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Consider using dnscache for caching DNS requests #111

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bwateratmsft opened this issue Oct 21, 2019 · 1 comment
Open

Consider using dnscache for caching DNS requests #111

bwateratmsft opened this issue Oct 21, 2019 · 1 comment

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@bwateratmsft
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bwateratmsft commented Oct 21, 2019 •
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This came up from microsoft/vscode-docker#1292 originally. It seems like Node.js does DNS lookups every single HTTP request: nodejs/node#5893

Supposedly, this can be resolved by configuring a system-wide DNS cache, or using packages like dnscache.

Can docker-modem make use of that package, or make it an option, in order to reduce DNS traffic in things like the vscode-docker extension?
@bwateratmsft bwateratmsft mentioned this issue Oct 21, 2019
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@karolz-ms
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Another approach is to leverage nodejs/node#9296 to retrieve TTL information about DNS records and not repeat the resolution until the record has expired.

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@karolz-ms @bwateratmsft