# performance

The TypeScript team rewrote the entire compiler in native Go. Real-world tests show 8x to 12x faster compilation with lower memory usage. VS Code project compilation dropped from 125.7 seconds to 10.6 seconds. Time to first error in the editor went from 17.5 seconds to under 1.3 seconds.

Someone called Ghostty "unusable" for taking a second to launch. Its author Mitchell Hashimoto replied with a textbook tradeoff lesson: the slow cold start is not a bug — it is cost paid up front to buy eight smooth hours. Are you optimizing a button you press once a day?

After meeting the browser's five-player team, this post follows the rendering combo: DOM, layout, paint, rasterization, and compositing, all inside a 16ms frame budget. It explains why some animations stay smooth while others jank.

Simon Willison published notes on Tobi Lütke's autoresearch PR — an AI-driven experiment loop that made the Liquid template language (which Tobi created for Shopify 20 years ago) 53% faster with 61% fewer memory allocations.

Most developers know Redis as a cache. But using Redis only as a cache is like buying a Ferrari just to drive to the grocery store. Redis isn't a cache that happens to be fast — it's a data structure server that happens to be great at caching.