golang-redis之sorted set类型操作详解
(编辑：jimmy 日期: 2024/11/14 浏览：2)
1：安装redigo
go get github.com/garyburd/redigo/redis
2：引用redigo
import （ "github.com/garyburd/redigo/redis" )
3：连接Redis
c, err := redis.Dial("tcp", "192.168.2.225:6379")
if err != nil {
fmt.Println("connect to redis err", err.Error())
return
}
defer c.Close()
4：命令
n,err := c.Do("zadd","key","score","member") //写
result,err := redis.Values(c.Do("zrange","key",0,-1))//读
5：sorted set简单操作
zadd(key, score1,member1,...scoreN,memberN) 向有序结合添加（更新）一个或多个成员 zcard(key)：获取有序集合的成员 zcount(key,start,end):计算指定区间的成员数 zincrby(key,increment,member):成员member增加increment zinterstore(dst,numkey,src1,src2..srcN)：求交集，并将结果存储新的结合 zlexcount(key,start,end):计算字典区间成员数(分数都相同，按照字典排序) zrange(key,start,end):获取索引区间的成员 zrangebylex (key,start,end):通过字典区间返回区间内有序集合成员 zrangebyscore(key,start,end):通过分数返回区间内的有序集合 zrank (key,member):返回有序结合的索引 zrem(key,members1...membersN):删除一个或多个成员 zremrangebylex(key,start,end):移除集合中给定字典区间的成员 zremrangebyrank(key,start,end):移除有序集合中给定的排名区间的所有成员 zremrangebyscore(key,start,end)：移除给定分数区间的所有元素 zrevange(key,start,end):通过索引，分数由高到低，返回指定区域的元素 zrevrangebyscore(key,member)：分数由高向低返回指定区间的成员数 zrevrank(key,member):分数从小到大，返回指定成员的排名 zscore(key,member):返回有序集中，成员的分数值 zunionstore(dst,numkeys,key1...keyN):返回给定的一个或多个集合的并集，并存储在新的集合中 zscan(key,cursor):迭代有序结合中的元素（包括元素成员和元素分值）
6：示例
6.1：zadd
_, err1 := c.Do("zadd", "curbike", 1, "mobike", 2, "xiaolan", 3, "ofo", 4, "xiaoming")
_, err2 := c.Do("zadd", "tmpdata", 0, "mobike", 0, "xiaolan", 0, "mysql", 0, "redis", 0, "mongo", 0, "xiaoming")
if err1 != nil || err2 != nil {
fmt.Println("zadd failed", err.Error())
}
6.2：zcard
num, err := c.Do("zcard", "curbike")
if err != nil {
fmt.Println("zcard failed", err.Error())
} else {
fmt.Printf("curbike's size is %s:", num)
}
6.3：zcount
num, err = c.Do("zcount", "curbike", 1, 3)
if err != nil {
fmt.Println("zcount failed ", err.Error())
} else {
fmt.Println("zcount num is :", num)
}
6.4：zincrby
num, err = c.Do("zincrby", "curbike", 3, "xiaolan")
fmt.Println(reflect.TypeOf(num))
if err != nil {
fmt.Println("zincrby failed", err.Error())
} else {
fmt.Println("after zincrby the :", num)
}
6.5：zinterstore
_, err = c.Do("zinterstore", "internewset", 2, "curbike", "tmpdata")
if err != nil {
fmt.Println("zinterstore failed", err.Error())
} else {
result, err := redis.Values(c.Do("zrange", "internewset", 0, 10))
if err != nil {
fmt.Println("interstore failed", err.Error())
} else {
fmt.Printf("interstore newset elsements are:")
for _, v := range result {
fmt.Printf("%s ", v.([]byte))
}
fmt.Println()
}
}
6.6：zlexcount
num, err = c.Do("zlexcount", "tmpdata", "[mongo", "[xiaoming")
if err != nil {
fmt.Println("zlexcount failed", err.Error())
} else {
fmt.Println("zlexcount in tmpdata is :", num)
}
6.7：
res, err := redis.Values(c.Do("zrange", "curbike", 0, -1, "withscores"))
if err != nil {
fmt.Println("zrange in curbike failed", err.Error())
} else {
fmt.Printf("curbike's element are follow:")
for _, v := range res {
fmt.Printf("%s ", v.([]byte))
}
fmt.Println()
}
6.8：zrangebylex
res, err = redis.Values(c.Do("zrangebylex", "tmpdata", "[mobike", "[redis"))
if err != nil {
fmt.Println("zrangebylex failed", err.Error())
} else {
fmt.Printf("zrangebylex in tmpdata:")
for _, v := range res {
fmt.Printf("%s ", v.([]byte))
}
fmt.Println()
}
6.9：zrangebyscore
res, err = redis.Values(c.Do("zrangebyscore", "curbike", "(1", "(5"))
if err != nil {
fmt.Println("zrangebyscore failed", err.Error())
} else {
fmt.Printf("zrangebyscore's element:")
for _, v := range res {
fmt.Printf("%s ", v.([]byte))
}
fmt.Println()
}
6.10：zrank
num, err = c.Do("zrank", "internewset", "xiaoming")
if err != nil {
fmt.Println("zrank failed ", err.Error())
} else {
fmt.Println("xiaoming's score is ", num)
}
6.11：
_, err = c.Do("zunionstore", "unewzset", 2, "curbike", "tmpdata")
if err != nil {
fmt.Println("zunionstore failed", err.Error())
} else {
res, err = redis.Values(c.Do("zrange", "unewzset", 0, 10))
if err != nil {
fmt.Println("zunionstore failed", err.Error())
} else {
fmt.Printf("union set are:")
for _, v := range res {
fmt.Printf("%s ", v.([]byte))
}
fmt.Println()
}
}
6.12：zscore
ret, err := c.Do("zscore", "internewset", "xiaolan")
if err != nil {
fmt.Println("zscore failed", err.Error())
} else {
fmt.Printf("curbike 's xiaolan score is:%s\n", ret)
}
6.13：zrevrank
num, err = c.Do("zrevrank", "curbike", "ofo")
if err != nil {
fmt.Println("zrevrank failed", err.Error())
} else {
fmt.Println("ofo's zrevrank is :", num)
}
6.14：zrevrangebyscore
res, err = redis.Values(c.Do("zrevrangebyscore", "unewzset", 10, 2))
if err != nil {
fmt.Println("zrevrangebyscore failed", err.Error())
} else {
fmt.Printf("zrevrangebyscore are:")
for _, v := range res {
fmt.Printf("%s ", v.([]byte))
}
fmt.Println()
}
6.15：zrevrange
res, err = redis.Values(c.Do("zrevrange", "unewzset", 0, 10))
err != nil {
fmt.Println("zrevrange failed：", err.Error())
} else {
fmt.Printf("zrevrange element:")
for _, v := range res {
fmt.Printf("%s ", v.([]byte))
}
fmt.Println()
}
6.16：zrem
num, err = c.Do("zrem", "unewzset", "mysql")
if err != nil {
fmt.Println("zrem failed", err.Error())
} else {
fmt.Println("zrem result is:", num)
}
6.17：zremrangebyrank
num, err = c.Do("zremrangebyrank", "unewzset", 1, 4)
if err != nil {
fmt.Println("zremrangebyrank failed", err.Error())
} else {
fmt.Println("zremrangebyrank result:", num)
}
6.18：zremrangebyscore
num, err = c.Do("zremrangebyscore", "curbike", 2, 5)
if err != nil {
fmt.Println("zremrangebyscore failed", err.Error())
} else {
fmt.Println("zremrangebyscore result:", num)
}
7：示例结果
完整代码路径
补充：go-redis使用之ZSet有序集合
ZSet（sorted set）：有序不重复集合
ZSet的每个元素都会关联一个float64类型的分数。redis正是通过分数来为集合中的成员进行从小到大的排序。
有序集合的成员是唯一的,但分数(score)却可以重复。
集合是通过哈希表实现的，所以添加，删除，查找的复杂度都是O(1)。 集合中最大的成员数为2的32次方 - 1
func GetRedisClient() *redis.Client {
return redis.NewClient(&redis.Options{
Addr: "localhost:6379",
Password: "",
DB: 0,
})
}
// redisZsetTest Zset(sorted set有序不重复集合)
func redisZsetTest(cli *redis.Client){
lang := []redis.Z{
redis.Z{Score: 90.0, Member: "java"},
redis.Z{Score: 80.0, Member: "go"},
redis.Z{Score: 70.0, Member: "python"},
redis.Z{Score: 60.0, Member: "php"},
redis.Z{Score: 50.0, Member: "ruby"},
}
l1:= struct {
Score float64
Member interface{}
}{
40,
"javaScript",
}
//l2 :=redis.Z{
// Score: 30,
// Member: "Object-C",
//}
// 添加一个值
cli.ZAdd("lang",l1)
// 添加多个值
_,err:=cli.ZAdd("lang",lang...).Result()
if err != nil {
panic(err)
}
//升序：查询zset中指定区间的成员,-1代表取到最后
fmt.Println("ZRange:",cli.ZRange("lang",0,3).Val()) //[javaScript ruby php python]
//降序：查询zset中指定区间的成员,-1代表取到最后
fmt.Println("ZRevRange:",cli.ZRevRange("lang",0,-1).Val()) // [java go python php ruby javaScript]
// [Go javaScript ruby php python go java]
opt:=redis.ZRangeBy{
Min: "50", //最小分数
Max: "90", //最大分数
Offset: 2, //在满足条件的范围，从offset下标处开始取值
Count: 3, //查询结果集个数
}
//升序：根据opt条件查询Member成员
fmt.Println(cli.ZRangeByScore("lang",opt).Val()) // [python go java]
//降序：根据opt条件查询Member成员
fmt.Println(cli.ZRevRangeByScore("lang",opt).Val()) //[python php ruby]
//升序:根据下标范围返回的redis.Z结构体切片
fmt.Println(cli.ZRangeWithScores("lang",0,3).Val()) //[{40 javaScript} {50 ruby} {60 php} {70 python}]
//降序：根据下标范围返回的redis.Z结构体切片
fmt.Println(cli.ZRevRangeWithScores("lang",0,-1).Val())//[{90 java} {80 go} {70 python} {60 php} {50 ruby} {40 javaScript}]
//升序：根据opt条件，返回的redis.Z结构体切片
fmt.Println(cli.ZRangeByScoreWithScores("lang",opt).Val())
//降序：根据opt条件，返回的redis.Z结构体切片
fmt.Println(cli.ZRevRangeByScoreWithScores("lang",opt).Val())
fmt.Println(cli.ZRangeByLex("lang",opt).Val())
fmt.Println(cli.ZRevRangeByLex("lang",opt).Val())
// 获取指定成员的score
f:=cli.ZScore("lang","go").Val()
fmt.Println(f) // 80
// 获取指定成员的下标
fmt.Println(cli.ZRank("lang","python").Val()) //3
// 返回指定区间的成员个数
fmt.Println(cli.ZCount("lang","50","80").Val())//4
// 返回集合中成员的个数
fmt.Println(cli.ZCard("lang").Val()) //6
// 根据成员名称，移除指定成员（可以多个): 0:失败 0<：成功
fmt.Println(cli.ZRem("lang","c++").Val())//0
fmt.Println(cli.ZRem("lang","javaScript","java").Val())//2
fmt.Println(cli.ZRange("lang",0,-1).Val()) // [ruby php python go]
// 升序：根据下标区间移除指定成员
fmt.Println(cli.ZRemRangeByRank("lang",1,2).Val()) //2:表示移除了两个
fmt.Println(cli.ZRangeWithScores("lang",0,-1).Val()) // [{50 ruby} {80 go}]
// 升序：根据分数区间移除指定成员
fmt.Println(cli.ZRemRangeByScore("lang","70","90").Val()) //1:表示移除了一个
fmt.Println(cli.ZRangeWithScores("lang",0,-1).Val()) // [{50 ruby}]
}
func main() {
rdb := GetRedisClient()
defer rdb.Close()
pong := rdb.Ping().Val()
fmt.Printf("数据库连接状态：%v\n", pong) // 数据连接状态：PONG
redisZsetTest(rdb)
}
以上为个人经验，希望能给大家一个参考，也希望大家多多支持。如有错误或未考虑完全的地方，望不吝赐教。