jyMicroservices/jyBXBuyer/rpc/model/util.go

package model

import (
	"app.yhyue.com/moapp/jybase/redis"
	"fmt"
	"math/rand"
	"strings"
	"time"
)

func GetRand(n int) int {
	randGen := rand.New(rand.NewSource(time.Now().UnixNano()))
	// 获取一个范围在 [0, ) 的随机整数
	return randGen.Intn(n)
}

// SaveHistory 保存历史记录
func SaveHistory(matchKey string, userId string, redisKey string) bool {
	redisKey = fmt.Sprintf(redisKey, userId)
	history := redis.GetStr("other", redisKey)
	arrS := []string{}
	arrS = strings.Split(history, ",")
	//新增历史记录
	if history == "" {
		arrS = make([]string, 0)
	}
	for k, v := range arrS {
		if v == strings.TrimSpace(matchKey) {
			arrS = append(arrS[:k], arrS[k+1:]...)
			break
		}
	}

	arrS = append(arrS, strings.TrimSpace(matchKey))
	if len(arrS) > 10 {
		arrS = arrS[len(arrS)-10:]
	}
	return redis.Put("other", redisKey, strings.Join(arrS, ","), -1)
}