CN118714086A - Load balancing method, device, equipment and medium - Google Patents

Abstract

The embodiments of the present invention provide a load balancing method, apparatus, device and medium, which receive a service request sent by a client terminal; send the service request to a global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value; receive the address information of the target local load balancing server returned by the global load balancing server, and obtain the service data corresponding to the service request according to the address information of the target local load balancing server, so as to realize CDN sharing the pressure of the source station, avoid network congestion, ensure the acceleration of the distribution of website content in different regions and different scenarios, and improve the resource access speed.

Description

Load balancing method, device, equipment and medium

Technical Field

The present invention relates to the field of communication technology, and in particular to a load balancing method, device, equipment and medium.

Background Art

Nowadays, the Internet makes people's lives more and more convenient, and paying for knowledge has been recognized by more and more people. There are also many knowledge sharing platforms. These platforms have gathered user groups from all walks of life. Courses can be opened directly on these platforms. Online courses will be everywhere in the future. People need to watch courses on video websites. If a long video is played under poor network conditions, there will be a phenomenon of freeze, especially when switching the playback progress, which greatly affects the user experience. How to reduce video freezes and improve user experience is an urgent problem to be solved.

Summary of the invention

In view of the above problems, embodiments of the present invention are proposed to provide a load balancing method, apparatus, device and medium that overcome the above problems or at least partially solve the above problems.

In a first aspect, an embodiment of the present invention provides a load balancing method, the method comprising:

Receiving a service request sent by a client terminal;

Sending the service request to a global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value;

Receive the address information of the target local load balancing server returned by the global load balancing server, and acquire the service data corresponding to the service request according to the address information of the target local load balancing server.

Optionally, the method further comprises:

Determine whether the requested resource exists in the local load balancing server according to preset judgment conditions, wherein the preset judgment conditions include at least one or more of health, load or number of connections;

If the local load balancing server meets the preset judgment condition, the local load balancing server is determined to be the target local load balancing server.

Optionally, the local load balancing server includes at least sliced video data, and the sliced video data stores a first video header identifier in a first file header, and stores first video frame data in a first data file; or the sliced video data is obtained by encapsulating multiple streaming media data, and each of the streaming media data stores a second video header identifier in a second file header, and stores second video frame data in a second data file.

Optionally, the service request includes at least streaming media access information, and the streaming media access information includes at least a target index identifier.

Optionally, acquiring the service data corresponding to the service request according to the address information of the target local load balancing server includes:

According to the preset index file, the target segmented video data corresponding to the target index identifier is obtained.

In a second aspect, an embodiment of the present invention provides a load balancing device, which is applied to a local DNS, and the device includes:

A receiving module, used for receiving a service request sent by a client terminal;

A determination module, configured to send the service request to a global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value;

The processing module is used to receive the address information of the target local load balancing server returned by the global load balancing server, and obtain the service data corresponding to the service request according to the address information of the target local load balancing server.

Optionally, the determining module is used to:

Determine whether the requested resource exists in the local load balancing server according to preset judgment conditions, wherein the preset judgment conditions include at least one or more of health, load or number of connections;

If the local load balancing server meets the preset judgment condition, the local load balancing server is determined to be the target local load balancing server.

Optionally, the local load balancing server includes at least sliced video data, and the sliced video data stores a first video header identifier in a first file header, and stores first video frame data in a first data file; or the sliced video data is obtained by encapsulating multiple streaming media data, and each of the streaming media data stores a second video header identifier in a second file header, and stores second video frame data in a second data file.

Optionally, the service request includes at least streaming media access information, and the streaming media access information includes at least a target index identifier.

Optionally, the processing module is used to:

According to the preset index file, the target segmented video data corresponding to the target index identifier is obtained.

In a third aspect, an embodiment of the present invention provides a terminal device, including: at least one processor and a memory;

The memory stores a computer program; and at least one processor executes the computer program stored in the memory to implement the load balancing method provided in the first aspect.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed, the load balancing method provided in the first aspect is implemented.

The embodiments of the present invention include the following advantages:

The load balancing method, apparatus, device and medium provided by the embodiments of the present invention receive a service request sent by a client terminal; send the service request to a global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value; receive the address information of the target local load balancing server returned by the global load balancing server, and obtain the service data corresponding to the service request according to the address information of the target local load balancing server, so as to realize CDN sharing the pressure of the source station, avoid network congestion, ensure the acceleration of the distribution of website content in different regions and different scenarios, and improve the resource access speed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a flow chart of steps of an embodiment of a load balancing method of the present invention;

FIG2 is a schematic diagram of the data access process before using CDN;

FIG3 is a process diagram of request response through CDN of the present invention;

FIG4 is a schematic diagram of a video segmentation process according to the present invention;

FIG5 is a schematic diagram of a video segment playback process of the present invention;

FIG6 is a schematic diagram of another video segment playback process of the present invention;

FIG7 is a schematic diagram of another video segmentation process of the present invention;

FIG8 is a structural block diagram of an embodiment of a load balancing device of the present invention;

FIG. 9 is a schematic diagram of the structure of a terminal device of the present invention.

DETAILED DESCRIPTION

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

An embodiment of the present invention provides a load balancing method for performing balancing processing on client terminals. The execution subject of this embodiment is a load balancing device, which is arranged on a terminal device, wherein the terminal device at least includes a computer and the like.

1, a flow chart of a load balancing method embodiment of the present invention is shown. The method may specifically include the following steps:

S101, the local DNS server receives a service request sent by a client terminal;

S102, sending the service request to the global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value;

The local DNS server sends the service request to the global load balancing server GSLB. The global load balancing server determines the location of the client terminal based on the address information of the local DNS, and then determines the local load balancing server whose distance from the client terminal is less than the preset value.

S103: Receive the address information of the target local load balancing server returned by the global load balancing server, and obtain the service data corresponding to the service request according to the address information of the target local load balancing server.

The local DNS server receives the address information of the target local load balancing server returned by the global load balancing server, and obtains the business data corresponding to the business request based on the address information of the target local load balancing server. For example, the fragmented video data can be obtained from the target local load balancing server. The embodiment of the present application is based on CDN and video fragmentation technology, which will solve the problem of traffic control during multi-user access, and establish and cover a distributed network composed of edge node server groups distributed in different regions on the bearer network. CDN shares the pressure of the source station, avoids network congestion, ensures the acceleration of the distribution of website content in different regions and different scenarios, and improves the speed of resource access. CDN and video fragmentation share the pressure of the source station, avoid network congestion, ensure the acceleration of the distribution of website content in different regions and different scenarios, and improve the speed of resource access.

The load balancing method provided by the embodiment of the present invention receives a service request sent by a client terminal; sends the service request to a global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value; receives the address information of the target local load balancing server returned by the global load balancing server, and obtains the service data corresponding to the service request according to the address information of the target local load balancing server, so as to realize CDN sharing the pressure of the source station, avoid network congestion, ensure the acceleration of the distribution of website content in different regions and different scenarios, and improve the resource access speed.

Another embodiment of the present invention further supplements the load balancing method provided in the above embodiment.

Optionally, the method further comprises:

According to preset judgment conditions, judging whether the requested resource exists in the local load balancing server, the preset judgment conditions at least including one or more of health, load or number of connections;

If the local load balancing server meets the preset judgment condition, the local load balancing server is determined as the target local load balancing server.

CDN (Content Delivery Network) publishes the content of the source site to the "edge" of the network close to the user, so that the user can obtain the required data nearby, such as static resources css, js, etc. requested by the client terminal. This not only reduces network congestion and improves the response speed of requests, but also reduces the load pressure on the source site.

As shown in Figure 2, if the website to be accessed is called "baidu.com", the client will first look for the IP address corresponding to the domain name in the local hosts file and hosts cache; if the local host does not have this information, it will query the local DNS for the IP address corresponding to the domain name; if the local DNS still does not have the IP information of the domain name, the local DNS will query the root DNS, top-level domain DNS, and authoritative DNS in turn, and finally the local DNS will send the IP address to the client. The client sends an HTTP request to the remote source server through the IP address and obtains the corresponding data content.

As shown in Figure 3, it is a process diagram of request response through CDN. GSLB is a global load balancing system, which mainly performs load balancing distribution for traffic across regions and computer rooms; SLB is a local load balancing system, which mainly performs load balancing distribution for servers in the same region and computer room. As can be seen from the figure, a global load balancing system (GSLB) is added when DNS resolves the domain name. The main function of GSLB is to determine the user's location based on the IP address of the user's local DNS, select the local load balancing system (SLB) closest to the user, and return the IP address of the SLB as the result to the local DNS. SLB is mainly responsible for determining whether the cache server cluster contains the resource data requested by the user. If the requested resource exists in the cache server, the optimal cache node is selected based on the health, load, number of connections and other factors of the nodes in the cache server cluster, and the HTTP request is redirected to the optimal cache node. In general, GSLB and SLB are both important load balancing technologies in the application system. GSLB solves the load balancing problem across regions and computer rooms, and SLB solves the load balancing problem within the same computer room. The two are usually used in combination to jointly ensure the high availability and high performance of the application system.

Optionally, the local load balancing server includes at least sliced video data, the sliced video data is obtained by storing a first video header identifier in a first file header, and storing the first video frame data in a first data file; or the sliced video data is obtained by encapsulating multiple streaming media data, each streaming media data is obtained by storing a second video header identifier in a second file header, and storing the second video frame data in a second data file.

Optionally, the service request at least includes streaming media access information, and the streaming media access information at least includes a target index identifier.

Optionally, obtaining service data corresponding to the service request according to the address information of the target local load balancing server includes:

According to the preset index file, the target segmented video data corresponding to the target index identifier is obtained.

As shown in Figure 4 to Figure 6, one M3U8 file corresponds to multiple ts files, so that each time the corresponding segment is switched to, only the corresponding segment is loaded, which truly achieves the goal of increasing revenue and reducing expenditure. In addition, the ability of CDN to allocate resources nearby greatly reduces the source pressure of the website and improves the speed of resource access.

For video format parsing, M3U8 is encoded in UTF-8. Both "M3U" and "M3U8" files are based on the HTTP LiveStreaming (HLS) protocol format; it is the Unicode version of M3U. M3U8 files are a type of M3U file, but its encoding format is UTF-8. M3U is encoded using the Latin-1 character set. The full name of M3U is Moving Picture Experts Group Audio Layer 3 Uniform Resource Locator, which is mp3 URL. M3U is a plain text file; so the UTF-8 encoded M3U file is also referred to as M3U8; HLS is a streaming network transmission protocol based on HTTP. The working principle of HLS is to divide the entire stream into small HTTP-based files for download, and only download some at a time. When the media stream is playing, the client can choose to download the same resource at different rates from many different alternative sources, allowing the streaming session to adapt to different data rates. When starting a streaming session, the client downloads an extended M3U (m3u8) playlist file containing metadata to find available media streams. HLS only requests basic HTTP messages. Unlike the Real-time Transport Protocol (RTP), HLS can pass through any firewall or proxy server that allows HTTP data to pass. It is also easy to use a content distribution network to transmit media streams. This is a major advantage of HLS in live broadcasting. This project requires the use of an HLS format player to receive video segments distributed by CDN.

Process the video segments, use FFMPEG to segment the video, and upload the segments to the CDN server in batches. MP4 is just a packaging format. MP4 can exist in two ways. One is to put all the Meta in the file header, and all the media data behind it is a whole. Although this can achieve buffering and playback after streaming, due to the large size of MP4 Meta, there may be a long buffering time before playback (especially when the video is very long).

The other is to encapsulate multiple segments of media data in an MP4, and each segment of media data has its own independent Meta, so that the effect of progressive download + fast buffering can be achieved. HLS is generally not used for on-demand services. Because m3u8 is just an index file, after the user requests to call m3u8, the streaming media server will continue to request the physical TS file from the storage, resulting in too frequent requests, which puts a lot of pressure on the storage and cannot enable the streaming media server to achieve large-scale concurrent support. Almost all video websites use MP4 fragmentation for on-demand services because the streaming media server does not need to frequently request data from the storage, and can only call it once, and can even cache it to the front-end Transfer or local hard disk. This is much more efficient than using HLS (HTTP Live streaming, a streaming media transmission protocol based on HTTP) to achieve on-demand. For video fragmentation technology, it is processed through Alibaba Cloud OSS file upload (fragment upload).

As shown in Figure 7, the user uploads the video to the CDN server of OSS through the client, and the CDN synchronizes the MP4 file to the ES server (for video segmentation processing). The CDN uses the content distribution network to achieve website load balancing, and combines the video segmentation technology to control the flow and relieve the pressure on the website. CDN load balancing belongs to the Alibaba Cloud CDN server to distribute resources nearby and handle load balancing problems. The CDN system can redirect the user's request to the service node closest to the user in real time based on comprehensive information such as network traffic and the connection and load status of each node, as well as the distance to the user and response time. At the same time, video segmentation handles the problem of slow video loading, reduces the website traffic cost, and relieves the problem of website pressure. The purpose of combining the two is to enable users to obtain the required content nearby, solve the congestion of the Internet network, and improve the response speed of users visiting the website. The use of CDN for distribution in the embodiment of the present application will provide users with a good video browsing experience.

It should be noted that, for the sake of simplicity, the method embodiments are described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present invention are not limited by the described action sequence, because according to the embodiments of the present invention, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

The load balancing method provided by the embodiment of the present invention receives a service request sent by a client terminal; sends the service request to a global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value; receives the address information of the target local load balancing server returned by the global load balancing server, and obtains the service data corresponding to the service request according to the address information of the target local load balancing server, so as to realize CDN sharing the pressure of the source station, avoid network congestion, ensure the acceleration of the distribution of website content in different regions and different scenarios, and improve the resource access speed.

Another embodiment of the present invention provides a load balancing device, which is applied to a local DNS and is used to execute the load balancing method provided in the above embodiment.

8, a structural block diagram of an embodiment of a load balancing device of the present invention is shown. The device may specifically include the following modules: a receiving module 801, a determining module 802 and a processing module 803, wherein:

The receiving module 801 is used to receive a service request sent by a client terminal;

The determination module 802 is used to send the service request to the global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value;

The processing module 803 is used to receive the address information of the target local load balancing server returned by the global load balancing server, and obtain the service data corresponding to the service request according to the address information of the target local load balancing server.

The load balancing device provided by the embodiment of the present invention receives a service request sent by a client terminal; sends the service request to a global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value; receives the address information of the target local load balancing server returned by the global load balancing server, and obtains the service data corresponding to the service request according to the address information of the target local load balancing server, so as to realize CDN sharing the pressure of the source station, avoid network congestion, ensure the acceleration of the distribution of website content in different regions and different scenarios, and improve the resource access speed.

Another embodiment of the present invention further supplements the load balancing device provided in the above embodiment.

Optionally, the determination module is used to:

According to preset judgment conditions, judging whether the requested resource exists in the local load balancing server, the preset judgment conditions at least including one or more of health, load or number of connections;

If the local load balancing server meets the preset judgment condition, the local load balancing server is determined as the target local load balancing server.

Optionally, the local load balancing server includes at least sliced video data, the sliced video data is obtained by storing a first video header identifier in a first file header, and storing the first video frame data in a first data file; or the sliced video data is obtained by encapsulating multiple streaming media data, each streaming media data is obtained by storing a second video header identifier in a second file header, and storing the second video frame data in a second data file.

Optionally, the service request at least includes streaming media access information, and the streaming media access information at least includes a target index identifier.

Optionally, the processing module is used to:

According to the preset index file, the target segmented video data corresponding to the target index identifier is obtained.

It should be noted that each implementable method in this embodiment may be implemented separately, or may be implemented in combination in any manner without conflict, and this application is not limited thereto.

As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

The load balancing device provided by the embodiment of the present invention receives a service request sent by a client terminal; sends the service request to a global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value; receives the address information of the target local load balancing server returned by the global load balancing server, and obtains the service data corresponding to the service request according to the address information of the target local load balancing server, so as to realize CDN sharing the pressure of the source station, avoid network congestion, ensure the acceleration of the distribution of website content in different regions and different scenarios, and improve the resource access speed.

Yet another embodiment of the present invention provides a terminal device for executing the load balancing method provided in the above embodiment.

FIG9 is a schematic diagram of the structure of a terminal device of the present invention. As shown in FIG9 , the terminal device includes: at least one processor 901 and a memory 902;

The memory stores a computer program; and at least one processor executes the computer program stored in the memory to implement the load balancing method provided in the above embodiment.

The terminal device provided in this embodiment receives a service request sent by a client terminal; sends the service request to a global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value; receives the address information of the target local load balancing server returned by the global load balancing server, and obtains the service data corresponding to the service request according to the address information of the target local load balancing server, thereby realizing CDN sharing the pressure of the source station, avoiding network congestion, ensuring the acceleration of the distribution of website content in different regions and different scenarios, and improving the speed of resource access.

Yet another embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed, the load balancing method provided in any of the above embodiments is implemented.

According to the computer-readable storage medium of this embodiment, a service request sent by a client terminal is received; the service request is sent to a global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value; the address information of the target local load balancing server returned by the global load balancing server is received, and the service data corresponding to the service request is obtained according to the address information of the target local load balancing server, so as to realize CDN sharing the pressure of the source station, avoid network congestion, ensure the acceleration of the distribution of website content in different regions and different scenarios, and improve the speed of resource access.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

Those skilled in the art will appreciate that the embodiments of the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

The embodiments of the present invention are described with reference to the flowcharts and/or block diagrams of the methods, electronic devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and/or box in the flowchart and/or block diagram, as well as the combination of the processes and/or boxes in the flowchart and/or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing electronic device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing electronic device produce a device for implementing the functions specified in one process or multiple processes in the flowchart and/or one box or multiple boxes in the block diagram.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing electronic device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

These computer program instructions may also be loaded onto a computer or other programmable data processing electronic device so that a series of operating steps are executed on the computer or other programmable electronic device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable electronic device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or electronic device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or electronic device. In the absence of further restrictions, the elements defined by the sentence "comprises a..." do not exclude the presence of other identical elements in the process, method, article or electronic device including the elements.

The load balancing method and the load balancing device provided by the present invention are introduced in detail above. The principles and implementation methods of the present invention are explained in this article by using specific examples. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims (10)

1. A load balancing method, characterized in that it is applied to a local DNS, the method comprising: Receiving a service request sent by a client terminal; Sending the service request to a global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value; Receive the address information of the target local load balancing server returned by the global load balancing server, and acquire the service data corresponding to the service request according to the address information of the target local load balancing server. 2. The method according to claim 1, characterized in that the method further comprises: Determine whether the requested resource exists in the local load balancing server according to preset judgment conditions, wherein the preset judgment conditions include at least one or more of health, load or number of connections; If the local load balancing server meets the preset judgment condition, the local load balancing server is determined to be the target local load balancing server. 3. The method according to claim 1 is characterized in that the local load balancing server includes at least sliced video data, and the sliced video data stores a first video header identifier in a first file header, and stores the first video frame data in a first data file; or the sliced video data is obtained by encapsulating multiple streaming media data, and each of the streaming media data stores a second video header identifier in a second file header, and stores the second video frame data in a second data file. 4 . The method according to claim 3 , wherein the service request at least includes streaming media access information, and the streaming media access information at least includes a target index identifier. 5. The method according to claim 4, characterized in that the acquiring of the service data corresponding to the service request according to the address information of the target local load balancing server comprises: According to the preset index file, the target segmented video data corresponding to the target index identifier is obtained. 6. A load balancing device, characterized in that it is applied to a local DNS, and the device comprises: A receiving module, used for receiving a service request sent by a client terminal; A determination module, configured to send the service request to a global load balancing server, so that the global load balancing server determines the location of the client terminal according to the address information of the local DNS, and determines the address information of the target local load balancing server, wherein the distance between the local load balancing server and the client terminal is less than a preset value; The processing module is used to receive the address information of the target local load balancing server returned by the global load balancing server, and obtain the service data corresponding to the service request according to the address information of the target local load balancing server. 7. The device according to claim 6, wherein the determining module is used to: Determine whether the requested resource exists in the local load balancing server according to preset judgment conditions, wherein the preset judgment conditions include at least one or more of health, load or number of connections; If the local load balancing server meets the preset judgment condition, the local load balancing server is determined to be the target local load balancing server. 8. The device according to claim 6 is characterized in that the local load balancing server includes at least sliced video data, and the sliced video data stores a first video header identifier in a first file header, and stores the first video frame data in a first data file; or the sliced video data is obtained by encapsulating multiple streaming media data, and each of the streaming media data stores a second video header identifier in a second file header, and stores the second video frame data in a second data file. 9. A terminal device, comprising: at least one processor and a memory; The memory stores a computer program; and the at least one processor executes the computer program stored in the memory to implement the load balancing method according to any one of claims 1 to 5. 10. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the load balancing method according to any one of claims 1 to 5 is implemented.