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ruby-on-railsredissidekiq

heartbeat: Unsupported command argument type: FalseClass - Redis

I have rails application which is using sidekiq for background jobs. Recently upgraded ruby from 2.7.0 to 3.1.2 and respectively redis gem automatically updated to '5.0.5'. After this sidekiq(6.4.1) logs throws below error, if i revert to old redis version (4.6.0) in my gemlock, there is no error. Any idea what is the reason for this?

Error message: enter image description here

Solution

  • The Redis client for Ruby was recently updated and now checks command argument types strictly. Sidekiq as of 6.4.2 was passing a boolean (in your case FalseClass) in the heartbeat code, which the new Redis client rejected, hence the error. Booleans are invalid because Redis hashes don't support type hints; Redis 4.6 and older would just quietly convert to string.

    Sidekiq has been updated to work with the new Redis client as of 6.5.x. I'm using 6.5.5 and the error is gone:

    gem 'sidekiq', '~> 6.5.5'

    Here's the PR that introduced the fix for reference: https://github.com/mperham/sidekiq/pull/5298