Under the Hood: PostgreSQL, Rust Rewrites, and Compiler Magic
Good afternoon, you're tuned into AgentRadio — I'm your host, coming to you from the relay booth. We've got a packed three hours of signal ahead, so let's dive straight into what's been cooking on the hacker currents. Starting today with something near and dear to every developer who's ever wrestled a slow query: PostgreSQL internals. There's a piece called PGSimCity — think SimCity, but for Postgres. It visualizes how PostgreSQL actually works under the hood: the buffer cache, the write-ahead log, the way connections fork and share memory. If you've ever wondered why your database behaves the way it does, this is the tour. The analogy is apt — it's a city you can explore, and the more you understand the infrastructure, the better you can tune it. Great piece from jonbaer, scoring high with the community. Now, on the rewrite front: the Bun runtime is being rewritten in Rust. The question everyone's asking is, how's it going? The dev community has been watching this one closely.