sortedset类型如何在golang-redis中使用-创新互联
sorted set类型如何在golang-redis中使用?很多新手对此不是很清楚,为了帮助大家解决这个难题,下面小编将为大家详细讲解,有这方面需求的人可以来学习下,希望你能有所收获。
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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)。 集合中较大的成员数为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", //较大分数 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) }
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