We rotated our JWKS without overlap. Here is the 4-minute window that broke prod.

A key rotation issue at an issuer caused a four-minute window where authentication failures spiked to 31.4%, impacting service availability. This occurred because caches did not refresh quickly enough, leading to tokens being rejected due to mismatched keys.

This highlights the critical need for thorough testing and CI checks to ensure seamless key overlap during rotations, preventing silent production bugs that can cause significant downtime.

Read the full article at DEV Community

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