REDIS hash 基本操作

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1. C:\Users\none\Desktop
   
2. $ redis-cli
   
3. 
   
4. 
   
5. ### 获取所有键
   
6. 127.0.0.1:6379> keys *
   
7. (empty list or set)
   
8. 
   
9. 
   
10. ### 设置哈希键值对
    
11. 127.0.0.1:6379> hset myinfo age 35
    
12. (integer) 1
    
13. 127.0.0.1:6379> hset myinfo name daniel
    
14. (integer) 1
    
15. 127.0.0.1:6379> hset myinfo salary 20000
    
16. (integer) 1
    
17. 
    
18. 
    
19. ### 获取指定字段的值
    
20. 127.0.0.1:6379> hget myinfo age
    
21. "35"
    
22. 127.0.0.1:6379> hget myinfo name
    
23. "daniel"
    
24. 127.0.0.1:6379> hget myinfo salary
    
25. "20000"
    
26. 
    
27. 
    
28. ### 获取所有键值对
    
29. 127.0.0.1:6379> hgetall myinfo
    
30. 1) "age"
    
31. 2) "35"
    
32. 3) "name"
    
33. 4) "daniel"
    
34. 5) "salary"
    
35. 6) "20000"
    
36. 
    
37. 
    
38. ### 一次性设置多个键值对
    
39. 127.0.0.1:6379> hmset myinfo1 age1 40 name1 lucy salary 10000
    
40. OK
    
41. 
    
42. 
    
43. ### 获取多个字段的值
    
44. 127.0.0.1:6379> hmget myinfo1 age1 name1 salary
    
45. 1) "40"
    
46. 2) "lucy"
    
47. 3) "10000"
    
48. 
    
49. 
    
50. ### 获取hash的键值对长度
    
51. 127.0.0.1:6379> hlen myinfo1
    
52. (integer) 3
    
53. 
    
54. 
    
55. ### 删除指定键值对
    
56. 127.0.0.1:6379> hdel myinfo1 age1
    
57. (integer) 1
    
58. 
    
59. 
    
60. ### hash的键值对长度现在变成两个了
    
61. 127.0.0.1:6379> hlen myinfo1
    
62. (integer) 2
    
63. 
    
64. 
    
65. ### 删除后hash的键值对中的一个变成了空值
    
66. 127.0.0.1:6379> hmget myinfo1 age1 name1 salary
    
67. 1) (nil)
    
68. 2) "lucy"
    
69. 3) "10000"
    
70. 127.0.0.1:6379>

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### 其他redis hash操作链接
https://www.runoob.com/redis/redis-hashes.html

### python操作redis hash
https://www.cnblogs.com/bigberg/p/8287948.html