大数据开发系列之Redis

2020-03-31 本文已影响0人简简天天

nosql和sql的区别

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Redis概念

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Redis特点

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Redis的优势

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Redis的适用场景

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Redis的安装

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Redis数据类型

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List应用场景

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127.0.0.1:6379> sadd myset a b c
(integer) 3
127.0.0.1:6379> smembers myset
1) "b"
2) "a"
3) "c"
127.0.0.1:6379> sadd myset a d
(integer) 1
127.0.0.1:6379> smembers myset
1) "b"
2) "a"
3) "d"
4) "c"
127.0.0.1:6379> sismember myset e
(integer) 0
127.0.0.1:6379> sismemeber myset d
(error) ERR unknown command `sismemeber`, with args beginning with: `myset`, `d`, 
127.0.0.1:6379> sismember myset d
(integer) 1
127.0.0.1:6379> srem myset d
(integer) 1
127.0.0.1:6379> sadd myset1 1 2 3
(integer) 3
127.0.0.1:6379> sinter myset myset1
(empty list or set)
127.0.0.1:6379> smembers mset1
(empty list or set)
127.0.0.1:6379> sadd myset1 A B
(integer) 2
127.0.0.1:6379> smemebers mset1
(error) ERR unknown command `smemebers`, with args beginning with: `mset1`, 
127.0.0.1:6379> smembers mset1
(empty list or set)
127.0.0.1:6379> smembers myset1
1) "A"
2) "3"
3) "2"
4) "1"
5) "B"
127.0.0.1:6379> srem myset1 1 2 3
(integer) 3
127.0.0.1:6379> sinter myset myset1
(empty list or set)
127.0.0.1:6379> sunion myset myset1
1) "b"
2) "a"
3) "B"
4) "c"
5) "A"
127.0.0.1:6379> sdiff myset myset1
1) "b"
2) "a"
3) "c"
127.0.0.1:6379> sdiff myset1 myset
1) "A"
2) "B"
127.0.0.1:6379> sunionstore myset2 myset myset1
(integer) 5
127.0.0.1:6379> smembers myset2
1) "b"
2) "a"
3) "B"
4) "c"
5) "A"
127.0.0.1:6379> type myset
set

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sorted set

127.0.0.1:6379> zadd myzset 1 a 2 b
(integer) 2
127.0.0.1:6379> zrange myzset 0 -1
1) "a"
2) "b"
127.0.0.1:6379> zrevrange myzset 0 -1
1) "b"
2) "a"
127.0.0.1:6379> zincrby myzset 10 a
"11"
127.0.0.1:6379> zrange myzset 0 -1
1) "b"
2) "a"

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hash

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127.0.0.1:6379> hset scores english 100
(integer) 1
127.0.0.1:6379> hset scores math 110
(integer) 1
127.0.0.1:6379> hkeys scores
1) "english"
2) "math"
127.0.0.1:6379> hget scores math
"110"
127.0.0.1:6379> hmget english math
1) (nil)
127.0.0.1:6379> hmget scores english math
1) "100"
2) "110"
127.0.0.1:6379> hgetall scores
1) "english"
2) "100"
3) "math"
4) "110"

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127.0.0.1:6379> hset user1 phone 1
(integer) 1
127.0.0.1:6379> hset user1 book 2
(integer) 1
127.0.0.1:6379> hset user2 phone 1
(integer) 1
127.0.0.1:6379> hgetall user1
1) "phone"
2) "1"
3) "book"
4) "2"

127.0.0.1:6379> set abc 123
OK
127.0.0.1:6379> ttl abc
(integer) -1
127.0.0.1:6379> expire abc 100
(integer) 1
127.0.0.1:6379> ttl abc
(integer) 94
127.0.0.1:6379> ttl abc
(integer) 88
127.0.0.1:6379> persist abc
(integer) 1
127.0.0.1:6379> ttl abc
(integer) -1