Messaging at Scale at Instagram 

great talk thank you!

Enjoyed this very much, thank you!

Great talk. Thanks!

i love this stuff!

No BS, to the point talk. Awesome.

Watch it just now, still awesome!❤

this is from 8 years ago. a lot has changed, in technology, business, etc. does insta still use Celery?

that's great :+1

How does he get rid of the SHIM?

15:37 this is not a good pattern you shouldn't call a task from another task that way. I would be better to create a workflow where check_url raises an error when spam is found and take_some_action is bound to the on_error task method of check_url. ex: # in the caller check_url.s(id, url).on_error(take_some_action.s(id, url)).delay()

5:29

9:30

Great talk, but still don't get what this chained task thing is ..

Is redis user ID list unbounded and ever increasing