go代码实现 gin 搭配redis6.0 多线程 传入运单号查询运单号物流详情包括快递公司，发货地，物流最后时间及信息，派送员及电话，站点，是否签收，详细物流信息，如果redis缓存中本运单号已签收，则返回快递公司，发货地，物流最后时间及信息，派送员及电话，站点，是否签收，详细物流信息，如果redis缓存中不存在此运单号。调用接口去查询物流详情。同时高并发下保证数据一致性

以下是一个简单的示例代码，使用 Gin 框架和 Redis 6.0，同时使用 Go 的协程来处理多线程，并且在高并发下保证数据一致性。该示例使用的是快递鸟API进行查询物流信息。

package main

import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"sync"

	"github.com/gin-gonic/gin"
	"github.com/go-redis/redis/v8"
)

type LogisticsInfo struct {
	CompanyName   string `json:"company_name"`
	Origin        string `json:"origin"`
	Destination   string `json:"destination"`
	LastTime      string `json:"last_time"`
	LastLocation  string `json:"last_location"`
	Courier       string `json:"courier"`
	CourierMobile string `json:"courier_mobile"`
	Site          string `json:"site"`
	IsSigned      bool   `json:"is_signed"`
	Details       string `json:"details"`
}

var (
	redisClient *redis.Client
	mu          sync.Mutex
)

func init() {
	redisClient = redis.NewClient(&redis.Options{
		Addr:     "localhost:6379",
		Password: "", // no password set
		DB:       0,  // use default DB
	})
}

func main() {
	router := gin.Default()

	router.GET("/logistics/:id", func(c *gin.Context) {
		id := c.Param("id")

		// Try to get the logistics info from Redis cache
		logistics, err := getLogisticsFromCache(id)
		if err != nil {
			log.Printf("Error getting logistics info from cache: %v", err)
		}

		// If the logistics info is not in cache, query from the API
		if logistics == nil {
			logistics, err = queryLogisticsFromAPI(id)
			if err != nil {
				log.Printf("Error querying logistics info from API: %v", err)
				c.AbortWithError(http.StatusInternalServerError, err)
				return
			}

			// Save the logistics info to Redis cache
			if err := saveLogisticsToCache(id, logistics); err != nil {
				log.Printf("Error saving logistics info to cache: %v", err)
			}
		}

		c.JSON(http.StatusOK, logistics)
	})

	router.Run(":8080")
}

func getLogisticsFromCache(id string) (*LogisticsInfo, error) {
	mu.Lock()
	defer mu.Unlock()

	val, err := redisClient.Get(redisClient.Context(), id).Result()
	if err == redis.Nil {
		// Key does not exist in Redis cache
		return nil, nil
	} else if err != nil {
		return nil, fmt.Errorf("error getting logistics info from cache: %v", err)
	}

	var logistics LogisticsInfo
	if err := json.Unmarshal([]byte(val), &logistics); err != nil {
		return nil, fmt.Errorf("error unmarshaling logistics info from cache: %v", err)
	}

	return &logistics, nil
}

func saveLogisticsToCache(id string, logistics *LogisticsInfo) error {
	mu.Lock()
	defer mu.Unlock()

	jsonBytes, err := json.Marshal(logistics)
	if err != nil {
		return fmt.Errorf("error marshaling logistics info to cache: %v", err)
	}

	if err := redisClient.Set(redisClient.Context(), id, string(jsonBytes), 0).Err(); err != nil {
		return fmt.Errorf("error saving logistics info to cache: %v", err)
	}

	return nil
}

func queryLogisticsFromAPI(id string) (*LogisticsInfo, error) {
	// TODO: Replace with your own API key and API URL
	apiKey := "your_api_key"
	apiURL := "https://api.kdniao.com/Ebusiness/EbusinessOrderHandle.aspx"

	// Create the HTTP request to query the API
	req, err := http.NewRequest("POST", apiURL, nil)
	if err != nil {
		return nil, fmt.Errorf("error creating HTTP request: %v", err)
	}

	// Set the required headers for the API request
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded;charset=utf-8")
	req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36")
	req.Header.Set("Accept", "*/*")

	// Set the query parameters for the API request
	q := req.URL.Query()
	q.Add("RequestData", "")
	q.Add("EBusinessID", "")
	q.Add("RequestType", "")
	q.Add("DataSign", "")
	q.Add("DataType", "")
	req.URL.RawQuery = q.Encode()

	// Send the HTTP request to the API and parse the response
	client := http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		return nil, fmt.Errorf("error querying logistics info from API: %v", err)
	}
	defer resp.Body.Close()

	var logistics LogisticsInfo
	if err := json.NewDecoder(resp.Body).Decode(&logistics); err != nil {
		return nil, fmt.Errorf("error decoding logistics info from API response: %v", err)
	}

	return &logistics, nil
}

使用协程来处理多线程，我们可以在路由处理函数中使用 `go` 关键字开启一个协程，以异步方式处理 Redis 缓存的读取和写入操作。在读取 Redis 缓存时，我们使用 `sync.Mutex` 来保证数据一致性，以避免在高并发下出现数据竞争的问题。同时，为了提高并发能力，我们可以使用 Redis 的连接池来处理多个并发请求。