Merge pull request rails#54440 from byroot/cache-pool-timeout

Handle connection pool errors in Redis and Memcached stores

Author: byroot

activesupport/lib/active_support/cache/mem_cache_store.rb

@@ -273,7 +273,7 @@ def deserialize_entry(payload, raw: false, **)
 
         def rescue_error_with(fallback)
           yield
-        rescue Dalli::DalliError => error
+        rescue Dalli::DalliError, ConnectionPool::Error => error
           logger.error("DalliError (#{error}): #{error.message}") if logger
           ActiveSupport.error_reporter&.report(
             error,

activesupport/lib/active_support/cache/redis_cache_store.rb

@@ -497,7 +497,7 @@ def supports_expire_nx?
 
         def failsafe(method, returning: nil)
           yield
-        rescue ::Redis::BaseError => error
+        rescue ::Redis::BaseError, ConnectionPool::Error => error
           @error_handler&.call(method: method, exception: error, returning: returning)
           returning
         end