Tutorials, stack comparisons, tool reviews, and productivity tips — code that ships.
Your order-fulfillment code is a tangle of boolean flags, if-else chains, and silent failure paths. Replace it with an explicit state machine that is testable, auditable, and survives server restarts.
Stop storing password hashes. Here is a working WebAuthn / passkey implementation for Node.js that replaces passwords with biometric or device-bound credentials using the FIDO2 standard, with server-side validation, credential storage in Postgres, and a minimal client implementation.
Row-by-row INSERT is the slowest way to move data into PostgreSQL. Here is the COPY command, how to use it from Node.js, the error-handling sharp edges, and the benchmark that proves 10x faster bulk loads.
Your API endpoint builds a full JSON array before sending anything, so the first byte arrives after the last database query. Switch to newline-delimited JSON streaming and get the first item to the client in milliseconds, with backpressure handling, proper error recovery, and no extra dependencies.
The packages you depend on can turn malicious overnight. Here is a practical pipeline for auditing npm dependencies, detecting hijacked packages, enforcing lockfile integrity, and preventing supply chain attacks in CI without blocking every deploy.
Prisma is easy to set up and hard to tune. Connection pool thrashing, N+1 queries, and slow batch operations hit every production deployment. Here are the exact patterns that fix them, with benchmarks.
A pentest found an XSS hole in your app. Your CDN is not setting HSTS. And your Content-Security-Policy either does not exist or lets everything through. Here is the header-by-header guide to fixing the six headers every production site and API should ship, with working middleware code and a CSP builder that does not make you hate yourself.
Your SPA works fine in development and then every cross-origin request fails in staging with a cryptic CORS error. Here is what the preflight, the three response headers, and the credential flag actually do under the hood, plus a test harness that lets you verify CORS behavior before you deploy.
The Docker Compose setup that worked on day one is broken by day thirty: stale volumes, mismatched bind mounts, services that start before the database is ready. Here is the pattern for local dev environments that survive a team of ten without every other developer running a different setup.
Your Postgres cluster has never been tested with a real restore. When the accidental DELETE hits at 2 PM on a Friday, pg_dump alone will not save you. Here is the WAL archiving, PITR, and backup-validation pipeline that turns a worst-case scenario into a five-minute recovery.