That doesn't work because browsers have duration limits on ServiceWorkers: https://github.com/w3c/ServiceWorker/issues/980#issuecomment-782094985 https://githu

That doesn't work because browsers have duration limits on ServiceWorkers: https://github.com/w3c/ServiceWorker/issues/980#issuecomment-782094985 https://github.com/w3c/ServiceWorker/issues/980#issuecomment... Also unfortunately Chrome doesn't keep SharedWorker alive after a navigation (Firefox and Safari do): https://issues.chromium.org/issues/40284712 https://issues.chromium.org/issues/40284712 Hopefully Chrome will fix this eventually, it really makes it hard to build performant MPAs.