redisが佳境に入る(02)Stringとhashタイプ

前回はredisの簡単な紹介を行い、インストール、起動、停止、ログインなどの操作を行いました.次にredisをさらに学びます
サポートされるデータ型のstringとhash.
stringはあまり説明されず、redisに格納されているキー値ペアです.
次のコードを直接入力します.
 

[redies@localhost redis-2.4]$ redis-cli //           redis    
redis 127.0.0.1:6379> set name xiaobaiyang //set       set     
OK //  OK 
redis 127.0.0.1:6379> get name //get     get   
"xiaobaiyang" //    
redis 127.0.0.1:6379> setnx name xiaobaiyang1 //setnx            
(integer) 0 //  name         0 
redis 127.0.0.1:6379> get name 
"xiaobaiyang" //       name     
redis 127.0.0.1:6379> setex age 10 red //setex        10s OK 
redis 127.0.0.1:6379> get age 
"red" 
redis 127.0.0.1:6379> get age //10s age    
(nil) 
redis 127.0.0.1:6379> setnx age 20 //      ，  age        
(integer) 1 
redis 127.0.0.1:6379> get age 
"20" 
redis 127.0.0.1:6379> set mail [email protected] 
OK 
redis 127.0.0.1:6379> setrange mail 6 bbbb//setrange                  
(integer) 21 
redis 127.0.0.1:6379> get mail 
"[email protected]" 
redis 127.0.0.1:6379> mset key1 1 key2 2 key3 3 //mset           
OK 
redis 127.0.0.1:6379> get key1 
"1" 
redis 127.0.0.1:6379> get ke2 
(nil) 
redis 127.0.0.1:6379> get key2 
"2" 
redis 127.0.0.1:6379> get key3 
"3" 
redis 127.0.0.1:6379> msetnx key4 4 //      setnx   
(integer) 1 
redis 127.0.0.1:6379> msetnx key4 key5 
(integer) 0 
redis 127.0.0.1:6379> msetnx key5 5 ket 6 
(integer) 1 
redis 127.0.0.1:6379> get ket 
"6" 
redis 127.0.0.1:6379> getset key5 
55 //    set   "5" 
redis 127.0.0.1:6379> getrange key5 
01 //        (error) ERR wrong number of arguments for 'getrange' command 
redis 127.0.0.1:6379> getrange name 0 6 
"xiaobai" 
redis 127.0.0.1:6379> mget key1 key2 key3 //      
1) "1"
2) "2" 
3) "3" 
redis 127.0.0.1:6379> incr age //   
(integer) 21 
redis 127.0.0.1:6379> incrby age 10 //       
(integer) 31 
redis 127.0.0.1:6379> incrby age -10 
(integer) 21 
redis 127.0.0.1:6379> decr age 10 
(error) ERR wrong number of arguments for 'decr' command 
redis 127.0.0.1:6379> decr age //   (integer) 
20 
redis 127.0.0.1:6379> decrby age 
(error) ERR wrong number of arguments for 'decrby' command 
redis 127.0.0.1:6379> decrby age 
1 //       (integer) 19 
redis 127.0.0.1:6379> append name ... //    name    .... 
(integer) 14 
redis 127.0.0.1:6379> get name 
"xiaobaiyang..." 
redis 127.0.0.1:6379> strlen name //         
(integer) 14 
redis 127.0.0.1:6379> del name //     
(integer) 1 
redis 127.0.0.1:6379> 
redis 127.0.0.1:6379> get name 
(nil) 
redis 127.0.0.1:6379> ============================   hash================= ##hash             ，             ，  Map<map> 
redis 127.0.0.1:6379> hset myhash1 name xiaobaiyang //hset         
(integer) 1 //     
redis 127.0.0.1:6379> hset myhash1 mai [email protected] 
(integer) 1 
redis 127.0.0.1:6379> hget myhash1 name //    hget       
"xiaobaiyang" 
redis 127.0.0.1:6379> hmset myhash1 key1 1 key2 2 //        
OK 
redis 127.0.0.1:6379> hmget myhash1 name mai key1 key2 //        
1) "xiaobaiyang" 
2) "[email protected]" 
3) "1" 
4) "2" 
redis 127.0.0.1:6379> hsetnx myhash1 name xxxx //  setnx 
(integer) 0 
redis 127.0.0.1:6379> hget myhash1 name 
"xiaobaiyang" 
redis 127.0.0.1:6379> hsetnx myhash1 key3 3 
(integer) 1 
redis 127.0.0.1:6379> hget myhash1 key3 
"3" 
redis 127.0.0.1:6379> hset myhash1 age 11 
(integer) 1 
redis 127.0.0.1:6379> hincr myhash1 age //     
(error) ERR unknown command 'hincr' 
redis 127.0.0.1:6379> hincrby myhash1 age 
(error) ERR wrong number of arguments for 'hincrby' command 
redis 127.0.0.1:6379> hincrby myhash1 age 2 //      
(integer) 13 
redis 127.0.0.1:6379> hexists myhash1 age //          
(integer) 1 
redis 127.0.0.1:6379> hexists myhash1 age1 
(integer) 0 
redis 127.0.0.1:6379> hlen myhash1 //         
(integer) 6 
redis 127.0.0.1:6379> hdel myhsh1 //          
(error) ERR wrong number of arguments for 'hdel' command 
redis 127.0.0.1:6379> hdel myhash1 age1 //          
(integer) 0 
redis 127.0.0.1:6379> hexists myhash1 age 
(integer) 1 
redis 127.0.0.1:6379> hkeys myhash1//    keys 
1) "name" 
2) "mai" 
3) "key1" 
4) "key2" 
5) "key3" 
6) "age" 
redis 127.0.0.1:6379> hvals myhs //      
(empty list or set) 
redis 127.0.0.1:6379> hvals myhash1 
1) "xiaobaiyang" 
2) "[email protected]" 
3) "1" 
4) "2" 
5) "3" 
6) "13" 
redis 127.0.0.1:6379> hgetall myhash1 //  key values 
1) "name" 
2) "xiaobaiyang" 
3) "mai" 
4) "[email protected]" 
5) "key1" 
6) "1" 
7) "key2" 
8) "2" 
9) "key3" 
10) "3" 
11) "age" 
12) "13" 
redis 127.0.0.1:6379> quit //