3 ms·

And there's a standard for it: https://www.w3.org/TR/trace-context/ https://www.w3.org/TR/trace-context/ Many libraries and tools support the standard now.

• tombert 5y ago
  And now I feel embarrassed for not knowing about this...Thanks for the link!
  • wainstead 5y ago
    Don't, I only learned about it recently, and the standard itself is quite young!