rails

Validations ensure data consistency before persisting to the database, catching invalid states early in the request lifecycle. I combine presence validations for required fields, uniqueness constraints that map to database indexes, and format validati

Recurring tasks like cleanup jobs, report generation, or cache warming need reliable scheduling. The sidekiq-scheduler gem extends Sidekiq with cron-like scheduling without requiring separate infrastructure like cron or Kubernetes CronJobs. I define s

Wizards are often over-engineered with client state machines. With Turbo Frames, I render each step inside a frame, and the “Next” button simply POSTs to update the record and then redirects to the next step URL. If validation fails, I re-render the s

After a successful inline create, I usually want to clear the form. You can replace the whole form partial, but sometimes you want to preserve other state (like which field was focused) and simply reset values. A clean Hotwire approach is a custom Tur

Long-running requests tie up worker threads and degrade overall application responsiveness. Rack::Timeout enforces request timeouts at the Rack layer, killing requests that exceed configured limits. I set conservative timeouts (15-30 seconds) and hand

If a hot key expires, you can stampede your DB. race_condition_ttl lets one process recompute while others serve stale content briefly. This is a reliability pattern masquerading as caching.

Large JSON payloads consume bandwidth and increase latency, especially for mobile clients on slow connections. Rack::Deflater middleware automatically compresses responses using gzip when clients send Accept-Encoding: gzip headers. This typically redu

When queries become too complex for scopes—involving multiple joins, subqueries, or raw SQL fragments—I extract them into dedicated query objects. Each query object is a plain Ruby class that encapsulates one specific query pattern and returns an Acti

I used a transactional outbox when I needed my database write and my event publish to succeed or fail together. In OutboxEvent model, I treated the outbox like a queue: a durable row per event, a dedupe_key for idempotency, and a ready scope that pull

Stimulus adds JavaScript behavior to HTML without building SPAs. Controllers attach to DOM elements via data-controller. I use Stimulus for modals, dropdowns, form validation, autocomplete. Actions connect events to controller methods via data-action.

Copy buttons are everywhere (invite links, API keys, CLI commands). With Stimulus, I keep it tiny and resilient: use navigator.clipboard.writeText when available, and fall back to selecting a hidden input for older browsers. I also provide immediate f

Redis provides a fast, in-memory cache for expensive computations that don't change frequently. I use Rails.cache with the Redis store to cache things like trending posts calculations, aggregated statistics, or external API responses. The fetch method