`RedisCacheStore#delete_matched` doesn't play well with local cache

[ojab]

Steps to reproduce

# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  gem "rails", github: "rails/rails"
  gem 'redis'
end

require "active_support"
require "active_support/core_ext/object/blank"
require "minitest/autorun"

class BugTest < Minitest::Test
  def test_with_local_cache
    client = ActiveSupport::Cache::RedisCacheStore.new

    client.with_local_cache do
      client.write('my_key#123', 'xxx')
      client.delete_matched('my_key#*')

      # Passes
      assert client.send(:bypass_local_cache) { client.read('my_key#123') }.nil?

      # Fails
      assert client.read('my_key#123').nil?
    end
  end
end

Expected behavior

Test should pass or at least rails should provide a way to handle that case without hacky #send(:bypass_cache) { }

Actual behavior

Test fails, we're reading stale value from local cache.

System configuration

Rails version: 6 & master

Ruby version: 2.7

[eugeneius]

Thanks for the clear test case, this does look like a bug 👍 Are you interested in working on a fix?

[ojab]

Not sure if it's correct fix, but I gave it a stab in #38630

[rails-bot]

This issue has been automatically marked as stale because it has not been commented on for at least three months.
The resources of the Rails team are limited, and so we are asking for your help.
If you can still reproduce this error on the 6-0-stable branch or on master, please reply with all of the information you have about it in order to keep the issue open.
Thank you for all your contributions.