Various experiments with PostgreSQL clustering perfomed at PostgresPro.
This is a mirror of postgres repo with several changes to the core and a few extra extensions.
- Transaction manager interface (eXtensible Transaction Manager, xtm). Generic interface to plug distributed transaction engines. More info on postgres wiki and on the email thread.
- Distributed deadlock detection API.
- Logical decoding of transactions.
The following table describes the features and the way they are implemented in our four main extensions:
| commit timestamps | snapshot sharing | |
|---|---|---|
| distributed transactions | pg_tsdtm |
pg_dtm |
| multimaster replication | mmts |
multimaster |
An implementation of synchronous multi-master replication based on commit timestamps.
An implementation of synchronous multi-master replication based on snapshot sharing.
An implementation of distributed transaction management based on snapshot sharing.
An implementation of distributed transaction management based on commit timestamps.
A distributed transaction management daemon.
Used by pg_dtm and multimaster.
A key-value table replicated over Raft protocol.
Used by mmts.