| Q | A | ---------------- | ----- | Bug report? | yes | Feature request? | no | BC Break report? | no | RFC? | no | Symfony version | 3.3.0, 3.3.1, 3.3.2 The `HttpCache` throws a deprecation notice when esi is enabled: ``` # config.yml esi: { enabled: true } # app_dev.php $kernel = new AppCache($kernel); ``` `User Deprecated: Setting the "esi" pre-defined service is deprecated since Symfony 3.3 and won't be supported anymore in Symfony 4.0.`