Apache crashing when I add Far-Future Expires clause from Rails Guide - ruby-on-rails

Question

In an attempt to serve my precompiled assets with Apache, per this Rails Guide I try to change this:
<VirtualHost *:82>
ServerName localhost
DocumentRoot "C:/RubyStack-3.2.5-0/projects/release_checklist/public"
<Directory "C:/RubyStack-3.2.5-0/projects/release_checklist/public">
Allow from all
Options -MultiViews
</Directory>
ProxyPass / http://localhost:3001/
ProxyPassReverse / http://localhost:3001/
ProxyPreserveHost On
</VirtualHost>
To this:
<VirtualHost *:82>
ServerName localhost
DocumentRoot "C:/RubyStack-3.2.5-0/projects/release_checklist/public"
<Directory "C:/RubyStack-3.2.5-0/projects/release_checklist/public">
Allow from all
Options -MultiViews
</Directory>
ProxyPass / http://localhost:3001/
ProxyPassReverse / http://localhost:3001/
ProxyPreserveHost On
<LocationMatch "^/assets/.*$">
Header unset ETag
FileETag None
# RFC says only cache for 1 year
ExpiresActive On
ExpiresDefault "access plus 1 year"
</LocationMatch>
</VirtualHost>
in my httpd.conf file. However, the Apache server won't start when the second option has been added. What am I doing wrong?

Answer 1

What error does it give you? Are you sure you have mod_expires compiled into apache and that the module is loaded?
Invalid command 'ExpiresActive', perhaps misspelled or defined by a module not included in the server configuration
Yeah, that's usually the error you get if you use a directive that's mapped to a module that isn't loaded (or just a mispelled directive, which appears the same to apache). You'll need to check httpd.conf and make sure the LoadModule expires_module modules/mod_expires.so line is not commented out, of if it's missing, to add it. Depending on your apache's version, the line can be slightly different.