Use READ_COMMITTED transaction isolation #34
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We've found under heavy load we're getting some queries (16 in 30,000) leaving rogue rows hanging around in some of our resource's join tables. We're moving up one transaction isolation level to see if that fixes our race conditions. I've also wrapped the delete function in a transaction - we're not using that functionality in production so it's not the source of our issue however the test suite wouldn't pass without it.