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1276 articles
Master feature flags for safe deployments and controlled rollouts. Learn flag types, LaunchDarkly vs OpenFeature, percentage-based rollouts, user targeting, lifecycle management, detecting stale flags, and trunk-based development patterns.
Decide between fine-tuning and RAG with decision frameworks, cost/performance tradeoffs, hybrid approaches, and evaluation metrics like RAGAS and G-Eval.
Deploy globally on Fly.io without managing Kubernetes. Zero-config deployment, multi-region, Machines API, and cost-effective Postgres hosting.
"The app is slow. Fix it." — said by the founder, with no further context. Is the homepage slow? Checkout? API responses? For which users? On mobile? Under what conditions? Turning vague business pressure into actionable performance work requires measurement before code.
The biggest shifts in 2025-2026 and what''s coming next. A look at the state of backend engineering.