彬哥笔记 --16 Go语言 游戏服务器缓存库举例

      大家好，我是彬哥，本节给大家讲下go语言服务器游戏缓存处理相关，抛砖引玉了，主要是针对Go语言游戏服务器开发缓存如何处理。
首选我们来看下LollipopGo v1.0.20190104 版本的处理，缓存使用cache2go;
github地址

官方代码例子如下：

package main

import (
    "github.com/muesli/cache2go"
    "fmt"
    "time"
)
// Keys & values in cache2go can be of arbitrary types, e.g. a struct.
type myStruct struct {
    text     string
    moreData []byte
}
func main() {
    // Accessing a new cache table for the first time will create it.
    cache := cache2go.Cache("myCache")
    // We will put a new item in the cache. It will expire after
    // not being accessed via Value(key) for more than 5 seconds.
    val := myStruct{"This is a test!", []byte{}}
    cache.Add("someKey", 5*time.Second, &val)
    // Let's retrieve the item from the cache.
    res, err := cache.Value("someKey")
    if err == nil {
        fmt.Println("Found value in cache:", res.Data().(*myStruct).text)
    } else {
        fmt.Println("Error retrieving value from cache:", err)
    }
    // Wait for the item to expire in cache.
    time.Sleep(6 * time.Second)
    res, err = cache.Value("someKey")
    if err != nil {
        fmt.Println("Item is not cached (anymore).")
    }
    // Add another item that never expires.
    cache.Add("someKey", 0, &val)
    // cache2go supports a few handy callbacks and loading mechanisms.
    cache.SetAboutToDeleteItemCallback(func(e *cache2go.CacheItem) {
        fmt.Println("Deleting:", e.Key(), e.Data().(*myStruct).text, e.CreatedOn())
    })
    // Remove the item from the cache.
    cache.Delete("someKey")
    // And wipe the entire cache table.
    cache.Flush()
}

社区测试修改缓存例子，代码如下：

package main

import (
    "cache2go"
    "fmt"
)

var cache *cache2go.CacheTable
var SaveChessData map[int]*GolangLtd

type GolangLtd struct {
    RoomUID   int
    PlayerA   string
    PlayerB   string
    Default   [4][4]int
    ChessData [4][4]int
}

func init() {
    cache = cache2go.Cache("myCache")
    SaveChessData = make(map[int]*GolangLtd)
    return
}

//------------------------------------------------------------------------------

func main() {

    data11 := []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}
    data1 := [4][4]int{{17, 17, 17, 17}, {17, 17, 17, 17}, {17, 17, 17, 17}, {17, 17, 17, 17}}
    re := InitDSQ(data11)

    data := &GolangLtd{
        RoomUID:   1,
        PlayerB:   "987654321",
        Default:   data1,
        ChessData: re,
    }

    SaveChessData[1] = data
    // 保存数据
    cache.Add(111, 0, data)
    // 获取数据
    res, err1 := cache.Value(111)
    if err1 != nil {
        fmt.Println(err1)
        return
    }
    //--------------------------------------------------------------------------
    fmt.Println("result:", res.Data().(*GolangLtd).RoomUID)
    res.Data().(*GolangLtd).RoomUID = 2
    fmt.Println("result:", res.Data().(*GolangLtd).RoomUID)
    //--------------------------------------------------------------------------
    fmt.Println("result:", res.Data().(*GolangLtd).Default)
    fmt.Println("result:", res.Data().(*GolangLtd).Default[1][2])
    res.Data().(*GolangLtd).Default[1][2] = 18
    fmt.Println("result:", res.Data().(*GolangLtd).Default)
    fmt.Println("result:", res.Data().(*GolangLtd).PlayerA)
    //--------------------------------------------------------------------------
}

运行结果

LollipopGo 子游戏服务器使用，代码如下：

定义变量：

var cacheDSQ *cache2go.CacheTable

初始化：

func initDSQNetRPC() {
    client, err := jsonrpc.Dial("tcp", service)
    if err != nil {
        log.Debug("dial error:", err)
    }
    ConnDSQRPC = client
    cacheDSQ = cache2go.Cache("LollipopGo_DSQ")
}

测试逻辑，代码如下：

//------------------------------------------------------------------------------

func CacheSaveRoomData(iRoomID int, data *RoomPlayerDSQ, openid string) {
    cacheDSQ.Add(iRoomID, 0, data)
    CacheSavePlayerUID(iRoomID, openid)
}

func CacheGetPlayerUID(iRoomID int, player string) string {
    res, err1 := cacheDSQ.Value(iRoomID)
    if err1 != nil {
        panic("没有对应数据")
        return ""
    }
    if res.Data().(*RoomPlayerDSQ).OpenIDA == player {
        return res.Data().(*RoomPlayerDSQ).OpenIDB
    } else {
        return res.Data().(*RoomPlayerDSQ).OpenIDA
    }
    return ""
}

func CacheSavePlayerUID(iRoomID int, player string) {
    res, err1 := cacheDSQ.Value(iRoomID)
    if err1 != nil {
        panic("没有对应数据")
        return
    }
    fmt.Println("result:", res.Data().(*RoomPlayerDSQ).OpenIDA)
    fmt.Println("result:", res.Data().(*RoomPlayerDSQ).OpenIDB)
    if len(res.Data().(*RoomPlayerDSQ).OpenIDA) == 0 {
        res.Data().(*RoomPlayerDSQ).OpenIDA = player
    } else {
        res.Data().(*RoomPlayerDSQ).OpenIDB = player
    }
    fmt.Println("result:", res.Data().(*RoomPlayerDSQ).OpenIDA)
    fmt.Println("result:", res.Data().(*RoomPlayerDSQ).OpenIDB)
    return
}

func CacheUpdateRoomData(iRoomID int, Update_pos string, value int) {

    res, err1 := cacheDSQ.Value(iRoomID)
    if err1 != nil {
        panic("棋盘数据更新失败！")
        return
    }

    ipos_x := 0
    ipos_y := 0
    strsplit := Strings_Split(Update_pos, ",")
    if len(strsplit) != 2 {
        panic("棋盘数据更新失败！")
        return
    }
    for i := 0; i < len(strsplit); i++ {
        if i == 0 {
            ipos_x = util.Str2int_LollipopGo(strsplit[i])
        } else {
            ipos_y = util.Str2int_LollipopGo(strsplit[i])
        }
    }
    fmt.Println("修改的棋盘的坐标", ipos_x, ipos_y)
    // 测试数据
    fmt.Println("result:", res.Data().(*RoomPlayerDSQ).ChessData[ipos_x][ipos_y])
    res.Data().(*RoomPlayerDSQ).ChessData[ipos_x][ipos_y] = value
    fmt.Println("result:", res.Data().(*RoomPlayerDSQ).ChessData[ipos_x][ipos_y])
    return
}

// 获取默认棋牌数据是否翻开
// true 表示翻开了
// itype ==1 查询是否翻开
// itype ==2 修改数据
func CacheGetChessDefaultData(iRoomID int, Update_pos string, itype int, valve int) (bool, int) {
    res, err1 := cacheDSQ.Value(iRoomID)
    if err1 != nil {
        panic("棋盘数据获取数据失败！")
        return false, -1
    }
    ipos_x := 0
    ipos_y := 0
    strsplit := Strings_Split(Update_pos, ",")
    if len(strsplit) != 2 {
        panic("棋盘数据获取数据失败！")
        return false, -1
    }
    for i := 0; i < len(strsplit); i++ {
        if i == 0 {
            ipos_x = util.Str2int_LollipopGo(strsplit[i])
        } else {
            ipos_y = util.Str2int_LollipopGo(strsplit[i])
        }
    }
    fmt.Println("修改的棋盘的坐标", ipos_x, ipos_y)
    if itype == 1 {
        // 获取
        fmt.Println("result:", res.Data().(*RoomPlayerDSQ).Default[ipos_x][ipos_y])
        idata := res.Data().(*RoomPlayerDSQ).Default[ipos_x][ipos_y]
        if idata == (2*Proto2.Mouse + 1) {
            return false, -1
        } else {
            return true, -1
        }
    } else if itype == 2 {
        // 修改翻盘结构
        fmt.Println("result:", res.Data().(*RoomPlayerDSQ).Default[ipos_x][ipos_y])
        res.Data().(*RoomPlayerDSQ).Default[ipos_x][ipos_y] = valve
        return true, res.Data().(*RoomPlayerDSQ).ChessData[ipos_x][ipos_y]
    }
    return false, -1
}
//------------------------------------------------------------------------------

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Golang语言社区论坛 ：
www.Golang.Ltd
LollipopGo游戏服务器地址：
https://github.com/Golangltd/LollipopGo
社区视频课程课件GIT地址：
https://github.com/Golangltd/codeclass

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