Fast JIT is no longer a black art: pgrust compiles every SQL query in ~5μs
JIT compilation used to demand hand-written assembly, which is why no production database ships its own compiler today. AI assistance changed that: pgrust's JIT targets assembly directly, hitting ~5μs compile times so every query gets compiled, not just a subset. The post walks through building a toy regex engine with this approach, and it doubles as a concrete argument for why new databases can beat entrenched ones.