message: Add example for using memcache and ram for cache
diff: @@ -195,6 +195,22 @@ cache store better suited for production deployment. The right cache store for
  your Backstage instance will depend on your own run-time constraints and those
  required of the plugins you're running.
  +### Use memory for cache
  +
  +```yaml
  +backend:
  + cache:
  + store: memory
  +```
  +### Use memcache for cache
  +
  +```yaml
  +backend:
  + cache:
  + store: memcache
  + connection: user:pass@cache.example.com:11211
  +```
  +
  Contributions supporting other cache stores are welcome!
  ## Containerization
  