PSA: if you add a Service Worker to your app *but do not use it to handle top-level requests*, things *will* be slower.
: this isn't blame-shifting, it's physics. Process & thread creation take time. SWs are *intentionally* not magic
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: SWs enable many things, but all things are a trade-off. Making adding a SW to a site with it is hard if not offline-first
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: and by "offline-first", I mean "don't wait on the network response to get your HTML document running"
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how much SW overhead are we talking about? 100ms, 500ms?
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: it's system dependant; worse on slower boxes. We see SW startup in 10s-100s of ms @ 95th percentile
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