| Index | Alphabetical Index |
Option Name: | refresh_pattern |
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Replaces: | |
Requires: | |
Default Value: | none |
Suggested Config: |
refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 20% 4320 |
usage: refresh_pattern [-i] regex min percent max [options] By default, regular expressions are CASE-SENSITIVE. To make them case-insensitive, use the -i option. 'Min' is the time (in minutes) an object without an explicit expiry time should be considered fresh. The recommended value is 0, any higher values may cause dynamic applications to be erroneously cached unless the application designer has taken the appropriate actions. 'Percent' is a percentage of the objects age (time since last modification age) an object without explicit expiry time will be considered fresh. 'Max' is an upper limit on how long objects without an explicit expiry time will be considered fresh. options: override-expire override-lastmod reload-into-ims ignore-reload ignore-no-cache ignore-private ignore-auth override-expire enforces min age even if the server sent a Expires: header. Doing this VIOLATES the HTTP standard. Enabling this feature could make you liable for problems which it causes. override-lastmod enforces min age even on objects that were modified recently. reload-into-ims changes client no-cache or ``reload'' to If-Modified-Since requests. Doing this VIOLATES the HTTP standard. Enabling this feature could make you liable for problems which it causes. ignore-reload ignores a client no-cache or ``reload'' header. Doing this VIOLATES the HTTP standard. Enabling this feature could make you liable for problems which it causes. ignore-no-cache ignores any ``Pragma: no-cache'' and ``Cache-control: no-cache'' headers received from a server. The HTTP RFC never allows the use of this (Pragma) header from a server, only a client, though plenty of servers send it anyway. ignore-private ignores any ``Cache-control: private'' headers received from a server. Doing this VIOLATES the HTTP standard. Enabling this feature could make you liable for problems which it causes. ignore-auth caches responses to requests with authorization, as if the originserver had sent ``Cache-control: public'' in the response header. Doing this VIOLATES the HTTP standard. Enabling this feature could make you liable for problems which it causes. Basically a cached object is: FRESH if expires < now, else STALE STALE if age > max FRESH if lm-factor < percent, else STALE FRESH if age < min else STALE The refresh_pattern lines are checked in the order listed here. The first entry which matches is used. If none of the entries match the default will be used. Note, you must uncomment all the default lines if you want to change one. The default setting is only active if none is used. Suggested default: |
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