pgpool 1.0, yet another open source replication software for
PostgreSQL is now available at:
ftp://ftp.sra.co.jp/pub/cmd/postgres/pgpool/pgpool-1.0.tar.gz
pgpool is a single master/query based/synchronous replication
server. It acts as a proxy server between PostgreSQL client and
PostgreSQL server. No application change is needed to use pgpool.
pgpool's features include:
o connection pooling. This will reduce the connection establishing
overhead.
o pre-forking child processes. Like Apache, pgpool pre-forks child
processes to provide faster service startup.
o degeneration. In the replication mode, if one of PostgreSQL goes
down, it detaches the broken server and continues operation with the
surviving server.
o fail over. In the connection pool server mode, if master PostgreSQL
goes down, it detaches the broken server and continues operation
with the stand-by server.
pgpool can work with PostgreSQL 7.0 to 7.4. It's small and easy to
install. All you need is gcc. You even do not need PostgreSQL source
tree.
Enjoy,
--
Tatsuo Ishii