Squid configuration directive negative_ttl
Available in: v7 v6 v5 v4 3.5 3.4 3.3 3.2 2.7 3.1 3.0 2.6
For older versions than v4 see the linked pages above
Configuration Details:
Option Name: | negative_ttl |
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Replaces: | |
Requires: | --enable-http-violations |
Default Value: | negative_ttl 0 seconds |
Suggested Config: |
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Set the Default Time-to-Live (TTL) for failed requests. Certain types of failures (such as "connection refused" and "404 Not Found") are able to be negatively-cached for a short time. Modern web servers should provide Expires: header, however if they do not this can provide a minimum TTL. The default is not to cache errors with unknown expiry details. Note that this is different from negative caching of DNS lookups. WARNING: Doing this VIOLATES the HTTP standard. Enabling this feature could make you liable for problems which it causes. |
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