kwarg issue with Rails 8.1

[taylorthurlow]

This happens when calling perform_async.

ArgumentError:
       unknown keyword: :name
     # /Users/taylorthurlow/.rbenv/versions/3.4.7/lib/ruby/gems/3.4.0/gems/connection_pool-3.0.1/lib/connection_pool.rb:48:in 'initialize'
     # /Users/taylorthurlow/.rbenv/versions/3.4.7/lib/ruby/gems/3.4.0/gems/sidekiq-7.3.9/lib/sidekiq/redis_connection.rb:34:in 'Class#new'
     # /Users/taylorthurlow/.rbenv/versions/3.4.7/lib/ruby/gems/3.4.0/gems/sidekiq-7.3.9/lib/sidekiq/redis_connection.rb:34:in 'Sidekiq::RedisConnection.create'
     # /Users/taylorthurlow/.rbenv/versions/3.4.7/lib/ruby/gems/3.4.0/gems/sidekiq-7.3.9/lib/sidekiq/config.rb:151:in 'Sidekiq::Config#new_redis_pool'
     # /Users/taylorthurlow/.rbenv/versions/3.4.7/lib/ruby/gems/3.4.0/gems/sidekiq-7.3.9/lib/sidekiq/config.rb:145:in 'Sidekiq::Config#local_redis_pool'

Potentially related to the fact that we're still using Sidekiq 7, still behind on the 8.x transition due to the change in redis version requirements.

[mperham]

Fixed on main, release coming today.

[excid3]

mem_cache_store gives an argument error because it doesn't splat the args in Rails 8.1.

ArgumentError: wrong number of arguments (given 1, expected 0) (ArgumentError)
/home/deploy/gorails/shared/bundle/ruby/3.4.0/gems/connection_pool-3.0.2/lib/connection_pool.rb:48:in 'initialize'
/home/deploy/gorails/shared/bundle/ruby/3.4.0/gems/activesupport-8.1.1/lib/active_support/cache/mem_cache_store.rb:62:in 'Class#new'

Rails main does splat the args.

[jtarchie]

I just updated to v3.0.2, and it does not work. I get the same error as @excid3 above.

It appears that for this to work, to following changes need to be made.

In activesupport-8.0.4/lib/active_support/cache/redis_cache_store.rb:

@redis = ::ConnectionPool.new(pool_options) { self.class.build_redis(**redis_options) }

Need to become:

@redis = ::ConnectionPool.new(**pool_options) { self.class.build_redis(**redis_options) }

For keywords args to work correctly, I've only verified it locally.

[choznerol]

In activesupport-8.0.4/lib/active_support/cache/redis_cache_store.rb:

@redis = ::ConnectionPool.new(pool_options) { self.class.build_redis(**redis_options) }

Need to become:

@redis = ::ConnectionPool.new(**pool_options) { self.class.build_redis(**redis_options) }

If you came to this issue for ArgumentError: wrong number of arguments (given 1, expected 0) (ArgumentError) from Rails, fatkodima fixed it with https://github.com/rails/rails/pull/56292 on 2025-12-05.

[taylorthurlow]

3.0.2 solved the issue for me, but it looks like there are a decent number of similar issues depending on what Ruby and Sidekiq version you're on, so I'll leave it to Mike to close this at his discretion.

[jurgens]

having this issue with memcache

bin/rails aborted!
ArgumentError: wrong number of arguments (given 1, expected 0) (ArgumentError)
/app/vendor/bundle/ruby/3.4.0/gems/connection_pool-3.0.2/lib/connection_pool.rb:48:in 'initialize'
/app/vendor/bundle/ruby/3.4.0/gems/activesupport-8.1.1/lib/active_support/cache/mem_cache_store.rb:62:in 'Class#new'
/app/vendor/bundle/ruby/3.4.0/gems/activesupport-8.1.1/lib/active_support/cache/mem_cache_store.rb:62:in 'ActiveSupport::Cache::MemCacheStore.build_mem_cache'
/app/vendor/bundle/ruby/3.4.0/gems/activesupport-8.1.1/lib/active_support/cache/mem_cache_store.rb:93:in 'ActiveSupport::Cache::MemCacheStore#initialize'
/app/vendor/bundle/ruby/3.4.0/gems/activesupport-8.1.1/lib/active_support/cache.rb:91:in 'Class#new'
/app/vendor/bundle/ruby/3.4.0/gems/activesupport-8.1.1/lib/active_support/cache.rb:91:in 'ActiveSupport::Cache.lookup_store'
/app/vendor/bundle/ruby/3.4.0/gems/railties-8.1.1/lib/rails/application/bootstrap.rb:85:in 'block in <module:Bootstrap>'
/app/vendor/bundle/ruby/3.4.0/gems/railties-8.1.1/lib/rails/initializable.rb:24:in 'BasicObject#instance_exec'
/app/vendor/bundle/ruby/3.4.0/gems/railties-8.1.1/lib/rails/initializable.rb:24:in 'Rails::Initializable::Initializer#run'
/app/vendor/bundle/ruby/3.4.0/gems/railties-8.1.1/lib/rails/initializable.rb:103:in 'block in Rails::Initializable#run_initializers'