Setup Clone/Download https://github.com/meirzamoodle/docker-redis-ssl/tree/main and follow the instructions on the README. Manual testing: Testing performance Log in as admin Navigate to Site Admin > Plugins > Caching > Redis Specify the test server with: 127.0.0.1:6380 Tick the Use TLS encryption checkbox Save changes Navigate to Site Admin > Plugins > Caching > Test performance VERIFY the Redis result at the Store requests when used as an application cache table is tested without any errors. Manual testing: Cache store Log in as admin Navigate to Site Admin > Plugins > Caching > Configuration Add a Redis store by clicking Add instance link in the Redis row. Specif the input with the below value: Store name: Store Redis Server(s): 127.0.0.1:6380 Tick the Use TLS encryption checkbox Save changes VERIFY there is a new store name: Store Redis at the Configured store instances table and the Store mappings value is zero. Click Edit Mappings link at the bottom of the page. Select Store Redis at the Session dropdown. Save changes VERIFY the Store Redis at the Configured store instances table has Store mappings value is more than zero. Manual testing: Session Open the config.php and add the below codes:  $CFG->session_handler_class = '\core\session\redis' ; $CFG->session_redis_host = '127.0.0.1' ; $CFG->session_redis_port = 6380 ; $CFG->session_redis_encrypt = [ 'verify_peer' => false , 'verify_peer_name' => false ]; Open the browser and access the moodle. VERIFY login is working as usual and there is no any errors. Unit Testing Open config.php and add the below codes: define(   'TEST_SESSION_REDIS_HOST' ,   '127.0.0.1:6380' ); define(   'TEST_SESSION_REDIS_ENCRYPT' ,   true ); Make sure all the tests in lib/tests/session_redis_test.php are passed. mdk phpunit -r -u lib/tests/session_redis_test.php