How to invalidate container cache in Symfony2?

Question

Part of my Symfony app configuration is being loaded from legacy database, so sometimes I need to invalidate container cache to make use of updated data.

Is there an

Answer 1

1. As per CacheClearCommand:

   $filesystem   = $this->container->get('filesystem');
   $realCacheDir = $this->container->getParameter('kernel.cache_dir');
   $this->container->get('cache_clearer')->clear($realCacheDir);
   $filesystem->remove($realCacheDir);
   

2. Directly call CacheClearCommand from code:

   services.yml

   clear_cache_command_service:
       class: Symfony\Bundle\FrameworkBundle\Command\CacheClearCommand
       calls:
          - [setContainer, ["@service_container"] ]
   

   Than it's possible to do something like this (note that this will warmup the cache):

   $clearCacheCommand = $this->container->get('clear_cache_command_service');
   $clearCacheCommand->run(new ArgvInput(), new ConsoleOutput());