Hi,
This is a general question around this performance area rather
than a specific performance problem.....so I apologise now for a lack of a
specific detail.
We have an application that does many small actions on the DB -
and it's a small DB (a 50/100 Mbytes) so we would expect it to be contained in
memory. Accesses need to be low latency - unfortunately there are "serial"
accesses where the result of one access governs the next. Luckily the work to
be done by the DB is, we believe, very simple and hence fast. Everything is
running on one (large) server so we use UDS to connect the client to the server.
Out observation (suspicion) is that the latency of the access, as opposed to
the cost of the query, is high. Having done some investigation we believe the
UDS latency may be contributing AND the cost imposed by postgres in
"formatting" the messages between the client and server (transformation to
network format?).
We will try and get underneath this with real results/measurements but I would
appreciate any comments pointers on what we are doing and how/if we can
optimise this style of applications
Cheers
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