Service Workers: Caching Strategies and Offline Architecture (Cache First, Network First)

#webdev #javascript #pwa #serviceworkers

I just published a new technical guide on Service Workers, caching strategies, and offline architecture.

This guide is written from an architectural perspective, not as a quick recipe. The main idea is simple: a Service Worker is not just a tool to cache files. It is a response policy layer between your app and the network.

Inside the guide, I cover:

what a Service Worker really is
how to think about install, activate, and fetch
precaching and cache versioning
the real differences between Cache First, Network First, and stale-while-revalidate
hybrid architecture depending on resource type
common implementation mistakes
practical criteria to decide what should be cached and what should not

The guide is aimed at developers who want to stop treating caching as a performance trick and start treating it as a product and resilience decision.

Read it here:
https://tucodigocotidiano.yarumaltech.com/leer_guias/service-workers-estrategias-de-cache-y-arquitectura-offline-cache-first-network-first/