[Twisted-Python] implementing an adbapi connectionpool idle timer
p.mayers at imperial.ac.uk
Sun Jun 10 08:04:58 EDT 2007
I'm using t.e.adbapi with psycopg against a Postgres 8 database. This
database is replicated using Slony-I and I'm hitting this problem:
Basically, holding open SQL connections for a long time causes postgres
to cache query plans; these cached plans need to be freed for Slony to
rollover its internal SQL replication log table.
So I'd like to add something to ConnectionPool to disconnect unused
connections after a certain time. Any suggestions how to start?
Also - looking at the ConnectionPool/Transaction code, it appears a
ConnectionPool's "connections" dictionary is modified from multiple
threads without locking. Is this safe?
More information about the Twisted-Python