rails/actioncable/CHANGELOG.md

• 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.