A key-value store server and client

Three value types: string ,map and list

• string : key value
• map : key elem1,value1,elem2,value2,elem3,value3...
• list : key value1,value2,value3,value4...

• "help","list all directive"
• "select","select db num"
• "set", "set key value"
• "get", "get value by key"
• "exist", "if the key is exist"
• "del", "delete key"
• "cmap", "create a map key"
• "mget", "get value from map key value"
• "clist", "create a list key"
• "lget", "get value from list key value,parm is index"

• Add persistent storage command, periodically write data to disk
• After start server, the server will load data in memory firstly