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A Cache Key Bug in an Agent PR: Cross-Tenant Leakage, Tested

This story is from 2026-10-16. It is preserved in the archive; the latest stories are on the live feed.

The pull request arrived at 02:14 with a green checkmark and three files changed. Its claim was modest: skip duplicate model calls, cut latency on repeated prompts. The reviewer's first instinct was to trust the test suite. The tests only covered the happy path. That is exactly where a caching chan…

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  1. 2026-10-16 04:59 · DEV Community — AI
    A Cache Key Bug in an Agent PR: Cross-Tenant Leakage, Tested

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