Fwd: A suggestion or a problem

Dave Cramer

---------- Forwarded message ----------
From: fenglu(at)highgo(dot)com <fenglu(at)highgo(dot)com>
Date: 30 August 2017 at 23:41
Subject: A suggestion or a problem
To: pgsql-jdbc-owner <pgsql-jdbc-owner(at)postgresql(dot)org>

Hi,
I have a problem when I learned about PGJDBC's source code.
When I closed a preparedStatement,PGJDBC driver will put the
preparedQuery in the statementCache.When I perform the SQL again, the cache
will remove it, and then if I don't have to perform the
preparedStatement.close(), but the third time to perform the SQL, is it
need to compile again leading to reduced performance?
Why not choose to set the cache to the LinkedHashMao type and set
the maximum number ,use cache.get(key) and remove the least amount
according to the SQL usage when the cache reaches its maximum value?

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