Why does Rails cache expiration doesn't work?

Question

I'm trying to setup cache expiration time like this:

Rails.cache.write('trash', items, expires_in: 30.seconds) 

or like this

Rails.cache.read('trash', expires_in: 30.seconds) 

but nothing works in my case. The cache is not deleted/invalidated after the expiration time passes.

question from:https://stackoverflow.com/questions/66066438/why-does-rails-cache-expiration-doesnt-work

Answer 1

Low-level caching, which you are trying to do here, doesn't work with Memstore (yellow box), the default for development. You'll have to setup something like MemCached or Redis for development.