本文为开源实验性工程:“github.com/GuoZhaoran/spikeSystem”的配套文章,原作者:“绘你一世倾城”,现为:猎豹移动php开发工程师,感谢原作者的技术分享。
a.jpg (31.14 KB, 下载次数: 960)
下载附件 保存到相册
5 年前 上传
1.png (16.44 KB, 下载次数: 982)
#配置负载均衡 upstream load_rule { server 127.0.0.1:3001 weight=1; server 127.0.0.1:3002 weight=2; server 127.0.0.1:3003 weight=3; server 127.0.0.1:3004 weight=4; } ... server { listen 80; server_name load_balance.com http: //www .load_balance.com/buy/ticket; location / { proxy_pass http://load_rule; } }
package main import ( "net/http" "os" "strings" ) func main() { http.HandleFunc("/buy/ticket", handleReq) http.ListenAndServe(":3001", nil) } //处理请求函数,根据请求将响应结果信息写入日志 func handleReq(w http.ResponseWriter, r *http.Request) { failedMsg := "handle in port:" writeLog(failedMsg, "./stat.log") } //写入日志 func writeLog(msg string, logPath string) { fd, _ := os.OpenFile(logPath, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0644) defer fd.Close() content := strings.Join([]string{msg, "\r\n"}, "3001") buf := []byte(content) fd.Write(buf) }
ab -n 1000 -c 100 http : // www .load_balance.com/buy/ticket
2.png (19.65 KB, 下载次数: 970)
3.png (20.02 KB, 下载次数: 926)
4.jpg (27.34 KB, 下载次数: 898)
5.png (15.33 KB, 下载次数: 932)
6.png (17.95 KB, 下载次数: 1010)
7.png (30.79 KB, 下载次数: 944)
8.png (45.34 KB, 下载次数: 949)
... //localSpike包结构体定义 package localSpike type LocalSpike struct { LocalInStock int64 LocalSalesVolume int64 } ... //remoteSpike对hash结构的定义和redis连接池 package remoteSpike //远程订单存储健值 type RemoteSpikeKeys struct { SpikeOrderHashKey string //redis中秒杀订单hash结构key TotalInventoryKey string //hash结构中总订单库存key QuantityOfOrderKey string //hash结构中已有订单数量key } //初始化redis连接池 func NewPool() *redis.Pool { return &redis.Pool{ MaxIdle: 10000, MaxActive: 12000, // max number of connections Dial: func() (redis.Conn, error) { c, err := redis.Dial("tcp", ":6379") if err != nil { panic(err.Error()) } return c, err }, } } ... func init() { localSpike = localSpike2.LocalSpike{ LocalInStock: 150, LocalSalesVolume: 0, } remoteSpike = remoteSpike2.RemoteSpikeKeys{ SpikeOrderHashKey: "ticket_hash_key", TotalInventoryKey: "ticket_total_nums", QuantityOfOrderKey: "ticket_sold_nums", } redisPool = remoteSpike2.NewPool() done = make(chan int, 1) done <- 1 }
package localSpike //本地扣库存,返回bool值 func (spike *LocalSpike) LocalDeductionStock() bool{ spike.LocalSalesVolume = spike.LocalSalesVolume + 1 return spike.LocalSalesVolume < spike.LocalInStock }
package remoteSpike ...... const LuaScript = ` local ticket_key = KEYS[1] local ticket_total_key = ARGV[1] local ticket_sold_key = ARGV[2] local ticket_total_nums = tonumber(redis.call('HGET', ticket_key, ticket_total_key)) local ticket_sold_nums = tonumber(redis.call('HGET', ticket_key, ticket_sold_key)) -- 查看是否还有余票,增加订单数量,返回结果值 if(ticket_total_nums >= ticket_sold_nums) then return redis.call('HINCRBY', ticket_key, ticket_sold_key, 1) end return 0 ` //远端统一扣库存 func (RemoteSpikeKeys *RemoteSpikeKeys) RemoteDeductionStock(conn redis.Conn) bool { lua := redis.NewScript(1, LuaScript) result, err := redis.Int(lua.Do(conn, RemoteSpikeKeys.SpikeOrderHashKey, RemoteSpikeKeys.TotalInventoryKey, RemoteSpikeKeys.QuantityOfOrderKey)) if err != nil { return false } return result != 0 }
hmset ticket_hash_key "ticket_total_nums" 10000 "ticket_sold_nums" 0
package main ... func main() { http.HandleFunc("/buy/ticket", handleReq) http.ListenAndServe(":3005", nil) }
package main //处理请求函数,根据请求将响应结果信息写入日志 func handleReq(w http.ResponseWriter, r *http.Request) { redisConn := redisPool.Get() LogMsg := "" <-done //全局读写锁 if localSpike.LocalDeductionStock() && remoteSpike.RemoteDeductionStock(redisConn) { util.RespJson(w, 1, "抢票成功", nil) LogMsg = LogMsg + "result:1,localSales:" + strconv.FormatInt(localSpike.LocalSalesVolume, 10) } else { util.RespJson(w, -1, "已售罄", nil) LogMsg = LogMsg + "result:0,localSales:" + strconv.FormatInt(localSpike.LocalSalesVolume, 10) } done <- 1 //将抢票状态写入到log中 writeLog(LogMsg, "./stat.log") } func writeLog(msg string, logPath string) { fd, _ := os.OpenFile(logPath, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0644) defer fd.Close() content := strings.Join([]string{msg, "\r\n"}, "") buf := []byte(content) fd.Write(buf) }
ab -n 10000 -c 100 [url=http://127.0.0.1:3005/buy/ticket]http://127.0.0.1:3005/buy/ticket[/url]
This is ApacheBench, Version 2.3 <$Revision: 1826891 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, [url=http://www.zeustech.net/]http://www.zeustech.net/[/url] Licensed to The Apache Software Foundation, [url=http://www.apache.org/]http://www.apache.org/[/url] Benchmarking 127.0.0.1 (be patient) Completed 1000 requests Completed 2000 requests Completed 3000 requests Completed 4000 requests Completed 5000 requests Completed 6000 requests Completed 7000 requests Completed 8000 requests Completed 9000 requests Completed 10000 requests Finished 10000 requests Server Software: Server Hostname: 127.0.0.1 Server Port: 3005 Document Path: /buy/ticket Document Length: 29 bytes Concurrency Level: 100 Time taken for tests: 2.339 seconds Complete requests: 10000 Failed requests: 0 Total transferred: 1370000 bytes HTML transferred: 290000 bytes Requests per second: 4275.96 [#/sec] (mean) Time per request: 23.387 [ms] (mean) Time per request: 0.234 [ms] (mean, across all concurrent requests) Transfer rate: 572.08 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 8 14.7 6 223 Processing: 2 15 17.6 11 232 Waiting: 1 11 13.5 8 225 Total: 7 23 22.8 18 239 Percentage of the requests served within a certain time (ms) 50% 18 66% 24 75% 26 80% 28 90% 33 95% 39 98% 45 99% 54 100% 239 (longest request)
//stat.log ... result:1,localSales:145 result:1,localSales:146 result:1,localSales:147 result:1,localSales:148 result:1,localSales:149 result:1,localSales:150 result:0,localSales:151 result:0,localSales:152 result:0,localSales:153 result:0,localSales:154 result:0,localSales:156 ...
来源:即时通讯网 - 即时通讯开发者社区!
轻量级开源移动端即时通讯框架。
快速入门 / 性能 / 指南 / 提问
轻量级Web端即时通讯框架。
详细介绍 / 精编源码 / 手册教程
移动端实时音视频框架。
详细介绍 / 性能测试 / 安装体验
基于MobileIMSDK的移动IM系统。
详细介绍 / 产品截图 / 安装体验
一套产品级Web端IM系统。
详细介绍 / 产品截图 / 演示视频
引用此评论
精华主题数超过100个。
连续任职达2年以上的合格正式版主
为论区做出突出贡献的开发者、版主等。
Copyright © 2014-2024 即时通讯网 - 即时通讯开发者社区 / 版本 V4.4
苏州网际时代信息科技有限公司 (苏ICP备16005070号-1)
Processed in 0.125000 second(s), 44 queries , Gzip On.