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How can I clear rails action cache without restarting the server?

I have a script that updates the Postgres database with new data. I'd like to clear all cached pages after the script completes. but I can't seem to get this to take effect without completely restarting the Heroku server

I have tried without success:

• Rails.cache.clear
=> ["/app/tmp/cache/bootsnap-compile-cache", "/app/tmp/cache/bootsnap-load-path-cache"]


• rails tmp:cache:clear


• rails assets:clean

config.cache_store is not set explicitly for production, (I've seen mixed information as to what cache is being used by default)

I have ensured that there is no caching in the browser (by disabling caching in dev tools and bypassing the service worker)

I'm using Heroku with ruby 2.5.3, rails 5.2.1.1, and actionpack-action_caching 1.2.0

How do I know it's not being cached at the database layer or with Fragment Caching?

I added logging to the action which only logs the first time a page is accessed after a restart

Update: I added some more logging and found out that my before actions are also being cached. They were working a few weeks ago.

Gemfile

source 'https://rubygems.org'

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



ruby '2.5.3'



# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'

gem 'rails', '~> 5.2.1'

# Use postgres as the database for Active Record

gem 'pg'

# Use Puma as the app server

gem 'puma', '~> 3.11'

# Use SCSS for stylesheets

gem 'sass-rails', '~> 5.0'

# Use Uglifier as compressor for JavaScript assets

gem 'uglifier', '>= 1.3.0'

# See https://github.com/rails/execjs#readme for more supported runtimes

# gem 'mini_racer', platforms: :ruby



# Use CoffeeScript for .coffee assets and views

gem 'coffee-rails', '~> 4.2'

# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks

gem 'turbolinks', '~> 5'

# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder

gem 'jbuilder', '~> 2.5'

# Use Redis adapter to run Action Cable in production

# gem 'redis', '~> 4.0'

# Use ActiveModel has_secure_password

gem 'bcrypt', '~> 3.1.7'



# Use ActiveStorage variant

# gem 'mini_magick', '~> 4.8'



# Use Capistrano for deployment

# gem 'capistrano-rails', group: :development



# Reduces boot times through caching; required in config/boot.rb

gem 'bootsnap', '>= 1.1.0', require: false



# add usable dom manipolation

gem 'jquery-rails'



# connect to the google spreadsheet to update the database

gem 'google_drive', '~> 3.0'



# maybe this will beeter support ios?

gem 'autoprefixer-rails', '~> 7.1', '>= 7.1.6'



# store site wide settings in the database

gem "rails-settings-cached"



# cache pages but still run before actions

gem 'actionpack-action_caching'



# servise worker helpers

gem "serviceworker-rails"



group :development, :test do

  # Call 'byebug' anywhere in the code to stop execution and get a debugger console

  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]

end



group :development do

  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.

  gem 'web-console', '>= 3.3.0'

  gem 'listen', '>= 3.0.5', '< 3.2'

  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring

  gem 'spring'

  gem 'spring-watcher-listen', '~> 2.0.0'

end



group :test do

  # Adds support for Capybara system testing and selenium driver

  gem 'capybara', '>= 2.15'

  gem 'selenium-webdriver'

  # Easy installation and use of chromedriver to run system tests with Chrome

  gem 'chromedriver-helper'

end



# Windows does not include zoneinfo files, so bundle the tzinfo-data gem

gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

As you can see here, default cache store in production is mem_cache_store. Therefore, you should be able to clear it in different ways, without restarting the sever. Maciej Mensfeld wrote a blog about these ways. I personally use flush_all command in the cache server if Rails.cache.clear does not make effect.