I have a small caching subsystem in my app, which works more or less as following:
- I have a collection of objects with attached resources identified by an ID
- Whenever I want an actor for an object with a given ID I look up this ID in registry
- If the ID does not exist I create a process and register it under that ID
- That process on initialization fetches relevant data from DB and various other places
- That process serves requests for the next 10 minutes
- Once the process has not been requested for the next 10 minutes it persists its’ data and shuts down
Everything works quite well in this setup except for a weird feeling that the way I create a process doesn’t feel “right” - even though I’m not very experienced in Elixir it feels like the way I’m doing it is very unidiomatic and screams of code smell.
My code is basically as follows: try to send a message to that actor and wrap that in a try-catch block. If sending a message doesn’t succeed, create that actor and then send a message again.
I feel like it must be a pretty common problem so there must be a better solution to this problem.
