c# cache control for .jpg, .css, .js...

Question

I analyzed my website, and appear this error "No expiration time specified" for files .css, .js, .png, .jpg, etc.

I've found this for php

<IfModule mod_headers.c>
<FilesMatch "\.(jpg|jpeg|png|gif|swf|js|css|swf)$">
    Header set Cache-Control "max-age=604800, public"
</FilesMatch>

What is the equivalence in C#? and, should I code this in web.config?

Thanks in advance.

NutcaseDeveloper · Accepted Answer · 2017-02-13 16:12:24Z

2

You need to set clientCache in staticContent block of your IIS Config.

<system.webServer>
    <staticContent>
      <clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="30.00:00:00" />
    </staticContent>
  </system.webServer>

This sets the expiry for 30 days.

Detailed explaination can be found here.

answered Feb 13, 2017 at 16:12

NutcaseDeveloper

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1 Comment

bpardo Over a year ago

Thank you very much, This work fine! @NutcaseDeveloper

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