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rails--rails/actioncable/CHANGELOG.md
Jonathan Hefner cc9a9e8503 Prevent thundering herd of Action Cable clients 
This commit makes a few changes to the Action Cable client to prevent a
"thundering herd" of client reconnects after server connectivity loss:

* The client will wait a random amount between 1x and 3x of the stale
  threshold after the server's last ping before making the first
  reconnection attempt.
* Subsequent reconnection attempts now use exponential backoff instead
  of logarithmic backoff.  To allow the delay between reconnection
  attempts to increase slowly at first, the default exponentiation base
  is < 2.
* Random jitter is applied to each delay between reconnection attempts.

Co-authored-by: John Williams <john@veloshots.com>
2021-02-02 10:43:05 -06:00

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  • The Action Cable client now includes safeguards to prevent a "thundering herd" of client reconnects after server connectivity loss:

    • The client will wait a random amount between 1x and 3x of the stale threshold after the server's last ping before making the first reconnection attempt.
    • Subsequent reconnection attempts now use exponential backoff instead of logarithmic backoff. To allow the delay between reconnection attempts to increase slowly at first, the default exponentiation base is < 2.
    • Random jitter is applied to each delay between reconnection attempts.

    Jonathan Hefner

Please check 6-1-stable for previous changes.