PostgreSQL's char and name Implementation in C: A Byte and a 64-Byte Label
The type named “char” is one by-value byte; “name” is a fixed 64-byte NUL-padded struct whose size is an ABI constant every extension has to agree on.
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PostgreSQL Hashes Lookups: Dynahash and Simplehash
PostgreSQL has two hash tables: dynahash grows one bucket at a time and never rehashes, while simplehash is a templated open-addressing table that resizes without rehashing a …
PostgreSQL Uses SIMD to Scan Strings Faster: One Vector Layer, Six Consumers
PostgreSQL’s port/simd.h is a portable SSE2/NEON vector layer, and COPY FROM, hex coding, JSON escaping, ASCII validation, linear search and radix-tree lookup all use it to skip …
Why tmux Is a Server and Not a Terminal Program
tmux is a daemon that owns real ptys plus thin clients that connect over a UNIX socket.
PostgreSQL's Range Type Implementation in C: Bounds Inline, Flags Last
A range is a varlena: length, its own type OID, two inline bounds, and a flags byte at the very end — with discrete types rewriting exclusive bounds on the way in.