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News from the CYBERTEC PostgreSQL Blog
effective_cache_size: A practical example
A lot has been written about effective_cache_size in postgresql.conf and about PostgreSQL performance in general. However, few people know what this famous parameter really does. Let me share some more insights. What the PostgreSQL optimizer does The idea behind SQL is actually quite simple: The end user sends a query and the optimizer is supposed […]
What is fillfactor and how does it affect PostgreSQL performance?
Recently I was asked if there’s a rule of thumb / best practice for setting the fillfactor in Postgres – and the only answer I could give was to decrease it “a bit” if you’re doing lots and lots of updates on some table. Good advice? Well it could be better of course – this […]
PostgreSQL: More performance for LIKE and ILIKE statements
LIKE and ILIKE are two fundamental SQL features. People use those things all over the place in their application and therefore it makes sense to approach the topic from a performance point of view. What can PostgreSQL do to speed up those operations and what can be done in general to first understand the problem […]