Sure, there are often problems differing between the databses. Our Travis CI configuration runs our test suite against all three different databases: https://tr

Sure, there are often problems differing between the databses. Our Travis CI configuration runs our test suite against all three different databases: https://travis-ci.org/pretix/pretix/builds/351704035 https://travis-ci.org/pretix/pretix/builds/351704035 However, having SQLite at hand for local development/testing makes things easier. In my experience, real-world concurrency issues (that you are talking about) are always hard to find in manual/automated testing, or do you have a good strategy of trying that?