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  1. Jul 07, 2022
    • Alex Ellis (OpenFaaS Ltd)'s avatar
      Feature for probing functions · 88eea5f6
      Alex Ellis (OpenFaaS Ltd) authored
      
      Introduces a single-flight call to a function's health
      endpoint to verify that it is registered with an Istio
      sidecar (Envoy) before letting the invocation through.
      
      Results are cached for 5 seconds, before a probe is
      required again.
      
      Tested without Istio, with probe_functions environment
      variable set to true, I saw a probe execute in the logs.
      
      Fixes: #1721 for Istio users.
      
      Signed-off-by: default avatarAlex Ellis (OpenFaaS Ltd) <alex@openfaas.com>
      88eea5f6
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