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Browser cache not updating

browser cache not updating-90

Deprecated This feature has been removed from the Web standards.Though some browsers may still support it, it is in the process of being dropped.

browser cache not updating-1

Now, I'll "touch" the file - change it's modified date using the I've got in my c:\utils folder (from The main directory is set to "Expire Immediately" via IIS's properties dialog.That means "keep it fresh." Underneath the main directory is a directory called /js that is set to expire in 7 days, as seen at right.For optimal viewing and security we recommend that you keep your browser up to date.You’ll find a list of the latest browsers at Browse Happy.For example, I find that if I over-write an image file on the server, it will take me two refreshes for that image to update on the live site. On a larger scale, lets say you roll out a fairly major layout change on a high-traffic website. There is a little trick that I believe comes from the land of Java Script programmers. I'm updating this in June 2013 here just to point out a few important things.

Then maybe I'll pop over into Opera and see how the site is doing over there, only to find on the first render of the page that is a really old version. A huge number of people might see a borked layout the next time they visit, because of CSS caching. To prevent the caching of their scripts, they add a timestamp to the end of the Alter that date format as needed. The theory here is that that link will change every second, and the browser will be tricked into thinking this is a new stylesheet and loading it fresh every time. In production, breaking cache when you push out new CSS is a very good plan.

Here's an abridged HTTP Header view (via ie Http Headers) after hitting the page for the first time ever important stuff in bold.

HTTP/1.1 200 OKServer: Microsoft-IIS/5.1X-Powered-By: ASP. NETCache-Control: no-cache Expires: Fri, GMTDate: Fri, GMTContent-Type: text/html Last-Modified: Fri, GMTETag: "b01be5ef575c61:df3"Content-Length: 115 Note that the Java Script file wasn't return (Content-Length: 0), the ETag is the same, and instead a 304 Not Modified was returned.

That's fine for you, you are used to that kind of thing.

Jason Edmond Beaird had the same idea and even created a little bookmarklet to force it. But breaking cache with a date stamp like presented here would mean you gain no benefit at all from browser caching which would be horrendous for performance.

All other elements must be descendants of this element." href="/en-US/docs/Web/HTML/Element/html" attribute, unless such pages are explicitly listed in the manifest file itself.