Redis array: short story of a long development process | Hacker News

Redis co-creator Salvatore Sanfilippo described building a new Redis array feature with an AI-assisted workflow over four months.

He drafted specs with one model, had other AIs critique the design, then iterated on plans, tests, and implementation with help from tools like Claude and Codex.

The process shows how coding agents can speed up complex systems work, but human review is still needed for correctness and polish.

The project also touched Redis internals such as AOF, RDB, HyperLogLog, and the TRE library while shaping the sparse array design.