table locks - Mailing list pgsql-general

Hello!

I need table locks to provide application logic. Just very common lock types with very common behavior - Shared and
Exclusive. 

Which PostgreSQL's lock modes should be preferred in order to avoid conflicts with autovacuum and suchlike?

Or, may be, the best option for me is a contrib module?

Thanks a lot.

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Best regards
Ilja Golshtein