[bgentry]

You can get pretty high job throughput while maintaining transactional integrity, but maybe not with Ruby and ActiveRecord :) https://riverqueue.com/docs/benchmarks

That River example has a MacBook Air doing about 2x the throughput as the Sidekiq benchmarks while still using Postgres via Go.

Can’t find any indication of whether those Sidekiq benchmarks used Postgres or MySQL/Maria, that may be a difference.

[karolist]

this is really cool and I'd love to use it, but it seems they only support workers written in Go if I'm not mistaken? My workers can be remote and not using Go, behind a NAT too. I want a them to periodically pull the queue, this way I do not need to worry about network topology. I guess I could simply interface with PG atomically via a simple API endpoint for the workers to connect, but I'd love to have the UI of riverqueue.

[shayonj]

very interesting and TIL about the project, thanks for sharing. What DB is River Queue for 46k jobs/sec (https://riverqueue.com/docs/benchmarks)

UPDATE: I see its PG - https://riverqueue.com/docs/transactional-enqueueing

[shayonj]

IIUC - Does this mean if I am making a network call, or performing some expensive task from within the job, the transaction against the database is held open for the duration of the job?

[bgentry]

Definitely not! Jobs in River are enqueued and fetched by worker clients transactionally, but the jobs themselves execute outside a transaction. I’m guessing you’re aware of the risks of holding open long transactions in Postgres, and we definitely didn’t want to limit users to short-lived background jobs.

There is a super handy transactional completion API that lets you put some or all of a job in a transaction if you want to. Works great for making other database side effects atomic with the job’s completion. https://riverqueue.com/docs/transactional-job-completion

[shayonj]

very nice! cool project