为什么我要使用 unicorn 或 Thin 而不是 WEBrick 进行开发

为什么我要使用 Unicorn 或 Thin 而不是 WEBrick 进行开发？

ruby
# Gemfile
gem 'unicorn'
# config/unicorn.rb
worker_processes 4 # 进程数，可以根据服务器性能进行调整
timeout 15         # 请求超时时间，单位为秒
preload_app true    # 启用预加载应用，提高性能
before_fork do |server, worker|
  Signal.trap 'TERM' do
    puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
    Process.kill 'QUIT', Process.pid
  end
  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.connection.disconnect!
end
after_fork do |server, worker|
  Signal.trap 'TERM' do
    puts 'Unicorn worker intercepting TERM and doing nothing. Wait for master to send QUIT'
  end
  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.establish_connection
end

ruby
# Gemfile
gem 'thin'
# config/thin.yml
---
chdir: /path/to/your/rails/app
environment: production
address: 0.0.0.0
port: 3000
timeout: 30
log: log/thin.log
pid: tmp/pids/thin.pid
max_conns: 1024
max_persistent_conns: 512
require: []
wait: 30
servers: 1