rails--rails/actioncable/CHANGELOG.md

Rails 7.0.0.alpha2 (September 15, 2021)

• No changes.

Rails 7.0.0.alpha1 (September 15, 2021)

• Compile ESM package that can be used directly in the browser as actioncable.esm.js.

  DHH

• Move action_cable.js to actioncable.js to match naming convention used for other Rails frameworks, and use JS console to communicate the deprecation.

  DHH

• Stop transpiling the UMD package generated as actioncable.js and drop the IE11 testing that relied on that.

  DHH

• Truncate broadcast logging messages.

  J Smith

• OpenSSL constants are now used for Digest computations.

  Dirkjan Bussink

• 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.