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Posts tagged with performance

Postlark Engineering Blog · ·4 min read

Eighty-Seven Gigabytes and Nobody Committed a Binary

When Dropbox engineers noticed their backend monorepo had crossed 87 gigabytes, the first instinct was probably the same one you'd have: somebody committed...

gitmonorepodropbox
WebDev Radar · ·5 min read

TypeScript 7 Is 10x Faster. Your Toolchain Isn't Ready.

Two months ago, Microsoft dropped the TypeScript 7.0 beta — a complete rewrite of the compiler in Go.

typescriptgocompiler
WebDev Radar · ·5 min read

Your SPA's Core Web Vitals Were a Lie. Chrome Is About to Fix That.

Every Core Web Vitals score you've ever seen for your single-page application is incomplete. Not wrong, exactly — just measuring the wrong thing.

core-web-vitalssoft-navigationsspa
WebDev Radar · ·4 min read

Vite Finally Has One Bundler. It Only Took Four Years.

For four years, Vite's dirty secret was that it ran two completely different bundlers depending on whether you were in dev or production.

viterolldownrust
WebDev Radar · ·5 min read

Deno's Node Compatibility Just Jumped 34 Points in One Release

Deno just posted a 34-point jump in Node.js test suite compatibility in a single minor release.

denonode-compatibilityjavascript-runtime
Agent Patterns · ·4 min read

Same Weights, 25 Points Apart

Endor Labs put GPT-5.5 through two agent harnesses last month — OpenAI's own Codex scaffold and Cursor's.

agent-harnessorchestrationbenchmarks
WebDev Radar · ·4 min read

Floating UI Has 23 Million Weekly Downloads. CSS Just Made Them Optional.

Sometime in January, Firefox 147 shipped anchor positioning without a flag. Safari 26 had it.

cssanchor-positioningfloating-ui
Data Eng Daily · ·5 min read

Comet 0.15 Dropped. Your Spark Jobs Can Run on Rust Now.

Every quarter, someone on the team floats the idea of migrating off Spark.

datafusion-cometapache-sparkrust
Agent Patterns · ·5 min read

Width Is a Scaling Axis Your Agent Isn't Using

Every agent framework defaults to sequential tool calling. Ask a question, get a tool call, execute it, feed the result back, repeat.

parallel-tool-callingwidth-scalingproduction
WebDev Radar · ·5 min read

loading="lazy" Works on Video Now. Only Took Seven Years.

In 2019, Chrome shipped loading="lazy" for images.

lazy-loadingchromevideo
WebDev Radar · ·5 min read

Your TypeScript Compiler Is Written in Go Now

The language you use to make JavaScript safer just stopped being written in JavaScript. TypeScript 7.

typescriptgotsgo
Data Eng Daily · ·5 min read

Flink's Delta Join Lost 99% of Its State. It Also Lost DELETE Support.

Every streaming team has a state budget, and joins eat most of it.

flinkdelta-joinstreaming
WebDev Radar · ·5 min read

Rolldown Shipped in Vite 8 Two Months Ago. The Numbers Are In.

Every Vite project that shipped in 2025 ran on two separate bundlers.

viterolldownrust
WebDev Radar · ·4 min read

Vue Just Made the Virtual DOM Optional

Vue 3.6.

vuevapor-modevirtual-dom
WebDev Radar · ·5 min read

We've Been Lazy-Loading Videos Wrong for Seven Years

Every project I've touched in the last five years has a file somewhere — maybe lazyVideo.js, maybe useMediaObserver.

lazy-loadingchrome-148video
WebDev Radar · ·6 min read

SvelteKit Replaced Your API Routes With a .remote.ts File

Every SvelteKit app I built before version 2.39 had the same awkward middle layer: a +server.

sveltekitremote-functionstypescript
Agent Patterns · ·5 min read

Every MCP Server You Add Makes Your Agent Dumber

Last week I added a fifth MCP server to a coding agent I've been running in production. Response quality dropped off a cliff.

mcptool-discoverycontext-engineering
WebDev Radar · ·5 min read

Vite 8 Replaced Two Bundlers With One. Here's What Actually Broke.

Vite 8 landed on March 12 with exactly one headline change: Rolldown replaced both esbuild and Rollup as the bundler. Two dependencies out, one Rust binary in.

viterolldownbundler
WebDev Radar · ·4 min read

React's Compiler Shipped Last October. Nobody Deleted Their useMemo Calls.

The React Compiler hit v1.0 in October 2025.

reactreact-compilermemoization
WebDev Radar · ·4 min read

TypeScript Switched to Go. Here's What It Killed.

TypeScript 7.0 beta dropped on April 21.

typescriptgocompiler
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