{"items":[{"id":"661db2ed-f85c-41e4-bebd-fad556cebda9","slug":"rolling-out-a-service-worker-safely-scope-versioned-caches-the-waiting-worker-and-a-kill-switch-661db2ed","title":"Rolling out a service worker safely: scope, versioned caches, the waiting worker and a kill switch","summary":"A service worker that caches HTML can pin users to old code after a deploy. 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