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jdog
Asked: 2018-10-17 11:03:05 +0800 CST

ExpiresByType "access plus 1 month" results in 1 year expires header

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I have implemented resourec expiry with the following set up

<IfModule mod_expires.c>
    ExpiresActive On
    ExpiresByType image/jpg "access plus 1 year"
    ExpiresByType image/jpeg "access plus 1 year"
    ExpiresByType image/gif "access plus 1 year"
    ExpiresByType image/png "access plus 1 year"
    ExpiresByType text/css "access plus 1 month"
    ExpiresByType application/pdf "access plus 1 month"
    ExpiresByType application/x-javascript "access plus 1 month"
    ExpiresByType text/javascript "access plus 1 month"
    ExpiresByType application/x-shockwave-flash "access plus 1 month"
    ExpiresByType image/x-icon "access plus 1 year"
    ExpiresDefault "access plus 2 days"
</IfModule>

with a2dismod expires, as expected I have no Expires header:

    wget --server-response --no-check-certificate https://sandbox.trinityp3.com/wp-includes/js/jquery/jquery.js?ver=1.12.4
--2018-10-17 07:57:09--  https://sandbox.trinityp3.com/wp-includes/js/jquery/jquery.js?ver=1.12.4
Resolving sandbox.trinityp3.com (sandbox.trinityp3.com)... 52.77.97.226
Connecting to sandbox.trinityp3.com (sandbox.trinityp3.com)|52.77.97.226|:443... connected.
WARNING: cannot verify sandbox.trinityp3.com's certificate, issued by ‘[email protected],CN=sandbox.trinityp3.com,O=Internet Widgits Pty Ltd,ST=Some-State,C=AU’:
  Self-signed certificate encountered.
HTTP request sent, awaiting response... 
  HTTP/1.1 200 OK
  Date: Tue, 16 Oct 2018 18:57:10 GMT
  Server: Apache/2.4.10 (Ubuntu)
  Last-Modified: Tue, 06 Sep 2016 02:32:13 GMT
  Accept-Ranges: bytes
  Content-Length: 97184
  Vary: Accept-Encoding
  Access-Control-Allow-Origin: *
  Referrer-Policy: 
  Cache-Control: max-age=604800, public
  Keep-Alive: timeout=5, max=100
  Connection: Keep-Alive
  Content-Type: application/x-javascript

with a2enmod expires however I do get a 1 year expires response

  wget --server-response --no-check-certificate https://sandbox.trinityp3.com/wp-includes/js/jquery/jquery.js?ver=1.12.4
--2018-10-17 08:01:26--  https://sandbox.trinityp3.com/wp-includes/js/jquery/jquery.js?ver=1.12.4
Resolving sandbox.trinityp3.com (sandbox.trinityp3.com)... 52.77.97.226
Connecting to sandbox.trinityp3.com (sandbox.trinityp3.com)|52.77.97.226|:443... connected.
WARNING: cannot verify sandbox.trinityp3.com's certificate, issued by ‘[email protected],CN=sandbox.trinityp3.com,O=Internet Widgits Pty Ltd,ST=Some-State,C=AU’:
  Self-signed certificate encountered.
HTTP request sent, awaiting response... 
  HTTP/1.1 200 OK
  Date: Tue, 16 Oct 2018 19:01:27 GMT
  Server: Apache/2.4.10 (Ubuntu)
  Last-Modified: Tue, 06 Sep 2016 02:32:13 GMT
  Accept-Ranges: bytes
  Content-Length: 97184
  Vary: Accept-Encoding
  Cache-Control: max-age=604800, public
  Expires: Wed, 16 Oct 2019 19:01:27 GMT
  Access-Control-Allow-Origin: *
  Referrer-Policy: 
  Keep-Alive: timeout=5, max=100
  Connection: Keep-Alive
  Content-Type: application/x-javascript

I have also run grep to find any other expires statements, but there are none.

After adding ExpiresByType application/x-javascript the problem still persists. Could there be a conflict with deflate?

ubuntu@sandbox:/etc/apache2$ grep -r application/x-javascript *
mods-available/deflate.conf:        AddOutputFilterByType DEFLATE     application/x-javascript application/javascript application/ecmascript
sites-available/710-tp3-au-www-sandbox.conf:    ExpiresByType     application/x-javascript "access plus 1 month"
sites-available/710-tp3-au-www-sandbox.conf:    ExpiresByType     application/x-javascript "access plus 1 month"
ubuntu-14.04

1 Answers

  1. You have no ExpiresByType rule for the application/x-javascript Content-Type your .js file is being served as.

    • 2