A Cache Is a Second Database: Reviewing Agent PRs That Memoize Too Early
This story is from 2026-09-20. It is preserved in the archive; the latest stories are on the live feed.
Agent pull requests that add caching usually look like performance work. They are almost always consistency work. Until the key, lifetime, invalidation path, and stampede behavior are specified, treat an unsolicited cache as a second database that the rest of the system does not know about. This re…
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- 2026-09-20 11:59 · DEV Community — AI
A Cache Is a Second Database: Reviewing Agent PRs That Memoize Too Early