mastodon/config/initializers/cache_logging.rb

# Log cache errors with Rail's logger
# This used to be the default in old Rails versions: https://github.com/rails/rails/commit/7fcf8590e788cef8b64cc266f75931c418902ca9#diff-f0748f0be8a653eea13369ebb1cadabcad71ede7cfaf20282447e64329817befL86
Rails.cache.logger = Rails.logger
Add logging for Rails cache timeouts (#21667) * Reduce redis cache store connect timeout from default 20 seconds to 5 seconds * Log cache store errors 2022-11-27 20:37:37 +01:00			`# Log cache errors with Rail's logger`
			`# This used to be the default in old Rails versions: https://github.com/rails/rails/commit/7fcf8590e788cef8b64cc266f75931c418902ca9#diff-f0748f0be8a653eea13369ebb1cadabcad71ede7cfaf20282447e64329817befL86`
			`Rails.cache.logger = Rails.logger`