Daniel J. Bernstein updated cdb (Constant database) to go beyond 4GB

Daniel J. Bernstein has updated cdb (Constant database) to support databases beyond 4GB, with the new version released as 20251021. The cdb structure offers fast lookups, low overhead, and no random limits, making it efficient for handling large databases. Various packages now provide tools for using cdb format, including cdb64 and implementations in languages like Rust, Go, Perl, and Python. Spotify's sparkey is a spinoff of cdb that enables constant databases larger than 4GB.