# Ruby (Rails)

## Startup delay

Rails startup (bundle exec, asset precompilation, initializer chain) typically takes 30–90 seconds. Extend the liveness probe delay to avoid restart loops:

```yaml
livenessProbe:
  tcpSocket:
    port: 3000
  initialDelaySeconds: 90
  periodSeconds: 30
  failureThreshold: 6
readinessProbe:
  httpGet:
    path: /
    port: 3000
  initialDelaySeconds: 60
  periodSeconds: 15
  failureThreshold: 3
```

## Sidekiq workers

Sidekiq is a full Ruby process, not a thread pool. Deploy it as a separate Deployment from the web process with 256–512Mi memory. It does not need an HTTP liveness probe — omit it or use a simple `exec` check.

## Non-interactive rails console / rake tasks

```bash
kubectl exec -n <ns> <pod> -- bundle exec rake db:migrate
kubectl exec -n <ns> <pod> -- bundle exec rails runner "User.create!(...)"
```