controller

type Company struct {
	Symbol    string  `json:"symbol"`
	Company   string  `json:"company"`
	Country   string  `json:"country"`
	MarketCap float64 `json:"marketCap"`
	Rank      int     `json:"rank"`
}

type Controller struct {
	// contains filtered or unexported fields
}

type Redis interface {
	HSet(key, field string, value interface{}) error
	HGetAll(key string) (map[string]string, error)
	ZAdd(key string, member string, score float64) error
	ZRevRange(key string, start, stop int64) ([]*Company, error)
	ZRange(key string, start, stop int64) ([]*Company, error)
	ZScore(key, member string) (float64, error)
	ZIncrBy(key string, increment float64, member string) error
	ZCount(key, min, max string) (int64, error)
}