PGCluster

PGCluster 

• PGCluster is a multi-master, synchronous replication system based on PostgreSQL Database Server.
• Synchronous Replication System
• No delay occurs for data duplication between the Cluster DBs.
• Multi-master Cluster DB System
• There is no Cluster DBs preference for queries. A user can use any node for any type of query

• PGCluster has two functions
• A load balancing function
• A high availability function

• It has 3 kinds of servers
• Replication Server[s]
• Cluster Servers
• Load Balancing Server[s]

PGCluster – Versions

• PGCluster 1.9 is for PostgreSQL 8.3.
• Latest minor version: 1.9.0rc4, for PostgreSQL 8.3.0
• PGCluster 1.7 is for PostgreSQL 8.2.
• Latest minor version: 1.7.0rc11, for PostgreSQL 8.2.6
• PGCluster 1.5 is for PostgreSQL 8.1.
• Latest minor version: 1.5.0rc20, for PostgreSQL 8.1.11
• PGCluster 1.3 is for PostgreSQL 8.0.
• Latest minor version: 1.3.0rc10, for PostgreSQL 8.0.15
• PGCluster 1.1 is for PostgreSQL 7.4.
• Latest minor version: 1.1.2rc9, for PostgreSQL 7.4.19

PGCluster – Architecture

Replication in PostgreSQL