# 1. Clear retry set

Sidekiq::RetrySet.new.clear

# 2. Clear scheduled jobs

Sidekiq::ScheduledSet.new.clear

# 3. Clear 'Processed' and 'Failed' jobs

Sidekiq::Stats.new.reset

# 3. Clear 'Dead' jobs statistics

Sidekiq::DeadSet.new.clear

# Via API

require 'sidekiq/api'

stats = Sidekiq::Stats.new
stats.queues
stats.queues.each { |q| Sidekiq::Queue.new(q[0]).clear }