rest_api_sample/config/packages/framework.yaml

framework:
    secret: '%env(APP_SECRET)%'
    #default_locale: en
    #csrf_protection: true
    #http_method_override: true

    # Enables session support. Note that the session will ONLY be started if you read or write from it.
    # Remove or comment this section to explicitly disable session support.
    session:
        handler_id: ~

    #esi: true
    #fragments: true
    php_errors:
        log: true

    cache:
        # Put the unique name of your app here: the prefix seed
        # is used to compute stable namespaces for cache keys.
        #prefix_seed: your_vendor_name/app_name

        # The app cache caches to the filesystem by default.
        # Other options include:

        # Redis
        #app: cache.adapter.redis
        #default_redis_provider: redis://localhost

        # APCu (not recommended with heavy random-write workloads as memory fragmentation can cause perf issues)
        #app: cache.adapter.apcu