Asp.net-core – Apply a browser caching policy to all ASP.NET Core MVC pages

asp.net-corebrowser-cachecache-control

I'd like to tell ASP.NET Core to add a common Cache-Control and related headers to all responses served by MVC controllers, both HTML pages and Web API responses. I don't want the policy to apply to cache static files; those I want to be cached.

In particular case, I want to disable caching, the equivalent of applying this attribute to all controllers:

[ResponseCache(NoStore = true, Location = ResponseCacheLocation.None)]

I could made a base controller with this attribute and derive all other controllers from it. I was wondering if there is a configuration-based approach that avoids the need for such a base controller.

Best Answer

You can do it w/o middleware just by adding

services.AddMvc(options => {
    options.Filters.Add(new ResponseCacheAttribute() { NoStore = true, Location = ResponseCacheLocation.None });
})

in your ConfigureServices method. Works with any Attribute (i.e AuthorizeAttribute), which can be instantiated and will be applied to all controllers and actions. Also no need for a base class.

Related Solutions

Difference between no-cache and must-revalidate

I believe that must-revalidate means :

Once the cache expires, refuse to return stale responses to the user even if they say that stale responses are acceptable.

Whereas no-cache implies :

must-revalidate plus the fact the response becomes stale right away.

If a response is cacheable for 10 seconds, then must-revalidate kicks in after 10 seconds, whereas no-cache implies must-revalidate after 0 seconds.

At least, that's my interpretation.

Asp.net-core – How to cache css,js or images files to asp.net core

app.UseStaticFiles(new StaticFileOptions()
{
    OnPrepareResponse =
        r =>
        {
            string path = r.File.PhysicalPath;
            if (path.EndsWith(".css") || path.EndsWith(".js") || path.EndsWith(".gif") || path.EndsWith(".jpg") || path.EndsWith(".png") || path.EndsWith(".svg"))
            {
                TimeSpan maxAge = new TimeSpan(7, 0, 0, 0);
                r.Context.Response.Headers.Append("Cache-Control", "max-age=" + maxAge.TotalSeconds.ToString("0"));
            }
        }
});

Best Answer

Related Solutions

Difference between no-cache and must-revalidate

Asp.net-core – How to cache css,js or images files to asp.net core

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