Florencio Schroeder

You need to use includes and select wisely. Avoid N+1 queries with includes and only load the fields you need with select. Especially for things like configuration lookups, permissions or repeated calculations during a request. Use background tasks to pre-process and cache expensive data (e.g. use Redis or rendered views). If you are waiting for multiple external calls, use Parallel or concurrent-ruby to execute them in parallel during the request cycle.