[anelson]

We use localstack for as much of our integration tests as we can, and have multiple paid licenses. When we started using it I was skeptical that it could reliably mimic all the AWS services we use, and I was right. Don’t get me wrong it’s a valiant effort and it lets us run tests much faster (and obviously cheaper) than the real thing, but those same tests need to pass on live AWS too before we have any confidence in our code.

If any of the localstack authors are reading this, thank you for your tireless efforts!

[nhoughto]

Yeah we gave up when we got to using lambda. Even if the api works it can’t scale the same way!

[lytedev]

Well yeah. Isn't it intended for integration tests and similar usage and not for production "hyperscaling"?

[chii]

exactly - it is meant to approximately work as a localized AWS environment for use during development, and for writing "unit" tests, and basic integration tests.

A full on, end-to-end testing is still required, but with localstack, you can run those once after you've completed development.