Hi

We have noticed when using pua module with db_mode set to 1 the lock type defaults to DB_LOCKING_WRITE which locks the whole table and can cause performance issues.

I noticed this fix for the presence module last year specifically on this issue:
http://lists.kamailio.net/pipermail/sr-dev/2014-January/022820.html

I've attached an almost identical patch for pua I want to commit.  The patch makes this a configurable parameter that defaults to DB_LOCKING_WRIT.

If no one raises any concerns I will go ahead and commit.

Regards
Richard.

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