PostgreSQL will be close enough to an in memory database if you turn off synchronous_commit. For most test ssuties I would suspect much more time will be spent plannign the queries (which can be improved with prepared staatments) than the time spent on disk IO if you just reduce the durability requirements of your test database.
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PostgreSQL will be close enough to an in memory database if you turn off synchronous_commit. For most test ssuties I would suspect much more time will be spent plannign the queries (which can be improved with prepared staatments) than the time spent on disk IO if you just reduce the durability requirements of your test database.