alt.hn

4/16/2026 at 2:28:18 AM

Show HN: Hiraeth – AWS Emulator

https://github.com/SethPyle376/hiraeth

by ozarkerD

4/17/2026 at 3:48:49 PM

> the rest will soon follow

If you’re looking for requests ;-), I would love an ECS (and specifically Fargate) emulator that actually ran Docker containers locally as though they were in ECS

by michalc

4/19/2026 at 8:14:53 PM

That's a great idea i've had floating around in my head too!

by ozarkerD

4/16/2026 at 3:39:55 AM

What kind of things would you use this to simulate ?

Is this to make sure services are wired up with permission and communicate properly before you deploy or what is the use case ?

Also, why not have a dev environment where you can test things on the real thing (ideally with smaller size instances to save $)

by great_psy

4/16/2026 at 5:37:51 AM

Intergration testing is one. You can run this in your ci/locally to speed up tests. Or just for local dev. We do this with localstack[1]

[1] https://www.localstack.cloud/

by giza182

4/16/2026 at 1:00:55 PM

Yep integration is my use case as well. It’s nice to not have to worry about setting up real infrastructure for testing client code, parallel execution if you’re on a team, clearing out state each run, etc…

by ozarkerD

4/18/2026 at 10:03:41 PM

what compatibility surface is prioritized first for SQS edge cases

by MouadNos

4/19/2026 at 8:12:34 PM

Good question. I'm driving mostly off of my own use cases currently, so AWS SDK/CLI/Terraform compatibility. Response formats, codes, messages are best effort, there's a little work to be done there still. There's some gaps around request validation still too.

The idea is to build up a good suite of integration/regression tests as cases are identified by myself or the community (if there is one) through development.

by ozarkerD

4/18/2026 at 12:32:46 AM

Works perfectly.

by slava_vechir_2

4/19/2026 at 8:13:30 PM

Awesome, appreciate the feedback!

by ozarkerD

4/16/2026 at 3:32:38 AM

Looks cool! Now add (simulated) billing. ;)

by Carrok

4/19/2026 at 8:14:19 PM

Maybe a cost explorer emulator would be a fun april fools joke someday :D

by ozarkerD

4/16/2026 at 4:46:37 AM

Easy... $<INSERT_VERY_LARGE_RANDOM_NUMBER_HERE>

by ryanisnan