#Private cache type how to#

Public static void RegisterGlobalFilters(GlobalFilterCollection filters)įilters.Add(new CachingHeadersFilterAttribute()) In FilterConfig.cs (crated automatically in ASP.NET MVC template): public class FilterConfig Response.AppendHeader('Pragma', 'no-cache') Public override void OnResultExecuted(ResultExecutedContext filterContext) You could use action filter to set those headers in every ASP.NET response: public class CachingHeadersFilterAttribute : ActionFilterAttribute There is a great SO answer that lists which headers should be set: Cache-Control: no-cache, no-store, must-revalidate If in spite of this you still for some reason want to exclude any possibility of the caching, you could do it by setting specific HTTP headers. There is a possibility to use caching with ASP.NET MVC but you should make some efforts to enable it. View: = 'Home you refresh such page in abrowser, you'll see fresh time on every request: Create an action that returns current time: public ActionResult Index() There is a very simple test to validate above statements. Presence of 'Cache-Control: private' header does not mean at all that cached version of the page will be used on repeated requests.You need to make an efforts to enable caching in ASP.NET. Caching is not used by default for dynamic ASP.NET pages.protected void Application_BeginRequest()Ĭ(HttpCacheability.NoCache) System.Web also includes classes for cookie manipulation, file transfer, exception information, and output cache control. This namespace includes the class, which provides extensive information about the current HTTP request the class, which manages HTTP output to the client and the class, which provides access to server-side utilities and processes.

The System.Web namespace supplies classes and interfaces that enable browser-server communication. IIS/asp.net allows this to be configured from the day it was introduced like this, ref1, ref2, ref3, ref4 and

#Private cache type how to#

how to prevent it from being added by default? IIS uses the secure and more obvious/useful one for default, which happens to be privateĢ. Standard Cache-Control directives that can be used by the server in an HTTP response. Standard Cache-Control directives that can be used by the client in an HTTP request. http caching header attrubute Cache-Control: private is added by default by IIS/ASP.NET ? My question is, what adds this header, and how can I prevent it from being added by default?Īdding my bit to the great answers, given by community ġ. You will see that it contains Cache-Control: private. Now start the project in IIS Express (just press the play button), and use F12 devtools in the browser to look at the http response. We are not able to migrate our system to core yet) solution with an MVC project. How to reproduce: Open visual studio and create a new ASP.NET Framework (yes, framework, no not Core. Unfortunately the server adds Cache-Control: private to all responses automatically, so I have to manually override it everywhere. For example, I don't want XHR JSON responses to be cached, since they contain dynamic content. I understand that it can be useful to cache dynamic pages, but in my application I don't want to cache dynamic pages/responses. The question I have is why Cache-Control: private is added by default by IIS/ASP.NET and how to prevent it from being added by default. To clarify, I understand very well what Cache-Control: private is, the difference between private, public, no-store, etc and how/when to use them. Static content is hosted on a CDN, so is not served by IIS. Why does all responses from ASP.NET contain Cache-Control: private? Even a 404 response? Is there something in IIS that sets this default value, and is there a way to configure it? Or is there something in ASP.NET that sets this?įor dynamic content (that is, all MVC results) I would not like it to be cached by the browser, since it is dynamic and can change at any time.