Fetch API Caching: A Complete Guide

Caching feature of browser's Fetch API is one of the most powerful — and most misunderstood — tools in web development. It gives you fine-grained control over how HTTP requests interact with the cache through a single cache option. Used correctly, it can dramatically speed up your app, reduce server load, and improve offline resilience. Used incorrectly, it can serve stale data, confuse users, and cause hard-to-debug issues. Before diving into the options, it's worth understanding what "the cach