Monday, October 05, 2026

JavaScript: Bun AoT vs JIT compile

Jarred Sumner on X: "An early preview of experimental Bun + JSC with ahead-of-time compilation For Claude Code's CLI: 24% faster startup, 48% lower memory, 46% lower CPU, and nearly 2x larger binary size https://t.co/MCy1lHtpfu" / X


Most JavaScript usage is just-in-time compiled. As code runs, types of values are watched and when a function runs frequently enough, a faster specialized version of that function is compiled on-demand. Ahead of time compilation bakes that work into the executable itself.



YeSQL · The Art of PostgreSQL: PGLite SQL => WASM

a free set of 24 short PostgreSQL lessons — one concept, one runnable query, real data, no signup. It’s free to use today, and it’s also a prototype for something I’ve wanted to build for a while: making every query in The Art of PostgreSQL runnable, right on the page.

every runnable query on YeSQL is powered by PGlite, Postgres compiled to WebAssembly, running directly in your browser tab.

YeSQL · The Art of PostgreSQL

Practical PostgreSQL for developers, one concept at a time.

The Art of PostgreSQL, one concept at a time. Every lesson here teaches a single idea with a runnable query and real data — then shows you where it fits in the bigger picture. Browse by topic, or start with the foundations.


$89