TCP socket实现NOSQL

问题：如何使用TCP server实现NoSQL

server side：

      require 'socket'
      module CloudHash
          class Server
              def initialize(port)
                  @server = TCPServer.new(port)
                  puts "Listening on port #{@server.local_address.ip_port}"
                  @storage = {}
              end

              def start
                  Socket.accept_loop(@server) do |connection|
                      handle(connection)
                      connection.close
                  end
              end

              def handle(connection)
                  request = connection.read
                  connection.write process(request)
              end

              def process(request)
                  command, key, value = request.split
                  case command.upcase
                  when 'GET'
                      @storage[key]
                  when 'SET'
                      @storage[key] = value
                  end
              end
          end
      end

      server = CloudHash::Server.new(4481)
      server.start

client side：

      require 'socket'
      module CloudHash
          class Client
              class << self
                  attr_accessor :host, :port
              end

              def self.get(key)
                  request "GET #{key}"
              end

              def self.set(key, value)
                  request "SET #{key} #{value}"
              end

              def self.request(string)
                  @client = TCPSocket.new(host, port)
                  @client.write(string)
                  @client.close_write
                  @client.read
              end
          end
      end

      CloudHash::Client.host = "localhost"
      CloudHash::Client.port = 4481
      CloudHash::Client.set "president", "xijingping"
      puts CloudHash::Client.get "president"

问题： 如何使用TCP server实现NoSQL

问题：如何使用TCP server实现NoSQL