Squid 配置指令 negative_ttl
可用版本:
此指令在 Squid 的 v8 版本中不可用。
对于 v5 之前的旧版本，请参阅以上链接页面。
配置详情
| 选项名称 | negative_ttl |
|---|---|
| 替代 | |
| 要求 | --enable-http-violations |
| 默认值 | negative_ttl 0 秒 |
| 建议配置 |
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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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