Redis教程

Redis相关操作

本文主要是介绍Redis相关操作，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

String数据类型

命令行

  • 创建获取增减

192.168.1.103:6379> set online-users 50
OK
192.168.1.103:6379> set online-users 100
OK

192.168.1.103:6379> keys *

  1. "online-users"

192.168.1.103:6379> get online-users
"100"

192.168.1.103:6379> incr online-users
(integer) 101
192.168.1.103:6379> decr online-users
(integer) 100

192.168.1.103:6379> incrby online-users 50
(integer) 150
192.168.1.103:6379> incrby online-users -30
(integer) 120
192.168.1.103:6379> decrby online-users -30
(integer) 150

  • 获取value长度

192.168.1.103:6379> strlen online-users
(integer) 3

  • 设置超时时间

192.168.1.103:6379> set 18301581288 3545 ex 300
OK

  • 创建获取删除多个kv

192.168.1.103:6379> mset k1 v1 k2 v2
OK

192.168.1.103:6379> mget k1 k2

  1. "v1"
  2. "v2"

192.168.1.103:6379> del k1 k2
(integer) 2

API

import redis.clients.jedis.Jedis

object StringValue {
  def main(args: Array[String]): Unit = {

    val jedis: Jedis = new Jedis("192.168.1.103", 6379)
    jedis.auth("root")
    // 选择使用的database, 公有16个, 默认使用0号database
//    jedis.select(0)

    jedis.set("online-users", "100")
    val r1 = jedis.get("online-users")
    println(r1)

    jedis.incrBy("online-users", 50)
    val r2 = jedis.get("online-users")
    println(r2)
      
    jedis.del("online-users")
  }
}

Hash数据类型

命令行

  • 创建获取

192.168.1.103:6379> hset Aang age 12
(integer) 1
192.168.1.103:6379> hget Aang age
"12"

  • 增减

192.168.1.103:6379> hincrby Aang age 3
(integer) 15

  • 删除value中的key

192.168.1.103:6379> hdel Aang age
(integer) 1

  • 删除key

192.168.1.103:6379> del Aang
(integer) 0

  • 创建获取多个

192.168.1.103:6379> hmset Aang name Aang age 12 gender male
OK
192.168.1.103:6379> hmget Aang name age gender

  1. "Aang"
  2. "12"
  3. "male"
    192.168.1.103:6379> hgetall Aang
  4. "name"
  5. "Aang"
  6. "age"
  7. "12"
  8. "gender"
  9. "male"
  • 判断字段是否存在

192.168.1.103:6379> hexists Aang name
(integer) 1
192.168.1.103:6379> hexists Aang grade
(integer) 0

  • 只获取keys或values

192.168.1.103:6379> hkeys Aang

  1. "name"
  2. "age"
  3. "gender"
    192.168.1.103:6379> hvals Aang
  4. "Aang"
  5. "12"
  6. "male"
  • 获取长度

192.168.1.103:6379> hlen Aang
(integer) 3

API

import java.util

import redis.clients.jedis.Jedis

object HashValue {
  def main(args: Array[String]): Unit = {

    val jedis: Jedis = new Jedis("192.168.1.103", 6379)
    jedis.auth("root")

    jedis.hset("sichuan", "chengdu", "1000")
    jedis.hset("sichuan", "yaan", "1000")

    jedis.hincrByFloat("sichuan", "yaan", 500.5)

    val str: String = jedis.hget("sichuan", "yaan")
    println(str)

    val all: util.Map[String, String] = jedis.hgetAll("sichuan")

    // jeids由java编写, 取出的是java集合
    import scala.collection.JavaConversions._
    for(t <- all){
      println(s"key: ${t._1} -> value: ${t._2}")
    }

    jedis.hdel("sichuan", "yaan")
      
    jedis.del("sichuan")
  }
}

List数据类型

命令行

  • 插入数据

192.168.1.103:6379> lpush lst1 1 2 3
(integer) 3
192.168.1.103:6379> rpush lst1 a b c
(integer) 6

  • 获取数据

192.168.1.103:6379> lrange lst1 0 -1

  1. "3"
  2. "2"
  3. "1"
  4. "a"
  5. "b"
  6. "c"
    192.168.1.103:6379> lrange lst1 1 3
  7. "2"
  8. "1"
  9. "a"
  • 弹出 (删除) 数据

192.168.1.103:6379> lpop lst1
"3"
192.168.1.103:6379> rpop lst1
"c"
192.168.1.103:6379> lrange lst1 0 -1

  1. "2"
  2. "1"
  3. "a"
  4. "b"
  • 获取长度

192.168.1.103:6379> llen lst1
(integer) 4

API

import java.util

import redis.clients.jedis.Jedis

object ListValue {
  def main(args: Array[String]): Unit = {

    val jedis: Jedis = new Jedis("192.168.1.103", 6379)
    jedis.auth("root")

    jedis.lpush("lst1", "1", "2", "3")
    jedis.rpush("lst1", "a", "b", "c")

    jedis.lpop("lst1")
    jedis.rpop("lst1")

    val strings: util.List[String] = jedis.lrange("lst1", 0, -1)

    import scala.collection.JavaConversions._
    for(s <- strings){
      println(s)
    }
  }
}

Set数据类型

命令行

  • 创建

192.168.1.103:6379> sadd s1 1 3 3 5 a b c
(integer) 6

  • 获取

192.168.1.103:6379> smembers s1

  1. "a"
  2. "5"
  3. "3"
  4. "1"
  5. "c"
  6. "b"
  • 删除

192.168.1.103:6379> srem s1 3
(integer) 1

  • 判断是否存在

192.168.1.103:6379> sismember s1 3
(integer) 0
192.168.1.103:6379> sismember s1 5
(integer) 1

  • 差集, 交集, 并集

192.168.1.103:6379> sadd s1 1 2 3
(integer) 3
192.168.1.103:6379> sadd s2 2 3 4
(integer) 3
192.168.1.103:6379> sdiff s1 s2

  1. "1"
    192.168.1.103:6379> sinter s1 s2
  2. "2"
  3. "3"
    192.168.1.103:6379> sunion s1 s2
  4. "1"
  5. "2"
  6. "3"
  7. "4"

API

import java.util

import redis.clients.jedis.Jedis

object SetValue {
  def main(args: Array[String]): Unit = {

    val jedis: Jedis = new Jedis("192.168.1.103", 6379)
    jedis.auth("root")

    jedis.sadd("s1", "1", "2", "3", "3", "5")


    jedis.srem("s1", "2")

    val boolean = jedis.sismember("s1", "2")
    println(boolean)

    val strings: util.Set[String] = jedis.smembers("s1")

    import scala.collection.JavaConversions._
    for(s <- strings){
      println(s)
    }
  }
}

ZSet数据类型

命令行

  • 创建获取

192.168.1.103:6379> zadd z1 90 Aang 85 Katara 75 Sokka
(integer) 3
192.168.1.103:6379> zrange z1 0 -1

  1. "Sokka"
  2. "Katara"
  3. "Aang"
    192.168.1.103:6379> zrange z1 0 -1 withscores
  4. "Sokka"
  5. "75"
  6. "Katara"
  7. "85"
  8. "Aang"
  9. "90"
    192.168.1.103:6379> zrevrange z1 0 -1
  10. "Aang"
  11. "Katara"
  12. "Sokka"
  • 增减score

192.168.1.103:6379> zincrby z1 10 Katara
"95"
192.168.1.103:6379> zrange z1 0 -1 withscores

  1. "Sokka"
  2. "75"
  3. "Aang"
  4. "90"
  5. "Katara"
  6. "95"
  • 获取元素排名

192.168.1.103:6379> zrank z1 Katara
(integer) 2

192.168.1.103:6379> zrevrank z1 Katara
(integer) 0

API

import java.{lang, util}

import redis.clients.jedis.{Jedis, Tuple}

object ZSetValue {
  def main(args: Array[String]): Unit = {

    val jedis: Jedis = new Jedis("192.168.1.103", 6379)
    jedis.auth("root")

    jedis.zadd("z1", 90, "Aang")
    jedis.zadd("z1", 85, "Katara")
    jedis.zadd("z1", 75, "Sokka")

    jedis.zincrby("z1", 10, "Katara")


    val tuples: util.Set[Tuple] = jedis.zrangeWithScores("z1", 0, -1)

    import scala.collection.JavaConversions._
    for(t <- tuples){
      println(t)
    }

    val long: lang.Long = jedis.zrank("z1", "Katara")
    println(long)
  }
}
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