How to prevent cache in jquery for asp.net site

Question

I have an MVC4 app with asp.net with jquery the project load all pages at firs time then update contents via ajax.

After log off of the app, all pages remain on cache. It cause that in the next login, new data are mixed with old data or some data are repeated.

How can I do to delete all cache at log off?

Andy T · Accepted Answer · 2012-12-13 21:03:21Z

1

I am assuming the the browser is the one caching the page. If this is the case, you can't simply remove the cache from the browser when they log off.

Instead, you will need to tell the browser to not cache any of the pages.

You can do this with a simple action filter and override the OnResultExecuting method

    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);

        base.OnResultExecuting(filterContext);
    }

answered Dec 13, 2012 at 21:03

Andy T

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6 Comments

Juan Pablo Gomez Over a year ago

THis method are located in account controller ?

Juan Pablo Gomez Over a year ago

amazing, tks for your help.

Juan Pablo Gomez Over a year ago

Just a final question, It prevents to cache or delete actual cache ? (the browsers cache)

Andy T Over a year ago

It won't add it to its cache.

Andy T Over a year ago

Also, you might want to add: filterContext.HttpContext.Response.Cache.SetNoStore(); This will make sure that not even proxy servers keep a copy.

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