zlacker

Temporal, which AFAIK was made by the Uber Cadence team, which was also involved in SQS, uses postgres as a backend.

I used it for a web automation system for an accounting client (automatically read files from a network share, lookup the clients on a database, submit the documents to government websites, using headless browsers, and put the resulting files in the directory). It allows for completely effortless deterministic programs that call workers that run the non deterministic code, with built in configurable retries (react to certain exception type, exponential back off) so you can write code that works almost like there were no issues with api connections, filesystem, etc.

This code has been running for 5 or more years, with barely any maintenance, with 0 issues so far. It keeps everything in postgres, so even full reboots and crashes have no impact, it will just move the work back to the queue and it will run when there's an available worker.

>>tiagod+(OP)
Temporal is a pretty complicated system. It has sharding built in, stores the entire activity history and runs multiple queues for timers and events. I’m a big fan (worked at Uber) but it’s definitely not just postgres with a few indices.