implementing caching when using Rails 7 with Redis and ActionCable
I've looked through the documentation and I'm still confused about I'm working with a strange scenario with caching in my Rails 7 application when using Redis as my caching store alongside ActionCable. Specifically, I notice that sometimes my ActionCable subscriptions are not respecting cache expiration, leading to stale data being pushed to clients. I have this setup in my `cable.yml`: ```yaml production: adapter: redis url: redis://localhost:6379/1 channel_prefix: my_app_production ``` I also have caching enabled in my models using Rails.cache, for example: ```ruby class Post < ApplicationRecord def self.cached_recent Rails.cache.fetch('recent_posts', expires_in: 5.minutes) do order(created_at: :desc).limit(10).to_a end end end ``` When I call `Post.cached_recent` and then push updates through ActionCable, if I make changes to the posts, the updates get sent to clients, but the cached data doesn’t seem to reflect the new changes until after the cache expires. I've tried using `Rails.cache.delete('recent_posts')` in my ActionCable channel after updates, but it doesn't seem to have the desired effect. Here’s my ActionCable channel code: ```ruby class PostsChannel < ApplicationCable::Channel def subscribed stream_from 'posts_channel' end def update_post(data) post = Post.find(data['id']) post.update!(data) Rails.cache.delete('recent_posts') # Trying to delete the cache here ActionCable.server.broadcast('posts_channel', post) end end ``` I feel like I must be missing something in terms of caching strategy or the timing of cache deletion. Has anyone faced a similar scenario or can you suggest an effective way to ensure that the cached data is always up to date when using ActionCable? I've tried debugging the Redis cache directly, and the key seems to still exist even after I attempt to delete it. Any insights would be appreciated! Any help would be greatly appreciated! How would you solve this?