You are connecting to Redis v3.0.504, Sidekiq requires Redis v4.0.0 or greater

Question

Redis server is running

Error

sidekiq is not running in our project on my windows machine. Please help to solve these error!

$ bundle exec sidekiq

2020-04-14T12:44:56.654Z pid=12528 tid=59f1k INFO: Booting Sidekiq 6.0.6 with redis options {:url=>"redis://localhost:6379/0", :id=>"Sidekiq-server-PID-12528"}
2020-04-14T12:45:03.044Z pid=12528 tid=59f1k INFO: Booted Rails 6.0.2.2 application in development environment
Signal TTIN not supported
Signal TSTP not supported
Signal USR2 not supported
2020-04-14T12:45:03.044Z pid=12528 tid=59f1k INFO: Running in ruby 2.6.1p33 (2019-01-30 revision 66950) [i386-mingw32]
2020-04-14T12:45:03.045Z pid=12528 tid=59f1k INFO: See LICENSE and the LGPL-3.0 for licensing details.
2020-04-14T12:45:03.045Z pid=12528 tid=59f1k INFO: Upgrade to Sidekiq Pro for more features and support: http://sidekiq.org
You are connecting to Redis v3.0.504, Sidekiq requires Redis v4.0.0 or greater
C:/Ruby26/lib/ruby/gems/2.6.0/gems/sidekiq-6.0.6/lib/sidekiq/cli.rb:62:in `run'
C:/Ruby26/lib/ruby/gems/2.6.0/gems/sidekiq-6.0.6/bin/sidekiq:12:in `<top (required)>'
C:/Ruby26/bin/sidekiq:23:in `load'
C:/Ruby26/bin/sidekiq:23:in `<main>'

Answer 1

As the error message tells you: You are connecting to a redis v3.x instance but your version of sidekiq requires a redis v4 instance, so you need to line them up somehow. This leaves you with two options:

1. Downgrade sidekiq to a version that works with redis v3.x
2. Upgrade redis to v4.x to be able to use the sidekiq version you are currently trying to use

If you go with the first option, sidekiq 5.2.8 should work according to the readme ( https://github.com/mperham/sidekiq/tree/v5.2.8 ). Just update the sidekiq version in your Gemfile and then run bundle update .

gem 'sidekiq', '~> 5.2.8'

If you go with the second option, well... that's OS dependent, but you need to install redis v3.