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Why do I not want my web page cached?
For security reasons we do not want certain pages in our application to be cached, ever, by the web browser. This must work for at least the following browsers: Our requirement came from a security test. After logging out from our website you could press the back button and view cached pages.
When to use no-cache to prevent caching?
Pragma: no-cache prevents caching only when used over a secure connection. A Pragma: no-cache META tag is treated identically to Expires: -1 if used in a non-secure page. The page will be cached but marked as immediately expired.
Why does Internet Explorer not cache the response?
If the client communicates with the server over a secure connection ( https://) and the server returns a Pragma: no-cache header with the response, Internet Explorer doesn’t cache the response. However, the Pragma: no-cache header wasn’t for this purpose.
How does cache control work in HTTP 1.0?
The Pragma is per the HTTP 1.0 spec for prehistoric clients. The Expires is per the HTTP 1.0 and 1.1 specs for clients and proxies. In HTTP 1.1, the Cache-Control takes precedence over Expires, so it’s after all for HTTP 1.0 proxies only.
Is there a no cache bug in IE?
When applying those no-cache headers on file downloads anyway, then beware of the IE7/8 bug when serving a file download over HTTPS instead of HTTP. For detail, see IE cannot download foo.jsf. IE was not able to open this internet site. The requested site is either unavailable or cannot be found.
How to disable webpage caching in Internet Explorer 11?
Steps 1 From the top right corner of Internet Explorer 11, click the Gear icon . 2 From the menu, select Internet options. 3 On the General tab, locate the Browsing history section, and click Settings. 4 On the Temporary Internet Files tab, confirm that Every time I visit the webpage is selected.
What can I do to clear cache on my website?
You can clear your cache manually or by caching plugins like WP Super Cache or WP Rocket. Easy to install on any WordPress site, these caching plugins are user-friendly and can improve your website loading speed through effective caching. They can also be used to clear your cache regularly.
How to force a website to refresh the cache?
Go to the specific web page you want to see the new updated content on. You must be on the web page in question, as this method only refreshes the cache for the web page you are currently on. 2. According to what operating system you are using, Microsoft Windows, Mac/Apple or Linux, press one of the following key combinations.
Why is there a cache on my computer?
The ‘cache’ is a tool used by your internet browser to speed up the page loading process. However, sometimes it can cause a problem when websites are updated and developed as files saved in the cache may conflict with what’s actually coded into the website.
How do we control web page caching across all browsers?
You must send Cache-Control: no-store, must-revalidate (some browsers observe no-store and some observe must-revalidate) You never need any of: with cache headers — it doesn’t work at all. Totally useless.
How does caching improve the performance of a web site?
HTTP caching The performance of web sites and applications can be significantly improved by reusing previously fetched resources. Web caches reduce latency and network traffic and thus lessen the time needed to display a representation of a resource. By making use of HTTP caching, Web sites become more responsive.