Toshihiro, > pgpool determines whether to load-balance or not in the first sentence of > multi-statement. So if "BEGIN" is the first sentence of multi-statement, > pgpool can not load-balance it. > > For example, pgpool can load-balance the request if it's the following case: > > BEGIN; > SELECT ...; SELECT ...; SELECT ...; > COMMIT; > > pgpool-II 3.0 or later(Master/Slave mode) load-balances queries in > explicit transactions without special setting. > > However, note that multi-statement must not include write-queries. > And, each "SELECT" query is sent to the same backend node, > because pgpool decides a load balancing node in every session.
Well, we're using 3.0.4, and the application controls read-only vs. read-write pretty well. So I feel confident that I can make the transactions operate correctly. You're saying this will just work on 3.0.4? -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com _______________________________________________ Pgpool-general mailing list [email protected] http://pgfoundry.org/mailman/listinfo/pgpool-general
