Map.getOrInsert: Stop Writing the has/get/set Dance
Map and WeakMap now have getOrInsert and getOrInsertComputed, two methods that replace the check-then-set boilerplate every JavaScript codeb...
Oct 9, 2026
4 min
Building a Server-Rendered Dynamic Table of Contents in Next.js: Extraction, Deduplication, and Scrollspy
Client-side DOM scraping for blog tables of contents causes Cumulative Layout Shift, breaks direct fragment links, and ruins search engine s...
Oct 6, 2026
10 min
Astro Live Content Collections: Fresh CMS Data Without a Rebuild
Astro's live content collections fetch CMS and API data at request time with the same typed API as build-time collections, and Astro 7's rou...
Oct 6, 2026
4 min
You Probably Don't Need Elasticsearch: Building a Fast, Typo-Tolerant Search Engine in PostgreSQL
Every engineering team hits the same milestone: your application grows past a few tens of thousands of records, users complain that basic da...
Sep 28, 2026
10 min
Compression Dictionaries: Ship Only the Diff When Your Bundle Changes
Compression Dictionary Transport (RFC 9842) lets the browser tell your server which cached file it already has, so a redeployed bundle can a...
Sep 28, 2026
4 min
Architecture Case Study: Migrating a Developer SaaS from Serverless to a $10 VPS with Docker
Serverless platforms like Vercel and AWS Lambda are the default choice for modern web applications.
Sep 26, 2026
8 min
Uint8Array toBase64 and toHex: Stop Round-Tripping Bytes Through btoa
JavaScript can finally turn bytes into base64 and hex (and back) without the String.fromCharCode and btoa dance. Here's how Uint8Array's new...
Sep 25, 2026
4 min
import defer: Lazy Modules Without Going Async
ES2026's import defer evaluates a module the first time you touch its namespace, not at startup, so you can move heavy work off the cold pat...
Sep 22, 2026
3 min
Turbopack's Persistent Build Cache Only Helps If Your CI Keeps It
Next.js 16.3 turned on Turbopack's persistent build cache by default and published numbers as high as 5.5x. Most CI pipelines will see exact...
Sep 21, 2026
4 min