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March 20, 2024, 2:06 p.m. |

Simon Willison's Weblog simonwillison.net

Skew protection in Vercel


Version skew is a name for the bug that occurs when your user loads a web application and then unintentionally keeps that browser tab open across a deployment of a new version of the app. If you're unlucky this can lead to broken behaviour, where a client makes a call to a backend endpoint that has changed in an incompatible way.


Vercel have an ingenious solution to this problem. Their platform already makes it easy to …

app application browser call client deployment frontend protection skew tab vercel web zerodowntime

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