CN114785770A - Mirror layer file sending method and device, electronic equipment and computer readable medium - Google Patents

Abstract

Embodiments of the present disclosure disclose a method, an apparatus, an electronic device, and a computer-readable medium for sending an image layer file. A specific implementation of the method includes: in response to receiving a request for obtaining an image layer file sent by a client, determining whether there is an image layer file corresponding to the above-mentioned image layer file obtaining request in the cache of the above-mentioned mirror warehouse management end; There is no mirror layer file corresponding to the above-mentioned mirror-layer file acquisition request, obtain the mirror-layer file corresponding to the above-mentioned mirror-layer file acquisition request from the storage backend; store the above-mentioned mirror-layer file to the above-mentioned cache; Send the above-mentioned mirror-layer file to the above-mentioned client end. This implementation is related to cloud computing, which reduces the number of times that the image warehouse management end or the source storage end falls into an unavailable state, saves network bandwidth, and speeds up image acquisition.

Description

Image layer file sending method, apparatus, electronic device and computer readable medium

technical field

The embodiments of the present disclosure relate to the field of computer technologies, and in particular, to a method, apparatus, electronic device, and computer-readable medium for sending mirror layer files.

Background technique

With the development of cloud technology and PaaS (Platform as a Service) platform, users can obtain images through the image warehouse management terminal. At present, when the image warehouse management terminal is used to obtain the image, the method usually adopted is as follows: the image warehouse management terminal directly obtains the image from the source storage terminal where the image is stored.

However, when the mirror warehouse management terminal is used to obtain images in the above manner, there are often the following technical problems: when the mirror warehouse management terminal or the source storage terminal has a large number of concurrent accesses, the mirror warehouse management terminal or the source storage terminal falls into an unavailable state. There are many times, the bandwidth from the mirror warehouse management end to the corresponding clients or the mirror warehouse management end to the source storage end is occupied more times, and the number of concurrent accesses from the mirror warehouse management end is high, which leads to a higher download speed of a single image. slow.

SUMMARY OF THE INVENTION

This summary of the disclosure serves to introduce concepts in a simplified form that are described in detail in the detailed description that follows. The content section of this disclosure is not intended to identify key features or essential features of the claimed technical solution, nor is it intended to be used to limit the scope of the claimed technical solution.

Some embodiments of the present disclosure propose a method, an apparatus, an electronic device, and a computer-readable medium for sending an image layer file to solve the technical problems mentioned in the above background art section.

In a first aspect, some embodiments of the present disclosure provide a method for sending a mirror layer file, which is applied to a mirror warehouse management end. The method includes: in response to receiving a request for obtaining a mirror layer file sent by a client, determining the above mirror warehouse management Whether there is an image layer file corresponding to the above-mentioned mirror-layer file acquisition request in the cache of the terminal; in response to determining that there is no mirror-layer file corresponding to the above-mentioned mirror-layer file acquisition request in the above-mentioned cache, acquire from the storage backend the corresponding to the above-mentioned mirror layer file acquisition request. Mirror layer file; store the above mirror layer file to the above cache; send the above mirror layer file to the above client.

Optionally, the method further includes: in response to determining that there is a mirror layer file corresponding to the above-mentioned mirror layer file acquisition request in the above-mentioned cache, obtaining the mirror layer file corresponding to the above-mentioned mirror layer file acquisition request from the above-mentioned cache as the cache mirror layer file; The above cache image layer file is sent to the above client.

Optionally, the cache includes a distributed cache, and the storing the image layer file in the cache includes: storing the image layer file in the distributed cache.

Optionally, before determining whether there is a mirror layer file corresponding to the above-mentioned mirror layer file acquisition request in the cache of the above-mentioned mirror warehouse management terminal in response to receiving the mirror layer file acquisition request sent by the client, the method further includes: in response to receiving the request. To the mirror information acquisition request sent by the above-mentioned client, send at least one layer of file information of the mirror image corresponding to the above-mentioned mirror information acquisition request to the above-mentioned client, so that the above-mentioned client is based on the above-mentioned at least one layer of file information in each layer of file information An image layer file acquisition request corresponding to the above layer file information is generated.

Optionally, the above-mentioned determining whether there is an image layer file corresponding to the above-mentioned mirror layer file acquisition request in the cache of the above-mentioned mirror warehouse management terminal in response to receiving the mirror layer file acquisition request sent by the client includes: in response to a preset time period. Receive an image layer file acquisition request corresponding to the above-mentioned image layer file sent by at least one client respectively, and determine whether the above-mentioned image layer file exists in the above-mentioned cache; and the above-mentioned sending the above-mentioned image layer file to the above-mentioned client includes: The above-mentioned image layer files are respectively sent to each of the above-mentioned at least one client.

Optionally, the method further includes: in response to the current time meeting a preset cycle time condition, deleting from the cache mirror layer files whose storage duration is greater than or equal to a preset cycle duration, the preset cycle duration corresponding to the preset cycle time condition.

Optionally, the method further includes: in response to the remaining cache capacity of the cache being less than or equal to a preset cache capacity, deleting image layer files whose storage time is before a preset historical time from the cache.

Optionally, the method further includes: in response to receiving the image layer file pre-storage information sent by the storage backend, storing the image layer file included in the image-layer file pre-storage information in the cache.

In a second aspect, some embodiments of the present disclosure provide an apparatus for sending an image layer file, which is applied to an image warehouse management terminal. The apparatus includes: a determining unit configured to, in response to receiving a request for obtaining an image layer file sent by a client, Determine whether there is a mirror layer file corresponding to the above-mentioned mirror layer file acquisition request in the cache of the above-mentioned mirror warehouse management end; the acquiring unit is configured to respond to determining that there is no mirror layer file corresponding to the above-mentioned mirror layer file in the cache. The backend obtains the mirror layer file corresponding to the above-mentioned mirror layer file obtaining request; the storage unit is configured to store the above-mentioned mirror layer file to the above-mentioned cache; the sending unit is configured to send the above-mentioned mirror layer file to the above-mentioned client.

Optionally, the apparatus further includes: an image layer file acquiring unit and an image layer file sending unit. The image layer file obtaining unit is configured to, in response to determining that the image layer file corresponding to the image layer file obtaining request exists in the cache, obtain the image layer file corresponding to the image layer file obtaining request from the cache as the cache image layer file . The image layer file sending unit is configured to send the cache image layer file to the client.

Optionally, the above cache includes a distributed cache. The storage unit is further configured to: store the image layer file in the distributed cache.

Optionally, before the determining unit, the apparatus further includes: a layer file information sending unit, configured to, in response to receiving the mirror image information acquisition request sent by the above-mentioned client, send at least one layer file of the mirror image corresponding to the above-mentioned mirror information acquisition request. The information is sent to the above-mentioned client, so that the above-mentioned client generates a mirror layer file acquisition request corresponding to the above-mentioned layer file information according to each layer of file information in the above-mentioned at least one layer of file information.

Optionally, the determining unit is further configured to: in response to receiving, within a preset time period, a request for obtaining an image layer file corresponding to the above-mentioned image layer file sent by at least one client respectively, to determine whether the above-mentioned image layer exists in the above-mentioned cache. document. And the sending unit 504 may be further configured to: send the above image layer file to each of the above at least one client respectively.

Optionally, the device further includes: a first deletion unit configured to delete, from the cache, the mirror layer files whose storage duration is greater than or equal to the preset cycle duration in response to the current time meeting the preset cycle time condition, and the preset cycle duration Corresponding to the above preset cycle time conditions.

Optionally, the apparatus further includes: a second deletion unit configured to delete the mirror layer files whose storage time is before the preset historical time from the cache in response to the remaining cache capacity of the cache being less than or equal to the preset cache capacity.

Optionally, the apparatus further includes: an image layer file storage unit, configured to store the image layer file included in the image layer file pre-storage information in the cache in response to receiving the image layer file pre-storage information sent by the storage backend.

In a third aspect, some embodiments of the present disclosure provide an electronic device, comprising: one or more processors; a storage device on which one or more programs are stored, when one or more programs are stored by one or more The processor executes, causing one or more processors to implement the method described in any implementation manner of the above first aspect.

In a fourth aspect, some embodiments of the present disclosure provide a computer-readable medium on which a computer program is stored, wherein, when the program is executed by a processor, the method described in any implementation manner of the above-mentioned first aspect is implemented.

The above-mentioned embodiments of the present disclosure have the following beneficial effects: the method for sending mirror layer files according to some embodiments of the present disclosure reduces the number of times that the mirror warehouse management end or the source storage end falls into an unavailable state, saves network bandwidth, and speeds up Image acquisition speed. Specifically, the reason why the mirror warehouse management end or the source storage end is in an unavailable state more often, the network bandwidth is occupied more times, and the image acquisition speed is slow is: when the mirror warehouse management end or the source storage end When there are many concurrent visits, the mirror warehouse management end or the source storage end falls into an unavailable state more often, and the bandwidth from the mirror warehouse management end to the corresponding clients or the mirror warehouse management end to the source storage end is occupied more frequently. When the number of concurrent accesses on the management side of the mirror warehouse is large, the download speed of a single image is slow. Based on this, in the methods for sending mirror layer files according to some embodiments of the present disclosure, firstly, in response to receiving the mirror layer file acquisition request sent by the client, it is determined whether there is a cache corresponding to the above mirror layer file acquisition request in the cache of the above-mentioned mirror warehouse management end. Image layer file. In this way, it can be judged in advance whether the mirror layer file corresponding to the request for obtaining the mirror layer file is pre-cached in the cache of the mirror warehouse management end. Then, in response to determining that the image layer file corresponding to the image layer file obtaining request does not exist in the cache, obtain the image layer file corresponding to the image layer file obtaining request from the storage backend. Therefore, the mirror layer file can be obtained from the storage backend only when the mirror layer file corresponding to the request for obtaining the mirror layer file is not pre-cached in the cache of the mirror warehouse management end. Next, store the above-mentioned image layer file in the above-mentioned cache. Therefore, when the mirror layer file corresponding to the mirror layer file acquisition request is obtained and the mirror layer file is not cached in advance, the mirror layer file obtained from the storage backend can be added to the cache. Finally, the above image layer file is sent to the above client. Thus, the obtained image layer file can be returned to the client to respond to the client's request for obtaining the image layer file. It is also because the mirror layer file is not directly obtained from the storage backend after receiving the client's request for obtaining the mirror layer file, which can reduce the concurrent access from the mirror warehouse management end to the storage backend, which in turn can reduce the source storage end (storage backend) The number of times it was stuck in an unavailable state, saving network bandwidth. And because the mirror warehouse management end adds the mirror layer file obtained from the storage backend to the cache, when it receives the mirror layer file acquisition request corresponding to the mirror layer file again, it can directly read the mirror layer file from the cache of the mirror warehouse management end. The image layer file does not need to be obtained from the storage backend, which can speed up the speed of the client to obtain the image. At the same time, when the mirror warehouse management end receives multiple mirror layer file acquisition requests, if there is an mirror layer file corresponding to the mirror layer file acquisition request in the cache, it can be obtained from the storage backend without needing to obtain it from the storage backend, which saves the memory of the mirror warehouse management end. It reduces the number of times that the mirror warehouse management end falls into an unavailable state and saves network bandwidth. As a result, the number of times that the image warehouse management end or the source storage end falls into an unavailable state is reduced, network bandwidth is saved, and the image acquisition speed is accelerated.

Description of drawings

The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent when taken in conjunction with the accompanying drawings and with reference to the following detailed description. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements. It should be understood that the drawings are schematic and that elements and elements are not necessarily drawn to scale.

1 is a schematic diagram of an application scenario of a method for sending an image layer file according to some embodiments of the present disclosure;

2 is a flowchart of some embodiments of a method for sending an image layer file according to the present disclosure;

3 is a flowchart of other embodiments of the method for sending an image layer file according to the present disclosure;

FIG. 4 is a flowchart of still other embodiments of a method for sending an image layer file according to the present disclosure;

5 is a schematic structural diagram of some embodiments of an image layer file sending apparatus according to the present disclosure;

6 is a schematic structural diagram of an electronic device suitable for implementing some embodiments of the present disclosure.

Detailed ways

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided for a thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes, and are not intended to limit the protection scope of the present disclosure.

In addition, it should be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings. The embodiments of this disclosure and features of the embodiments may be combined with each other without conflict.

It should be noted that concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or interdependence.

It should be noted that the modifications of "a" and "a plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, they should be understood as "one or a plurality of". multiple".

The names of messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes, and are not intended to limit the scope of these messages or information.

The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

FIG. 1 is a schematic diagram of an application scenario of a method for sending an image layer file according to some embodiments of the present disclosure.

In the application scenario of FIG. 1 , first, the computing device 101 may, in response to receiving the image layer file obtaining request 103 sent by the client 102, determine whether there is a corresponding image layer file obtaining request in the cache 104 of the above-mentioned mirror warehouse management terminal 102 Mirror layer file 105 of 103 . Then, the computing device 101 may, in response to determining that the image layer file 105 corresponding to the image layer file obtaining request 103 does not exist in the cache 104, obtain the image layer file 105 corresponding to the image layer file obtaining request 103 from the storage backend 106. Secondly, the computing device 101 may store the above-mentioned image layer file 105 to the above-mentioned cache 104 . Finally, the computing device 101 may send the above-mentioned image layer file 105 to the above-mentioned client 102 .

It should be noted that the above computing device 101 may be hardware or software. When the computing device is hardware, it can be implemented as a distributed cluster composed of multiple servers or terminal devices, or can be implemented as a single server or a single terminal device. When a computing device is embodied as software, it may be installed in the hardware devices listed above. It can be implemented, for example, as multiple software or software modules for providing distributed services, or as a single software or software module. There is no specific limitation here.

It should be understood that the number of computing devices in FIG. 1 is merely illustrative. There may be any number of computing devices depending on implementation needs.

Continuing to refer to FIG. 2 , a flow 200 of some embodiments of a method for sending an image layer file according to the present disclosure is shown. The image layer file sending method, applied to the image warehouse management terminal, includes the following steps:

Step 201 , in response to receiving a request for obtaining an image layer file sent by a client, determine whether an image layer file corresponding to the image layer file obtaining request exists in the cache of the image warehouse management end.

In some embodiments, the execution body of the method for sending an image layer file (for example, the computing device 101 shown in FIG. 1 ) may, in response to receiving a request for obtaining an image layer file sent by a client, determine whether the above-mentioned cache of the image warehouse management end exists. The image layer file corresponding to the above image layer file acquisition request. Wherein, the above-mentioned mirror warehouse management terminal may be a management terminal for processing mirror-related requests of each client corresponding to a computer room. The corresponding relationship between the above-mentioned computer room and each of the above-mentioned clients may be that each of the above-mentioned clients may share the above-mentioned computer room. The above cache may include a local cache on the image repository management side. The above request for obtaining an image layer file may be a request for obtaining an image layer file, and may include an image layer file identifier. The image layer file identifier can uniquely identify the image layer file. The above image layer file may be a file corresponding to the image layer. In practice, the execution body may determine whether there is an image layer file whose image layer file identifier is the image layer file identifier included in the image layer file acquisition request in the local cache. Thus, it can be determined in advance whether the mirror layer file corresponding to the mirror layer file acquisition request is pre-cached.

In some optional implementations of some embodiments, the above-mentioned execution body may determine the above-mentioned cache in response to receiving, within a preset time period, at least one client, respectively, sending an image-layer file acquisition request corresponding to the above-mentioned image-layer file. Whether the above image layer file exists in the file. Here, the specific setting of the preset time period is not limited. In practice, the above-mentioned execution body can determine whether there is an image layer file identifier and the above-mentioned image layer in the local cache in response to receiving a request for obtaining an image layer file corresponding to the image layer file sent by at least one client respectively within a preset time period. The file identifies the same image layer file. Therefore, when multiple image layer file acquisition requests for acquiring the same image layer file are received within a preset time period, only one subsequent processing can be performed. It can be understood that the above-mentioned execution body can also determine whether the above-mentioned mirror-layer file exists in the cache in response to simultaneously receiving at least one request for obtaining the mirror-layer file corresponding to the mirror-layer file sent by at least one client at the same time. In this way, when a plurality of mirror layer file acquisition requests for acquiring the same mirror layer file are received at the same time, subsequent processing can be performed only once.

Step 202, in response to determining that the mirror layer file corresponding to the mirror layer file acquisition request does not exist in the cache, acquire the mirror layer file corresponding to the mirror layer file acquisition request from the storage backend.

In some embodiments, in response to determining that the image layer file corresponding to the image layer file obtaining request does not exist in the cache, the execution body may obtain the image layer file corresponding to the image layer file obtaining request from the storage backend. Wherein, the above storage backend may be a terminal that stores each image layer file to respond to the request of each image warehouse management terminal corresponding to each computer room to obtain the image layer file. In practice, the above-mentioned execution body may, in response to determining that there is no mirror-layer file in the local cache with the mirror-layer file identified as the mirror-layer file identifier included in the mirror-layer file acquisition request, send to the above-mentioned storage back-end for obtaining the above-mentioned mirror-layer file. request to obtain the above image layer files. Therefore, the mirror layer file can be obtained from the storage backend only when the mirror layer file corresponding to the request for obtaining the mirror layer file is not pre-cached.

Step 203, store the image layer file in the cache.

In some embodiments, the execution body may store the image layer file in the cache. In practice, the execution body may store the image layer file in the local cache. Therefore, when the mirror layer file corresponding to the mirror layer file acquisition request is obtained and the mirror layer file is not cached in advance, the mirror layer file obtained from the storage backend can be added to the cache.

Step 204, sending the image layer file to the client.

In some embodiments, the execution body may send the image layer file to the client. Thus, the obtained image layer file can be returned to the client to respond to the client's request for obtaining the image layer file.

Optionally, in response to determining that a mirror layer file corresponding to the above-mentioned mirror layer file acquisition request exists in the cache, the above-mentioned execution body may acquire the mirror layer file corresponding to the above-mentioned mirror layer file acquisition request from the cache as the cache mirror layer file. In practice, the above-mentioned execution body can read the above-mentioned mirror-layer file from the local cache as a cache image in response to determining that there is a mirror-layer file with the same mirror-layer file identifier as the mirror-layer file identification included in the above-mentioned mirror-layer file acquisition request in the local cache. layer file. Then, the above cache image layer file may be sent to the above client. Therefore, when the mirror layer file for the mirror layer file acquisition request exists in the cache, the mirror layer file read from the cache can be directly returned to the client to respond to the client's mirror layer file acquisition request.

Optionally, the above-mentioned execution body may send the above-mentioned image layer file to each of the above-mentioned at least one client respectively. In this way, when multiple requests for obtaining mirror layer files for obtaining the same mirror layer file are received within a preset time period, the mirror layer files are only obtained once from the storage backend, and the obtained mirror layer files are sent to each client.

Optionally, the above-mentioned execution body may delete, from the above-mentioned cache, mirror layer files whose storage duration is greater than or equal to a preset period of time in response to the current time meeting a preset cycle time condition, and the preset period of time corresponds to the preset period of time. condition. Wherein, the above-mentioned preset period time condition may be "the current time is a period with a preset duration as a period". For example, the preset time period may be one week. If the last time the image layer file in the cache was deleted was February 28, 2022 00:00:00. The current time is 00:00:00 on March 7, 2022, which meets the preset cycle time conditions. The above-mentioned preset period duration may be the same as the above-mentioned preset period, or may be different from the above-mentioned preset period. In this way, the image layer files in the cache can be deleted periodically to save the cache space.

Optionally, in response to the remaining cache capacity of the cache being less than or equal to a preset cache capacity, the execution body may delete image layer files whose storage time is before the preset historical time from the cache. The remaining cache capacity may be the size of the cache space available for storage in the cache. Here, the specific settings of the preset cache capacity and the preset historical time are not limited. Therefore, when the remaining cache capacity that can be cached is less than or equal to the preset cache capacity, the image layer file in the cache is deleted to save the cache space.

Optionally, the execution body may, in response to receiving the image layer file pre-storage information sent by the storage backend, store the image-layer file included in the image-layer file pre-storage information in the cache. The above-mentioned pre-stored information of the image layer file may be information indicating that the storage backend newly stores the image layer file, and may include the image layer file. Therefore, when the mirror layer file is newly stored in the storage backend, the mirror layer file can be pre-stored in the cache of the mirror warehouse management end.

The above-mentioned embodiments of the present disclosure have the following beneficial effects: the method for sending mirror layer files according to some embodiments of the present disclosure reduces the number of times that the mirror warehouse management end or the source storage end falls into an unavailable state, saves network bandwidth, and speeds up Image acquisition speed. Specifically, the reason why the mirror warehouse management end or the source storage end is in an unavailable state more often, the network bandwidth is occupied more times, and the image acquisition speed is slow is: when the mirror warehouse management end or the source storage end When there are many concurrent visits, the mirror warehouse management end or the source storage end falls into an unavailable state more often, and the bandwidth from the mirror warehouse management end to the corresponding clients or the mirror warehouse management end to the source storage end is occupied more frequently. When the number of concurrent accesses on the management side of the mirror warehouse is large, the download speed of a single image is slow. Based on this, in the methods for sending mirror layer files according to some embodiments of the present disclosure, firstly, in response to receiving the mirror layer file acquisition request sent by the client, it is determined whether there is a cache corresponding to the above mirror layer file acquisition request in the cache of the above-mentioned mirror warehouse management end. Image layer file. In this way, it can be judged in advance whether the mirror layer file corresponding to the request for obtaining the mirror layer file is pre-cached in the cache of the mirror warehouse management end. Then, in response to determining that the image layer file corresponding to the image layer file obtaining request does not exist in the cache, obtain the image layer file corresponding to the image layer file obtaining request from the storage backend. Therefore, the mirror layer file can be obtained from the storage backend only when the mirror layer file corresponding to the request for obtaining the mirror layer file is not pre-cached in the cache of the mirror warehouse management end. Next, store the above-mentioned image layer file in the above-mentioned cache. Therefore, when the mirror layer file corresponding to the mirror layer file acquisition request is obtained and the mirror layer file is not cached in advance, the mirror layer file obtained from the storage backend can be added to the cache. Finally, the above image layer file is sent to the above client. Thus, the obtained image layer file can be returned to the client to respond to the client's request for obtaining the image layer file. It is also because the mirror layer file is not directly obtained from the storage backend after receiving the client's request for obtaining the mirror layer file, which can reduce the concurrent access from the mirror warehouse management end to the storage backend, which in turn can reduce the source storage end (storage backend) The number of times it was stuck in an unavailable state, saving network bandwidth. And because the mirror warehouse management end adds the mirror layer file obtained from the storage backend to the cache, when it receives the mirror layer file acquisition request corresponding to the mirror layer file again, it can directly read the mirror layer file from the cache of the mirror warehouse management end. The image layer file does not need to be obtained from the storage backend, which can speed up the speed of the client to obtain the image. At the same time, when the mirror warehouse management end receives multiple mirror layer file acquisition requests, if there is an mirror layer file corresponding to the mirror layer file acquisition request in the cache, it can be obtained from the storage backend without needing to obtain it from the storage backend, which saves the memory of the mirror warehouse management end. It reduces the number of times that the mirror warehouse management end falls into an unavailable state and saves network bandwidth. As a result, the number of times that the image warehouse management end or the source storage end falls into an unavailable state is reduced, network bandwidth is saved, and the image acquisition speed is accelerated.

Referring further to FIG. 3 , it shows a process 300 of other embodiments of the method for sending an image layer file. The process 300 of the image layer file sending method, applied to the image warehouse management terminal, includes the following steps:

Step 301 , in response to receiving a request for obtaining an image layer file sent by a client, determine whether an image layer file corresponding to the image layer file obtaining request exists in the cache of the image warehouse management end.

In some embodiments, the execution body of the method for sending an image layer file (for example, the computing device 101 shown in FIG. 1 ) may, in response to receiving a request for obtaining an image layer file sent by a client, determine whether the above-mentioned cache of the image warehouse management end exists. The image layer file corresponding to the above image layer file acquisition request. Wherein, the above cache may also include a distributed cache. The above-mentioned distributed cache may be the distributed cache system of the above-mentioned mirror warehouse management end. In practice, the execution body may determine whether there is an image layer file whose image layer file identifier is the image layer file identifier included in the image layer file acquisition request in the distributed cache. In this way, it can be determined in advance whether the image layer file corresponding to the image layer file acquisition request is pre-added in the distributed cache.

Step 302, in response to determining that the mirror layer file corresponding to the mirror layer file acquisition request does not exist in the cache, acquire the mirror layer file corresponding to the mirror layer file acquisition request from the storage backend.

In some embodiments, in response to determining that the image layer file corresponding to the image layer file obtaining request does not exist in the cache, the execution body may obtain the image layer file corresponding to the image layer file obtaining request from the storage backend. In practice, in response to determining that the image layer file corresponding to the image layer file obtaining request does not exist in the distributed cache, the execution body may obtain the image layer file corresponding to the image layer file obtaining request from the storage backend. Therefore, the mirror layer file can be obtained from the storage backend only when the mirror layer file corresponding to the request for obtaining the mirror layer file is not pre-added in the distributed cache.

Step 303: Store the image layer file in the distributed cache.

In some embodiments, the above-mentioned execution body may store the above-mentioned image layer file in a distributed cache. Therefore, when the mirror layer file corresponding to the mirror layer file acquisition request is obtained and the mirror layer file is not pre-added in the distributed cache, the mirror layer file obtained from the storage backend can be added to the distributed cache.

Step 304, sending the image layer file to the client.

In some embodiments, for the specific implementation of step 304 and the technical effect brought about, reference may be made to step 204 in those embodiments corresponding to FIG. 2 , and details are not repeated here.

As can be seen from FIG. 3 , compared with the description of some embodiments corresponding to FIG. 2 , the process 300 of the method for sending mirror layer files in some embodiments corresponding to FIG. 3 embodies the steps of extending the distributed cache. Therefore, the solutions described in these embodiments can add the mirror layer file obtained from the storage backend to the distributed cache when the mirror layer file corresponding to the mirror layer file obtaining request is obtained. Furthermore, the image layer file read from the distributed cache can be directly returned to the client to respond to the client's request for obtaining the image layer file. Also, because the distributed cache has better data read and write performance in high concurrency scenarios, it can further reduce the number of times the mirror warehouse management end or source storage end falls into an unavailable state, save network bandwidth, and speed up image acquisition.

With further reference to FIG. 4 , a flow 400 of further embodiments of the method for sending an image layer file is shown. The process 400 of the image layer file sending method, applied to the image warehouse management terminal, includes the following steps:

Step 401 , in response to receiving a request for obtaining image information sent by the client, send at least one layer file information of the image corresponding to the request for obtaining image information to the client.

In some embodiments, the execution body of the image layer file sending method (for example, the computing device 101 shown in FIG. 1 ) may, in response to receiving the image information acquisition request sent by the client, send the image corresponding to the image information acquisition request above. The at least one layer file information is sent to the above-mentioned client, so that the above-mentioned client generates a mirror layer file acquisition request corresponding to the above-mentioned layer file information according to each layer file information in the above-mentioned at least one layer file information. The above-mentioned mirror information acquisition request may be a request for acquiring mirror-related information. The above-mentioned layer file information may be related information of the above-mentioned mirror image layer file, which may include but not limited to at least one of the following: an image layer file identifier and an image layer file name. The at least one layer file information may be layer file information of each image layer file corresponding to the image above. After receiving the above-mentioned at least one layer file information, the above-mentioned client may generate an image layer file acquisition request corresponding to each layer file information in the above-mentioned at least one layer file information. After that, the generated image layer file acquisition request may be sent to the above-mentioned execution body. In this way, the client can be made to generate an image layer file acquisition request according to pre-acquired layer file information of an image, so as to obtain an image layer file corresponding to the layer file information.

Step 402: In response to receiving the request for obtaining the image layer file sent by the client, determine whether there is an image layer file corresponding to the image layer file obtaining request in the cache of the image warehouse management end.

Step 403, in response to determining that the mirror layer file corresponding to the mirror layer file acquisition request does not exist in the cache, acquire the mirror layer file corresponding to the mirror layer file acquisition request from the storage backend.

Step 404, store the image layer file in the cache.

Step 405, sending the image layer file to the client.

In some embodiments, for the specific implementation of steps 402-405 and the technical effects brought about, reference may be made to steps 201-204 in those embodiments corresponding to FIG. 2, and details are not repeated here.

As can be seen from FIG. 4 , compared with the descriptions of some embodiments corresponding to FIG. 2 , the process 400 of the method for sending a mirror layer file in some embodiments corresponding to FIG. 4 embodies the steps of extending the sending layer file information. Therefore, the solutions described in these embodiments enable the client to generate an image layer file acquisition request according to pre-acquired layer file information of an image, so as to obtain an image layer file corresponding to the layer file information.

With further reference to FIG. 5 , as an implementation of the methods shown in the above figures, the present disclosure provides some embodiments of an apparatus for sending an image layer file. These apparatus embodiments correspond to those method embodiments shown in FIG. 2 . For the mirror warehouse management end, the device can be specifically applied to various electronic devices.

As shown in FIG. 5 , the apparatus 500 for sending an image layer file in some embodiments includes: a determining unit 501 , an obtaining unit 502 , a storage unit 503 and a sending unit 504 . Wherein, the determining unit 501 is configured to, in response to receiving the request for obtaining the mirror layer file sent by the client, determine whether there is an image layer file corresponding to the above-mentioned mirror layer file obtaining request in the cache of the above-mentioned mirror warehouse management end; the obtaining unit 502 is configured to In response to determining that the mirror layer file corresponding to the above-mentioned mirror layer file acquisition request does not exist in the above-mentioned cache, the mirror layer file corresponding to the above-mentioned mirror layer file acquisition request is obtained from the storage backend; the storage unit 503 is configured to store the above-mentioned mirror layer file to the above-mentioned mirror layer file. Cache; the sending unit 504 is configured to send the above-mentioned image layer file to the above-mentioned client.

Optionally, the apparatus 500 for sending an image layer file may further include: an image layer file acquiring unit and an image layer file sending unit (not shown in the figure). The image layer file obtaining unit is configured to, in response to determining that the image layer file corresponding to the image layer file obtaining request exists in the cache, obtain the image layer file corresponding to the image layer file obtaining request from the cache as the cache image layer file . The image layer file sending unit is configured to send the cache image layer file to the client.

Optionally, the above cache includes a distributed cache. The storage unit 503 may be further configured to: store the above-mentioned image layer file in the above-mentioned distributed cache.

Optionally, before the determining unit 501, the apparatus for sending mirror layer files 500 may further include: a layer file information sending unit (not shown in the figure), configured to respond to receiving the mirror information acquisition request sent by the above-mentioned client, Send at least one layer file information of the mirror image corresponding to the above-mentioned mirror information acquisition request to the above-mentioned client, so that the above-mentioned client generates the mirror layer file corresponding to the above-mentioned layer file information according to each layer file information in the above-mentioned at least one layer file information. ask.

Optionally, the determining unit 501 may be further configured to: in response to receiving, within a preset period of time, a request for obtaining an image layer file corresponding to the above-mentioned image layer file sent by at least one client respectively, determine whether the above-mentioned cache exists in the above-mentioned cache. Image layer file. And the sending unit 504 may be further configured to: send the above image layer file to each of the above at least one client respectively.

Optionally, the image layer file sending apparatus 500 may further include: a first deletion unit (not shown in the figure), configured to delete the storage duration from the above-mentioned cache in response to the current time meeting the preset cycle time condition, and the storage duration is greater than or equal to the preset period. Set the image layer file of the cycle duration, and the preset cycle duration corresponds to the preset cycle time condition.

Optionally, the image layer file sending apparatus 500 may further include: a second deletion unit (not shown in the figure), configured to delete the storage from the above-mentioned cache in response to the remaining buffer capacity of the above-mentioned cache being less than or equal to the preset buffer capacity. The image layer file whose time is before the preset historical time.

Optionally, the apparatus 500 for sending mirror layer files may further include: a mirror layer file storage unit (not shown in the figure), configured to store the above mirror layer files in response to receiving the mirror layer file pre-storage information sent by the above-mentioned storage backend. The image layer files included in the file pre-storage information are stored in the cache.

It can be understood that the units recorded in the apparatus 500 correspond to the respective steps in the method described with reference to FIG. 2 . Therefore, the operations, features and beneficial effects described above with respect to the method are also applicable to the apparatus 500 and the units included therein, and details are not described herein again.

Referring now to FIG. 6 , a schematic structural diagram of an electronic device (eg, computing device 101 in FIG. 1 ) 600 suitable for implementing some embodiments of the present disclosure is shown. The electronic device shown in FIG. 6 is only an example, and should not impose any limitation on the function and scope of use of the embodiments of the present disclosure.

As shown in FIG. 6, an electronic device 600 may include a processing device (eg, a central processing unit, a graphics processor, etc.) 601 that may be loaded into random access according to a program stored in a read only memory (ROM) 602 or from a storage device 608 Various appropriate actions and processes are executed by the programs in the memory (RAM) 603 . In the RAM 603, various programs and data necessary for the operation of the electronic device 600 are also stored. The processing device 601 , the ROM 602 , and the RAM 603 are connected to each other through a bus 604 . An input/output (I/O) interface 605 is also connected to bus 604 .

Typically, the following devices can be connected to the I/O interface 605: input devices 606 including, for example, a touch screen, touchpad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; including, for example, a liquid crystal display (LCD), speakers, vibration An output device 607 of a computer, etc.; a storage device 608 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 609. Communication means 609 may allow electronic device 600 to communicate wirelessly or by wire with other devices to exchange data. While FIG. 6 shows electronic device 600 having various means, it should be understood that not all of the illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided. Each block shown in FIG. 6 may represent one device, or may represent multiple devices as required.

In particular, according to some embodiments of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, some embodiments of the present disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the method illustrated in the flowchart. In some such embodiments, the computer program may be downloaded and installed from the network via the communication device 609 , or from the storage device 608 , or from the ROM 602 . When the computer program is executed by the processing device 601, the above-mentioned functions defined in the methods of some embodiments of the present disclosure are performed.

It should be noted that the computer-readable medium described in some embodiments of the present disclosure may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the above two. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above. More specific examples of computer readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable Programmable read only memory (EPROM or flash memory), fiber optics, portable compact disk read only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. In some embodiments of the present disclosure, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. Rather, in some embodiments of the present disclosure, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code therein. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device . Program code embodied on a computer readable medium may be transmitted using any suitable medium including, but not limited to, electrical wire, optical fiber cable, RF (radio frequency), etc., or any suitable combination of the foregoing.

In some embodiments, the client and server can communicate using any currently known or future developed network protocol such as HTTP (HyperText Transfer Protocol), and can communicate with digital data in any form or medium (eg, a communications network) interconnected. Examples of communication networks include local area networks ("LAN"), wide area networks ("WAN"), the Internet (eg, the Internet), and peer-to-peer networks (eg, ad hoc peer-to-peer networks), as well as any currently known or future development network of.

The above-mentioned computer-readable medium may be included in the above-mentioned electronic device; or may exist alone without being assembled into the electronic device. The above-mentioned computer-readable medium carries one or more programs, and when the above-mentioned one or more programs are executed by the electronic device, the electronic device: in response to receiving a request for obtaining an image layer file sent by a client, determine the above-mentioned mirror warehouse Whether there is an image layer file corresponding to the above-mentioned image layer file acquisition request in the cache of the management end; in response to determining that there is no image layer file corresponding to the above-mentioned image layer file acquisition request in the above-mentioned cache, obtain from the storage backend corresponding to the above-mentioned image layer file acquisition request The image layer file is stored; the image layer file is stored in the cache; the image layer file is sent to the client.

Computer program code for carrying out operations of some embodiments of the present disclosure may be written in one or more programming languages, including object-oriented programming languages—such as Java, Smalltalk, C++, or a combination thereof, Also included are conventional procedural programming languages - such as the "C" language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (eg, using an Internet service provider to via Internet connection).

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more logical functions for implementing the specified functions executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented in dedicated hardware-based systems that perform the specified functions or operations , or can be implemented in a combination of dedicated hardware and computer instructions.

The units described in some embodiments of the present disclosure may be implemented by means of software, and may also be implemented by means of hardware. The described unit may also be provided in the processor, for example, it may be described as: a processor includes a determination unit, an acquisition unit, a storage unit and a transmission unit. Wherein, the names of these units do not constitute a limitation on the unit itself under certain circumstances, for example, the determination unit may also be described as "in response to receiving the request for obtaining the image layer file sent by the client, determine the above-mentioned image warehouse management Whether there is a unit corresponding to the mirror layer file of the above-mentioned mirror layer file acquisition request in the cache of the client".

The functions described herein above may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), Systems on Chips (SOCs), Complex Programmable Logical Devices (CPLDs) and more.

The above descriptions are merely some preferred embodiments of the present disclosure and illustrations of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, and should also cover, without departing from the above-mentioned inventive concept, the above-mentioned Other technical solutions formed by any combination of technical features or their equivalent features. For example, a technical solution is formed by replacing the above-mentioned features with the technical features disclosed in the embodiments of the present disclosure (but not limited to) with similar functions.

Claims (11)

1. A method for sending mirror layer files, applied to a mirror warehouse management terminal, comprising: In response to receiving the mirror layer file acquisition request sent by the client, determine whether there is an mirror layer file corresponding to the mirror layer file acquisition request in the cache of the mirror warehouse management end; In response to determining that the mirror layer file corresponding to the mirror layer file acquisition request does not exist in the cache, acquire the mirror layer file corresponding to the mirror layer file acquisition request from the storage backend; storing the image layer file in the cache; Send the image layer file to the client. 2. The method of claim 1, wherein the method further comprises: In response to determining that an image layer file corresponding to the image layer file acquisition request exists in the cache, acquiring an image layer file corresponding to the image layer file acquisition request from the cache as a cache image layer file; Send the cache image layer file to the client. 3. The method of claim 2, wherein the cache comprises a distributed cache, The storing of the image layer file to the cache includes: storing the image layer file in the distributed cache. 4. The method according to claim 1, wherein, in the response to receiving the image layer file acquisition request sent by the client, it is determined whether there is a cache corresponding to the image layer file acquisition request in the cache of the image warehouse management end. Before the image layer file, the method further includes: In response to receiving the mirror image information acquisition request sent by the client, send at least one layer file information of the mirror image corresponding to the mirror information acquisition request to the client, so that the client can obtain the mirror image information according to the at least one layer file information. Each layer file information in the information generates an image layer file acquisition request corresponding to the layer file information. 5. The method according to claim 1, wherein, in response to receiving an image layer file acquisition request sent by a client, it is determined whether there is an image corresponding to the image layer file acquisition request in the cache of the image warehouse management end Layer files, including: In response to receiving within a preset period of time a request for obtaining an image layer file corresponding to the image layer file sent by at least one client respectively, determining whether the image layer file exists in the cache; and The sending the image layer file to the client includes: Send the image layer file to each of the at least one client respectively. 6. The method of one of claims 1-5, wherein the method further comprises: In response to the current time meeting a preset cycle time condition, delete from the cache mirror layer files whose storage duration is greater than or equal to a preset cycle duration, where the preset cycle duration corresponds to the preset cycle time condition. 7. The method of one of claims 1-5, wherein the method further comprises: In response to the remaining cache capacity of the cache being less than or equal to the preset cache capacity, delete the mirror layer files whose storage time is before the preset historical time from the cache. 8. The method of one of claims 1-5, wherein the method further comprises: In response to receiving the image layer file pre-storage information sent by the storage back end, the image layer file included in the image-layer file pre-storage information is stored in the cache. 9. A device for sending mirror layer files, applied to a mirror warehouse management terminal, comprising: a determining unit, configured to, in response to receiving the image layer file acquisition request sent by the client, determine whether there is an image layer file corresponding to the image layer file acquisition request in the cache of the image warehouse management end; an obtaining unit, configured to obtain, from the storage back-end, an image layer file corresponding to the image layer file obtaining request from the storage backend in response to determining that the image layer file corresponding to the image layer file obtaining request does not exist in the cache; a storage unit configured to store the image layer file to the cache; A sending unit, configured to send the image layer file to the client. 10. An electronic device comprising: one or more processors; a storage device on which one or more programs are stored, The one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of any one of claims 1-8. 11. A computer-readable medium having stored thereon a computer program, wherein the program, when executed by a processor, implements the method of any one of claims 1-8.

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