![]() ![]() If there's a match, the response is read from the cache, whichĮliminates both the network latency and the data costs that the transfer incurs. To check whether there is a valid cached response that can be used to fulfill Those APIs are supported in all browsers:Īll HTTP requests that the browser makes are first routed to the browser cache It's the general nameįor a collection of web platform APIs. There isn't actually a single API called the HTTP Cache. This guide shows you the basics of an effective HTTP caching implementation. It's not necessarily the most powerful or flexibleĪpproach, and you have limited control over the lifetime of cached responses,īut it's effective, it's supported in all browsers, and it doesn't require much How can you avoid unnecessary network requests? The browser's HTTP Cache is yourįirst line of defense. ![]() Network request is a waste of their money. If a person is accessing your site with a limited mobile data plan, every unnecessary.Your page won't load until all of its critical resources have downloaded completely.Large responses require many roundtrips between the browser and the server.Fetching resources over the network is both slow and expensive:
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