redis-namespace is needed

Gemfile

@@ -2,6 +2,7 @@ source 'https://rubygems.org'
 
 gem 'sinatra'
 gem 'redis'
+gem 'redis-namespace'
 gem 'sequel', '4.8.0'
 gem 'bcrypt'
 gem 'sinatra-flash',      require: 'sinatra/flash'

Gemfile.lock

@@ -136,6 +136,8 @@ GEM
       rack (>= 1.0.0)
     rake (10.5.0)
     redis (3.2.2)
+    redis-namespace (1.5.2)
+      redis (~> 3.0, >= 3.0.4)
     rest-client (1.8.0)
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 3.0)
@@ -262,6 +264,7 @@ DEPENDENCIES
   rack_session_access
   rake
   redis
+  redis-namespace
   rest-client
   rmagick
   ruby-debug

workers/archive_worker.rb

@@ -1,4 +1,5 @@
 require 'sidekiq/api'
+require 'redis-namespace'
 
 class ArchiveWorker
   include Sidekiq::Worker
@@ -13,7 +14,7 @@ class ArchiveWorker
       return
     end
 
-    queue = Sidekiq::Queues[self.class.sidekiq_options_hash['queue']]
+    queue = Sidekiq::Queue.new self.class.sidekiq_options_hash['queue']
     logger.info "JOB ID: #{jid} #{site_id.inspect}"
     queue.each do |job|
       if job.args == [site_id] && job.jid != jid