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[Feature Request] DNS Negative cache #669

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9bingyin opened this issue Oct 4, 2024 · 3 comments
Open

[Feature Request] DNS Negative cache #669

9bingyin opened this issue Oct 4, 2024 · 3 comments
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@9bingyin
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9bingyin commented Oct 4, 2024

Greetings

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Feature Request

DNS Negative cache

Use Cases

可以给 NXDOMAIN 和 NODATA 的结果增加一个缓存，例如 300s（或遵循 SOA record）

Potential Benefits

这样在服务器返回 NXDOMAIN 和 NODATA 的结果时就可以缓存下来，防止一些程序一直重复解析不存在的域名从而消耗上游 DNS 的资源
@dae-prow
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dae-prow bot commented Oct 4, 2024

Thanks for opening this issue!

@mzz2017
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mzz2017 commented Oct 5, 2024

@9bingyin 还需要一些 rfc 资料佐证讨论这种行为是否可靠

@9bingyin
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9bingyin commented Oct 5, 2024 •
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RFC 2308 对这种行为有详细的说明
AdGuard Home 也在 2 年前支持了这个特性，AdguardTeam/AdGuardHome#3707 ，并且似乎是默认开启的

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@mzz2017 @9bingyin