Nice! I haven't looked closely, but some initial questions/comments:
1. Are you ordering the jobs by any parameter? I don't see an ORDER BY in this clause: https://github.com/oneapplab/lq/blob/8c9f8af577f9e0112767eef...
2. I see you're using a UUID for the primary key on the jobs, I think you'd be better served by an auto-inc primary key (bigserial or identity columns in Postgres) which will be slightly more performant. This won't matter for small datasets.
3. I see you have an index on `queue`, which is good, but no index on the rest of the parameters in the processor query, which might be problematic when you have many reserved jobs.
4. Since this is an in-process queue, it would be awesome to allow the tx to be passed to the `Create` method here: https://github.com/oneapplab/lq/blob/8c9f8af577f9e0112767eef... -- so you can create the job in the same tx when you're performing a data write.
Thanks a lot for the review you did which was much more than i requested. i noted all the 4 comments you did to apply on the package. Thanks again. Also currently we have Laravel backend and Laravel + Redis + Horizon [0] + Supervisor as a queue runner for our production and it's working fine for us. but would be great to can access Hatchet from php as well which we might switch in future as well. Another thing since you mentioned handling large work load do you recommend Hatchet as kafka or Rabbit message queue alternative to microservice communications ?
[0] https://laravel.com/docs/12.x/horizon
I just want to say how cool it is to see you doing a non-trivial review of someone else’s thing here