Josh Berkus <j...@agliodbs.com> wrote: > In fact, most of the folks who would want an embedded PostgreSQL > either want no authentication at all, or only a single password. > So supporting authentication options other than trust or md5 is > not required, or desired AFAIK. I don't know whether it's worth the trouble of doing so, but serializable transactions could skip all the SSI predicate locking and conflict checking when in single-connection mode. With only one connection the transactions could never overlap, so there would be no chance of serialization anomalies when running snapshot isolation. The reason I wonder whether it is worth the trouble is that it would only really matter if someone had code they wanted to run under both normal and single-connection modes. For single-connection only, they could just choose REPEATABLE READ to get exactly the same semantics. -Kevin
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