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PWA cheat sheet & developer notes

PWA cheat sheet and 2 curated developer notes — core concepts, patterns, and interview prep. Maintained by the DevRecall team.

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01 · PWA

Service Workers & Caching Strategies

Service Workers & Caching Strategies. The Service Worker (SW) is a JS process the browser runs in parallel with your page. It intercepts every outgoing request, lets you cache assets, and works offline. This is the engin…

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02 · PWA

Web App Manifest, Install & Offline UX

Web App Manifest, Install & Offline UX. The manifest is the metadata the OS uses when installing your site. Combined with a Service Worker and HTTPS, it turns the page into a Progressive Web App.. manifest.webmanifest. {…

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Notes from developers

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Reactfrontend

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Apr 2, 2026
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Concepts to know for PWA

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Web Workers: Getting Work Off the Main ThreadWhy one long JavaScript task freezes input, when yielding is enough, and how workers, transferables and SharedArrayBuffer move heavy work off the main thread.Intermediate·13 min

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