Slides by Volodymyr Oliynyk about "PostgreSQL replication from setup to advanced features" during 11th #pivorak Lviv Ruby MeetUp in Lviv, Aprill 22nd.

1. PostgreSQL replication
Lviv, #pivorak, 22/04/16

2. PG vs. MySQL
● Indexes on Expressions
● Partial Indexes
● Combining Multiple
Indexes
● Index Types
● 50+ Data Types
● Pattern Matching
with RegExps
● Savepoints
● Different Auth
Providers

3. Terms
● Write Ahead Log (WAL)
● Streaming Replication (SR)
● Physical Log Streaming Replication (LLSR)
● Logical Log Streaming Replication (LLSR)
● Bi-Directional Replication (BDR)

4. Physical Log Streaming Replication
WAL
Master
Slave

5. Solutions
Program License Maturity Replication Method Sync Connection Pooling Load Balancing Query Partitioning
PgCluster BSD Stalled Master-Master Synchronous No Yes No
pgpool-I BSD Stable Statement-Based
Middleware
Synchronous Yes Yes No
Pgpool-II BSD Recent release Statement-Based
Middleware
Synchronous Yes Yes Yes
slony BSD Stable Master-Slave Asynchronous No No No
Bucardo BSD Stable Master-Master, Master-
Slave
Asynchronous No No No
Londiste BSD Stable Master-Slave Asynchronous No No No
Mammoth BSD Stalled Master-Slave Asynchronous No No No
rubyrep MIT Stalled Master-Master, Master-
Slave
Asynchronous No No No
BDR (Bi-Directional
Replication)
PostgreSQL (BSD) Stable Master-Master
(no triggers needed)
Asynchronous No No No
pg_shard LGPL Recent release Statement-based
Middleware (as an
extension)
Synchronous No Yes Yes
pglogical PostgreSQL Recent Release Master-Slave Asynchronous No No No
https://wiki.postgresql.org/wiki/Replication,_Clustering,_and_Connection_Pooling

6. Let’s practice
Browse to
vova.github.io/pivorak.md