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docs(proxy-metrics): add section about metrics expiry - #2151

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anthoturc/proxy-metrics-expiry
Aug 20, 2026
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anthoturc merged 1 commit into
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anthoturc/proxy-metrics-expiry

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@anthoturc

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this commit adds documentation around metric expiry in the linkerd proxy.

some users may have seen that metrics are discarded after 10 minutes. this gotcha wasn't documented previously and has lead to confusion.

the docs in this commit are applied to the edge version of linkerd because the behavior has been around since at least 2.10.

this addresses an ask in linkerd/linkerd2#6222

@cratelyn cratelyn left a comment

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i like this change, it's a great idea to document this property of these legacy metrics.

the docs in this commit are applied to the edge version of linkerd because the behavior has been around since at least 2.10.

if this affects proxies going back to at least 2.10, what do you think of applying this same change to the page in 2.19, 2.18, etc.?

@anthoturc

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if this affects proxies going back to at least 2.10, what do you think of applying this same change to the page in 2.19, 2.18, etc.?

I'm not opposed! I can update those as well.

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anthoturc force-pushed the anthoturc/proxy-metrics-expiry branch from 5ea7b40 to e21b489 Compare August 20, 2026 15:36
@cratelyn

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nice! thank you very much 🙏

@travisbeckham travisbeckham left a comment

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These changes look great!

@anthoturc
anthoturc merged commit 93f0017 into main Aug 20, 2026
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@anthoturc
anthoturc deleted the anthoturc/proxy-metrics-expiry branch August 20, 2026 15:58
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3 participants