On Fri, Aug 8, 2014 at 11:58 AM, Fujii Masao <masao.fu...@gmail.com> wrote: > On Fri, Aug 8, 2014 at 9:50 AM, Craig Ringer <cr...@2ndquadrant.com> wrote: > ISTM that the proper solution to that problem is the introduction of > new synchronous replication mode which makes the transaction wait for > its WAL to be replayed by the standby. If this mode is used, a client > doesn't need to track the LSN of each transaction and check whether > the committed transaction has already replayed by the standby or not. Don't you need to combine that with the possibility to wait for N targets instead of 1 in synchronous_standby_names? You may want to be sure that the commit is done on a series of standbys before considering any further operations after this transaction commit. -- Michael
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