micrometer-metrics/micrometer

DNS, SSL, and TCP metrics for Apache HttpClient

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#1,617 opened on 2019年10月1日

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 (5 comments) (0 reactions) (1 assignee)Java (4,220 stars) (935 forks)batch import
enhancementhelp wantedinstrumentationmodule: micrometer-core

説明

Add metrics for:

  1. DNS resolution time (inject custom DnsResolver, delegating to the user-provided resolver, and timing).
  2. SSL handshake time (inject SSLConnectionSocketFactory, delegating).
  3. TCP connect time (also in custom SSLConnectionSocketFactory).

Apply these on custom PoolingHttpClientConnectionManager.

Feedback suggests that DNS resolution/SSL handshake can go up dramatically in noisy neighbor situations.

Originally posted by @jkschneider in https://github.com/micrometer-metrics/micrometer/issues/533#issuecomment-446713248

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