浏览器如何与到期标头，缓存控制标头，最后修改标头一起使用？ [英] How does browser work with expiration headers, cache-control headers, last-modified-header?

问题描述

我是一名Web开发人员，曾经使用过PHP和.NET。拥有超过一年的网络工作经验，我还无法完全理解浏览器的缓存功能，希望这里的Web Gurus可以为我提供帮助。我想到的问题是：

• 浏览器实际上是如何缓存内容的，它是否要求查看缓存文件是否已更改还是不使用服务器，


• 对于开发人员来说，充分利用浏览器缓存的理想方式是什么，同时又能毫不费力地在网站上进行新更改所有。我认为，如果浏览器以某种方式缓存了我的CSS，JS和图像，然后每次仅检查它们对服务器的修改，就可以解决问题。但是我不确定该怎么做。

解决方案

此博客文章可能会帮助您： / p>

http://blog.httpwatch.com/2007/12/10/two-simple-rules-for-http-caching/

它说明了如何使用缓存，同时保持了在需要时进行更改的能力。

I am a web developer, have worked with PHP and .NET both. having over a year of experience working on web I haven't been able to understand the browser caching features thoroughly, I hope Web Gurus here can help me with it. Questions I have in my mind are:

• How does browser actually caches stuff, does it request for to see if the cached file has changed on the server or not,
• What is the Ideal way for a developer to make use of browser caching to its full, but also to be able to push new changes on the site with no hassle at all. I think if browser somehow caches my CSS and JS and Images, and then just makes a checks for their modification to the server every time, this can sort the issue. but I am not sure how to do it.

解决方案

This blog post may help:

http://blog.httpwatch.com/2007/12/10/two-simple-rules-for-http-caching/

It explains how to use of caching, whilst maintaining the ability to make changes when required.

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