はてなブックマーク

A read cliff, throughout this series, is the largest table size at which real dashboard pages still load: the median of three endpoint probes at or under 5 seconds, none timing out. It earns the name because of what sits one 10x step past it: queries don't slow down, they stop coming back. Each signal's read cliff sits exactly 100x further out on DuckDB than on SQLite, at equal or better latency,