Prevent Caching in ASP NET MVC for specific actions using an attribute

Question

I have an ASP NET MVC 3 application  This application requests records through jQuery  jQuery calls back to a controller action that returns results in JSON format  I have not been able to prove this  but I m concerned that my data may be getting cached    I only want the caching to be applied to specific actions  not for all actions   Is there an attribute that I can put on an action to ensure that the data does not get cached  If not  how do I ensure that the browser gets a new set of records each time  instead of a cached set

User · Answer

All you need is    OutputCache Duration 0   public JsonResult MyAction    or  if you want to disable it for an entire Controller    OutputCache Duration 0   public class MyController   Despite the debate in comments here  this is enough to disable browser caching - this causes ASP Net to emit response headers that tell the browser the document expires immediately

User · Answer

Output Caching in MVC    OutputCache NoStore   true  Duration   0  Location  None   VaryByParam          OR  OutputCache NoStore   true  Duration   0  VaryByParam    None

User · Answer

To ensure that JQuery isn t caching the results  on your ajax methods  put the following     ajax       cache  false       rest of your ajax setup       Or to prevent caching in MVC  we created our own attribute  you could do the same  Here s our code    AttributeUsage AttributeTargets Class   AttributeTargets Method   public sealed class NoCacheAttribute   ActionFilterAttribute       public override void OnResultExecuting ResultExecutingContext filterContext                filterContext HttpContext Response Cache SetExpires DateTime UtcNow AddDays -1            filterContext HttpContext Response Cache SetValidUntilExpires false           filterContext HttpContext Response Cache SetRevalidation HttpCacheRevalidation AllCaches           filterContext HttpContext Response Cache SetCacheability HttpCacheability NoCache           filterContext HttpContext Response Cache SetNoStore             base OnResultExecuting filterContext             Then just decorate your controller with  NoCache   OR to do it for all you could just put the attribute on the class of the base class that you inherit your controllers from  if you have one  like we have here    NoCache  public class ControllerBase   Controller  IControllerBase   You can also decorate some of the actions with this attribute if you need them to be non-cacheable  instead of decorating the whole controller   If your class or action didn t have NoCache when it was rendered in your browser and you want to check it s working  remember that after compiling the changes you need to do a  hard refresh   Ctrl F5  in your browser  Until you do so  your browser will keep the old cached version  and won t refresh it with a  normal refresh   F5

User · Answer

ASP NET MVC 5 solutions   Caching prevention code at a central location  the App Start FilterConfig cs s RegisterGlobalFilters method       public class FilterConfig               public static void RegisterGlobalFilters GlobalFilterCollection filters                                           filters Add new OutputCacheAttribute                               NoStore   true                  Duration   0                  VaryByParam    quot   quot                   Location   System Web UI OutputCacheLocation None                                   Once you have that in place my understanding is that you can override the global filter by applying a different OutputCache directive at Controller or View level  For regular Controller it s   OutputCache NoStore   true  Duration   0  Location System Web UI ResponseCacheLocation None  VaryByParam    quot   quot     or if it s an ApiController it d be  System Web Mvc OutputCache NoStore   true  Duration   0  Location   System Web UI OutputCacheLocation None  VaryByParam    quot   quot

User · Answer

Here s the NoCache attribute proposed by mattytommo  simplified by using the information from Chris Moschini s answer    AttributeUsage AttributeTargets Class   AttributeTargets Method   public sealed class NoCacheAttribute   OutputCacheAttribute       public NoCacheAttribute                 this Duration   0

User · Answer

Correct attribute value for Asp Net MVC Core to prevent browser caching  including Internet Explorer 11  is    ResponseCache Location   ResponseCacheLocation None  NoStore   true     as described in Microsoft documentation   Response caching in ASP NET Core - NoStore and Location None

User · Answer

In the controller action append to the header the following lines      public ActionResult Create string PositionID                Response AppendHeader  Cache-Control    no-cache  no-store  must-revalidate       HTTP 1 1          Response AppendHeader  Pragma    no-cache       HTTP 1 0          Response AppendHeader  Expires    0       Proxies

User · Answer

You can use the built in cache attribute to prevent caching   For  net Framework   OutputCache NoStore   true  Duration   0    For  net Core   ResponseCache NoStore   true  Duration   0    Be aware that it is impossible to force the browser to disable caching  The best you can do is provide suggestions that most browsers will honor  usually in the form of headers or meta tags  This decorator attribute will disable server caching and also add this header  Cache-Control  public  no-store  max-age 0  It does not add meta tags  If desired  those can be added manually in the view   Additionally  JQuery and other client frameworks will attempt to trick the browser into not using it s cached version of a resource by adding stuff to the url  like a timestamp or GUID  This is effective in making the browser ask for the resource again but doesn t really prevent caching   On a final note  You should be aware that resources can also be cached in between the server and client  ISP s  proxies  and other network devices also cache resources and they often use internal rules without looking at the actual resource  There isn t much you can do about these  The good news is that they typically cache for shorter time frames  like seconds or minutes

User · Answer

For MVC6  DNX   there is no System Web OutputCacheAttribute  Note  when you set NoStore Duration parameter is not considered  It is possible to set an initial duration for first registration and override this with custom attributes   But we have Microsoft AspNet Mvc Filters ResponseCacheFilter   public void ConfigureServices IServiceCollection services                      services AddMvc config  gt                        config Filters Add                   new ResponseCacheFilter                      new CacheProfile                            NoStore true                                                            It is possible to override initial filter with a custom attribute       AttributeUsage AttributeTargets Class   AttributeTargets Method       public sealed class NoCacheAttribute   ActionFilterAttribute               public override void OnResultExecuting ResultExecutingContext filterContext                        var filter filterContext Filters Where t   gt  t GetType      typeof ResponseCacheFilter   FirstOrDefault                if  filter    null                                ResponseCacheFilter f    ResponseCacheFilter filter                  f NoStore   true                    f Duration   0                             base OnResultExecuting filterContext                     Here is a use case       NoCache       HttpGet      public JsonResult Get                             return Json new DateTime

[c#] Prevent Caching in ASP.NET MVC for specific actions using an attribute

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