Articles
In-depth articles on AI, web development, cloud native, and indie hacking.
Cron expressions describe recurrence but cannot determine which occurrence ran after DST shifts, outage catch-up, or a lost response. This article gives every scheduled occurrence a stable identity, an execution ledger, and a rollback-safe cutover protocol.
Already use PostgreSQL? Advisory Locks provide application-level coordination without Redis. This guide covers session- and transaction-level locks, blocking vs. try-lock APIs, key design, task scheduling, migrations, idempotency, row-lock differences, and production pitfalls.
A compatible result from the registry does not mean every production consumer can interpret new fields correctly. This article binds the real consumer inventory, Avro reader/writer rules, historical data samples, and upgrade watermarks, then switches producers according to compatibility direction.
Refs are more than "references to the DOM". In component libraries, they shape the API experience. Learn useRef, forwardRef, useImperativeHandle, callback refs, and React 19's ref-as-prop model.
Documentation clicks and install-command execution do not mean an SDK is integrated. This article measures Time to First Success with versioned journeys, server-side success receipts, and a complete failure denominator, then defines out-of-order event handling, environment segmentation, and reversible rollout gates.
Dark mode isn't simply inverting colors—you have to handle system-preference following, manual switching, persistence, flash (FOUC), and image/icon adaptation. This article covers the prefers-color-scheme media query, class-switching strategy, localStorage persistence, anti-flash scripts, and a CSS-variable theme system, delivering a complete dark-mode
Changing every publication date to today will not restore content value. This article uses claim sources, query windows, business importance, and change summaries to prioritize refreshes while ensuring that lastmod reflects only substantive changes.
Configuration should not be hard-coded into images: ConfigMaps store nonsensitive settings, while Secrets store credentials. This article covers creation and mounting, env vs. volume, base64 and encryption with etcd, KMS, and external operators, ConfigMap hot updates and the subPath trap, and production secret management with External Secrets Operator.
Search Console aggregates cannot explain which release a specific crawl received. This guide connects verified bot identity, releases, status codes, canonicals, and cache negotiation into queryable evidence.
Users see a blank screen but you do not know about it. Sentry can catch errors before users report them. Learn frontend error tracking: Sentry SDK setup, Error Boundaries, source map uploads for production source lines, release tracking, performance monitoring, and privacy redaction.
Setting a five-second timeout on every service lets the full call chain exceed the user's budget, while a client disconnect does not mean downstream work has stopped. This article defines trusted ingress deadlines, hop-by-hop remaining budgets, shared retry allowances, and verifiable cancellation convergence.
Why does PostgreSQL choose a Seq Scan over an Index Scan? Its planner uses statistics to estimate which is faster, and inaccurate statistics produce bad plans. This article explains how ANALYZE collects statistics, how they guide planning, when stale data causes slow queries, and how to intervene with statistics targets and extended statistics.