News for hackers. Stuff that matters.

A comment on Caching is an Abstraction, not an Optimization. Parent comment

Re:Caching is an Abstraction, not an Optimization by hmottestad on Thursday July 03, 2025 @06:01PM (#44459529)
Does SQS guarantee delivery to all clients? If it does then that’s doing a lot of heavy lifting for you.

If it doesn’t guarantee delivery, then I believe you will at some point have a client that reads a cached value thinking it’s still valid because the invalidation message got lost in the network.

[ Parent | on HN ]
Re:Caching is an Abstraction, not an Optimization by maccard on Thursday July 03, 2025 @06:54PM (#44459789)
Eventually. The problem is that eventually delivering that message will result in clients assuming that it will always be the same, when it’s not.
[ Parent | on HN ]