go使用go-redis操作redis(二)返回类型

Love The Way You Lie 2021-11-30 19:57 834阅读 0赞

返回类型：

1.  BoolCmd
    
    返回bool 值命令， 提供的一些函数：
    
        func NewBoolCmd(args ...interface{}) *BoolCmd
        func NewBoolResult(val bool, err error) *BoolCmd
        func (cmd *BoolCmd) Args() []interface{}
        func (cmd *BoolCmd) Err() error
        func (cmd *BoolCmd) Name() string
        func (cmd *BoolCmd) Result() (bool, error)
        func (cmd *BoolCmd) String() string   返回字符串结果
        func (cmd *BoolCmd) Val() bool    计算， 返回bool
    
    该类主要配合其他方法使用，当返回BoolCmd值可以使用对应的类方法
    
    笔者尝试自定义命令， 但验证结果不是预期的结果，因此不建议自定义使用
    
    例如：
    
        GetBool := func(redisdb *redis.Client, key string) *redis.BoolCmd {
        		cmd := redis.NewBoolCmd("get", key)
        		redisdb.Process(cmd)
        		return cmd
        	}
        	SetBool := func(redisdb *redis.Client, key string, value bool) *redis.BoolCmd {
        		cmd := redis.NewBoolCmd("set", key, value)
        		redisdb.Process(cmd)
        		return cmd
        	}
        	SetBool(client, "dobool", true)
        	v2, err := GetBool(client, "dobool").Result()
        	fmt.Println(v2, err)
    
    输出：
    
        false <nil>
2.  BoolSliceCmd
    
    返回bool的切片结果，是一组结果，一般用于批量命令
3.  CommandsInfoCmd
    
    返回命令信息， 提供命令信息的查询
    
        func NewCommandsInfoCmd(args ...interface{}) *CommandsInfoCmd
        func NewCommandsInfoCmdResult(val map[string]*CommandInfo, err error) *CommandsInfoCmd
        func (cmd *CommandsInfoCmd) Args() []interface{}
        func (cmd *CommandsInfoCmd) Err() error
        func (cmd *CommandsInfoCmd) Name() string
        func (cmd *CommandsInfoCmd) Result() (map[string]*CommandInfo, error)
        func (cmd *CommandsInfoCmd) String() string
        func (cmd *CommandsInfoCmd) Val() map[string]*CommandInfo
    
    例如：
    
        res3 := client.Command().String()
        	fmt.Println(res3)
    
    输出：
    
        command: map[hincrby:0xc04204e800 slaveof:0xc04204ef40 getrange:0xc04204f380 
        zremrangebyscore:0xc04204f600 hmset:0xc04204fe00 lastsave:0xc04204fe40 
        lrem:0xc04204ef00 pfcount:0xc04204fd80 hgetall:0xc0420aa300 
        unsubscribe:0xc0420aa980 mget:0xc0420aaac0 punsubscribe:0xc04204fa80 
        latency:0xc04204e2c0 georadiusbymember:0xc04204e980 lpushx:0xc04204ec40 restore-
        asking:0xc04204eec0 expireat:0xc04204f240 sadd:0xc04204f580 select:0xc04204f5c0 
        llen:0xc0420aa540 auth:0xc0420aa600 rpushx:0xc0420aafc0 eval:0xc04204e780 
        hdel:0xc04204eb00 sdiff:0xc04204ee00 geopos:0xc04204f400 flushdb:0xc0420aa480 
        ....
        zrevrank:0xc04204fa00 append:0xc04204fbc0 geodist:0xc0420aa080]
4.  DurationCmd
    
    过程命令，返回该时间范围中的命令
    
        func NewDurationCmd(precision time.Duration, args ...interface{}) *DurationCmd
        func NewDurationResult(val time.Duration, err error) *DurationCmd
        func (cmd *DurationCmd) Args() []interface{}
        func (cmd *DurationCmd) Err() error
        func (cmd *DurationCmd) Name() string
        func (cmd *DurationCmd) Result() (time.Duration, error)
        func (cmd *DurationCmd) String() string
        func (cmd *DurationCmd) Val() time.Duration
    
    例如：
    
        GetDuration := func(redisdb *redis.Client, value time.Duration) *redis.DurationCmd {
        		cmd := redis.NewDurationCmd(value)
        		redisdb.Process(cmd)
        		return cmd
        	}
        
        	v2Duration, err := GetDuration(client, 500 * time.Millisecond).Result()
        	fmt.Println(v2Duration, err)
    
    输出：
    
        0s read tcp 192.168.137.1:50189->192.168.137.18:6379: i/o timeout
5.  FloatCmd
    
    浮点型类型
    
        func NewFloatCmd(args ...interface{}) *FloatCmd
        func NewFloatResult(val float64, err error) *FloatCmd
        func (cmd *FloatCmd) Args() []interface{}
        func (cmd *FloatCmd) Err() error
        func (cmd *FloatCmd) Name() string
        func (cmd *FloatCmd) Result() (float64, error)
        func (cmd *FloatCmd) String() string
        func (cmd *FloatCmd) Val() float64
6.  GeoLocationCmd
    
    位置信息类型
    
        func NewGeoLocationCmd(q *GeoRadiusQuery, args ...interface{}) *GeoLocationCmd
        func NewGeoLocationCmdResult(val []GeoLocation, err error) *GeoLocationCmd
        func (cmd *GeoLocationCmd) Args() []interface{}
        func (cmd *GeoLocationCmd) Err() error
        func (cmd *GeoLocationCmd) Name() string
        func (cmd *GeoLocationCmd) Result() ([]GeoLocation, error)
        func (cmd *GeoLocationCmd) String() string
        func (cmd *GeoLocationCmd) Val() []GeoLocation
7.  IntCmd
    
    整形
    
        func NewIntCmd(args ...interface{}) *IntCmd
        func NewIntResult(val int64, err error) *IntCmd
        func (cmd *IntCmd) Args() []interface{}
        func (cmd *IntCmd) Err() error
        func (cmd *IntCmd) Name() string
        func (cmd *IntCmd) Result() (int64, error)
        func (cmd *IntCmd) String() string
        func (cmd *IntCmd) Val() int64
8.  IntSliceCmd
    
    整形切片
    
        func NewIntSliceCmd(args ...interface{}) *IntSliceCmd
        func (cmd *IntSliceCmd) Args() []interface{}
        func (cmd *IntSliceCmd) Err() error
        func (cmd *IntSliceCmd) Name() string
        func (cmd *IntSliceCmd) Result() ([]int64, error)
        func (cmd *IntSliceCmd) String() string
        func (cmd *IntSliceCmd) Val() []int64
9.  ScanCmd
    
    分页的命令列表
    
        func NewScanCmd(process func(cmd Cmder) error, args ...interface{}) *ScanCmd
        func NewScanCmdResult(keys []string, cursor uint64, err error) *ScanCmd
        func (cmd *ScanCmd) Args() []interface{}
        func (cmd *ScanCmd) Err() error
        func (cmd *ScanCmd) Iterator() *ScanIterator
        func (cmd *ScanCmd) Name() string
        func (cmd *ScanCmd) Result() (keys []string, cursor uint64, err error)
        func (cmd *ScanCmd) String() string
        func (cmd *ScanCmd) Val() (keys []string, cursor uint64)
10. ScanIterator
    
    返回一个迭代器
    
        func (it *ScanIterator) Err() error
        func (it *ScanIterator) Next() bool
        func (it *ScanIterator) Val() string
11. StatusCmd
    
    命令状态
    
        func NewStatusCmd(args ...interface{}) *StatusCmd
        func NewStatusResult(val string, err error) *StatusCmd
        func (cmd *StatusCmd) Args() []interface{}
        func (cmd *StatusCmd) Err() error
        func (cmd *StatusCmd) Name() string
        func (cmd *StatusCmd) Result() (string, error)
        func (cmd *StatusCmd) String() string
        func (cmd *StatusCmd) Val() string
12. StringCmd
    
    字符串
    
        func NewStringCmd(args ...interface{}) *StringCmd
        func NewStringResult(val string, err error) *StringCmd
        func (cmd *StringCmd) Args() []interface{}
        func (cmd *StringCmd) Bytes() ([]byte, error)
        func (cmd *StringCmd) Err() error
        func (cmd *StringCmd) Float32() (float32, error)
        func (cmd *StringCmd) Float64() (float64, error)
        func (cmd *StringCmd) Int() (int, error)
        func (cmd *StringCmd) Int64() (int64, error)
        func (cmd *StringCmd) Name() string
        func (cmd *StringCmd) Result() (string, error)
        func (cmd *StringCmd) Scan(val interface{}) error
        func (cmd *StringCmd) String() string
        func (cmd *StringCmd) Uint64() (uint64, error)
        func (cmd *StringCmd) Val() string
13. StringIntMapCmd
    
    string 列表
    
        func NewStringIntMapCmd(args ...interface{}) *StringIntMapCmd
        func NewStringIntMapCmdResult(val map[string]int64, err error) *StringIntMapCmd
        func (cmd *StringIntMapCmd) Args() []interface{}
        func (cmd *StringIntMapCmd) Err() error
        func (cmd *StringIntMapCmd) Name() string
        func (cmd *StringIntMapCmd) Result() (map[string]int64, error)
        func (cmd *StringIntMapCmd) String() string
        func (cmd *StringIntMapCmd) Val() map[string]int64
14. StringSliceCmd
    
    string切片
    
        func NewStringSliceCmd(args ...interface{}) *StringSliceCmd
        func NewStringSliceResult(val []string, err error) *StringSliceCmd
        func (cmd *StringSliceCmd) Args() []interface{}
        func (cmd *StringSliceCmd) Err() error
        func (cmd *StringSliceCmd) Name() string
        func (cmd *StringSliceCmd) Result() ([]string, error)
        func (cmd *StringSliceCmd) ScanSlice(container interface{}) error
        func (cmd *StringSliceCmd) String() string
        func (cmd *StringSliceCmd) Val() []string
15. StringStringMapCmd
    
    string的二维数组
    
        func NewStringStringMapCmd(args ...interface{}) *StringStringMapCmd
        func NewStringStringMapResult(val map[string]string, err error) *StringStringMapCmd
        func (cmd *StringStringMapCmd) Args() []interface{}
        func (cmd *StringStringMapCmd) Err() error
        func (cmd *StringStringMapCmd) Name() string
        func (cmd *StringStringMapCmd) Result() (map[string]string, error)
        func (cmd *StringStringMapCmd) String() string
        func (cmd *StringStringMapCmd) Val() map[string]string
16. StringStructMapCmd
    
    string struct数组
    
        func NewStringStructMapCmd(args ...interface{}) *StringStructMapCmd
        func (cmd *StringStructMapCmd) Args() []interface{}
        func (cmd *StringStructMapCmd) Err() error
        func (cmd *StringStructMapCmd) Name() string
        func (cmd *StringStructMapCmd) Result() (map[string]struct{}, error)
        func (cmd *StringStructMapCmd) String() string
        func (cmd *StringStructMapCmd) Val() map[string]struct{}
17. TimeCmd
    
    时间类型， 比如ttl， expire等使用时间的方法的返回值
    
        func NewTimeCmd(args ...interface{}) *TimeCmd
        func (cmd *TimeCmd) Args() []interface{}
        func (cmd *TimeCmd) Err() error
        func (cmd *TimeCmd) Name() string
        func (cmd *TimeCmd) Result() (time.Time, error)
        func (cmd *TimeCmd) String() string
        func (cmd *TimeCmd) Val() time.Time
18. ZSliceCmd
    
    集合
    
        func NewZSliceCmd(args ...interface{}) *ZSliceCmd
        func NewZSliceCmdResult(val []Z, err error) *ZSliceCmd
        func (cmd *ZSliceCmd) Args() []interface{}
        func (cmd *ZSliceCmd) Err() error
        func (cmd *ZSliceCmd) Name() string
        func (cmd *ZSliceCmd) Result() ([]Z, error)
        func (cmd *ZSliceCmd) String() string
        func (cmd *ZSliceCmd) Val() []Z
19. Script
    
    脚本类
    
    脚本执行，检查是否存在，加载等
    
        func NewScript(src string) *Script
        func (s *Script) Eval(c scripter, keys []string, args ...interface{}) *Cmd
        func (s *Script) EvalSha(c scripter, keys []string, args ...interface{}) *Cmd
        func (s *Script) Exists(c scripter) *BoolSliceCmd
        func (s *Script) Hash() string
        func (s *Script) Load(c scripter) *StringCmd
        func (s *Script) Run(c scripter, keys []string, args ...interface{}) *Cmd