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What Senior Developers Look for in a Rails PR Real Hiring Signals After reviewing hundreds of pull requests in production systems, these are the patterns that consistently stand out. After 4.5+ ye…
JSON:API vs Custom JSON in Rails: Consistency for React Clients When your frontend grows, inconsistent APIs become a bigger bottleneck than raw performance. After working on several Rails + React s…
Real Time Updates in Rails: Action Cable vs Polling vs SSE for Admin Dashboards Real time is expensive—connection state, memory, and cognitive load. Pick the smallest tool that fits the job. Intern…
Real Time Updates in Rails: Action Cable vs Polling vs SSE for Admin Dashboards Real time is expensive—connection state, memory, and cognitive load. Pick the smallest tool that fits the job. Intern…
Feature flags are how you ship payment adjacent changes with a kill switch and a clear blast radius. What you'll learn Minimal viable flagging vs enterprise platforms Tenant targeted rollouts and…
Uploads are malware , PII , and storage bills waiting to happen. This is the checklist we use for Rails + S3 or compatible in regulated ish environments. What you'll learn MIME and extension traps…
Caching can halve load—or cause subtle security bugs. I layer Redis , HTTP cache , and SWR style thinking for partner facing JSON. What you'll learn Cache keys and TTLs that survive deploys What…
N+1 queries still ship to production in 2025. The fix isn’t memorizing three methods—it’s a habit of profiling and strictness. What you'll learn includes vs preload vs eager load —when each hurts…
Sometimes the document model matches how you ingest events—but you still need readable aggregates . I share aggregation pipeline patterns we use for funnels and rough cohort views, and when we push d…
Sidekiq delivers at least once. “Exactly once” is something you design with idempotency and clear product language. What you'll learn How to explain retries to finance and compliance Outbox ish p…
Tenant leaks are career defining bugs. Multi tenant Rails needs discipline , not a single default scope hack. What you'll learn Scoping strategies we’ve reviewed with auditors Tests that try to c…
Noisy logs hide incidents. Good observability ties HTTP requests , jobs , and business events into a story you can debug at 2am. What you'll learn Structured fields we always include Correlating…
Public APIs attract scrapers, brute force, and accidental infinite loops . Rate limiting is product infrastructure. I cover Rack::Attack , Redis backed keys, per tenant limits, and response headers t…
Every extra kilobyte of JS is latency and maintenance . We measured what happened when Turbo/Stimulus replaced a small React island on a Rails SaaS. What you'll learn What to measure before/after…
Rails + React can mean a thousand different architectures. I compare monolith + API vs separate SPA , with hiring and deploy complexity in mind. What you'll learn A simple matrix: SEO, time to shi…
“Which database is better?” is the wrong question. The right one is which shape of data and which guarantees this feature needs. I work across Rails + Postgres and document stores ; this is how we de…
Breaking JSON for mobile or B2B partners is expensive. Versioning is how you ship without a support fire drill. I compare URL vs header versioning, how we document sunsets, and the contract tests tha…
Partners and processors will deliver the same webhook twice. Your API has to stay safe when they do. Here’s how we think about idempotency keys , storing fingerprints, and returning consistent respon…
Moving a customer facing app to Rails 8 is less about blog demos and more about regressions, ops, and what your team actually runs in production . This post is the checklist we use before we call an…