文章目录
-
- 1、优化方案与主要实现代码
- 2、压测结果
-
- 2.1、设置Jmeter线程组
- 2.2、Jmeter聚合报告结果,支持11240/秒吞吐量
- [2.3、Jmeter TPS结果,支持15000/秒最大并发](#2.3、Jmeter TPS结果,支持15000/秒最大并发)
- 2.4、总CPU和总内存变化情况
- 2.5、Redis和go进程占用资源
1、优化方案与主要实现代码
有一个每年都举行的投票活动,原系统是很多年前开发,系统的支持的并发数不高,在投票期间经常出现崩掉的情况。
投票规则为按IP限制,每24小时投1票。
1.1、原系统的技术架构
运行在4核8G服务器上,用了PHP+MySQL+Redis开发,运行在4核8G的服务器上。
投票页面的功能很简单:
- 1、是投票页面的访问,涉及当前选项的投票结果显示;
- 2、用户点击按钮进行投票,涉及数据入库保存和投票结果刷新问题。
旧投票系统虽然都用了缓存(有缓存时间),但是在持续流量下,缓存被击穿,访问页面或点击投票,出现数据库被读写的情况,系统崩掉。
1.2、新系统的技术架构
使用Go(gin、sqlx、go-redis)+Redis缓存+Redis队列+MySQL
实现逻辑图如下:
Jmeter压测投票接口:吞吐量在11240/秒,TPS最大值是大于15000/秒(压测结果在后面截图)。
1.3、查看和投票接口实现
查看接口/view和投票接口/vote接口实现
golang
package controllers
import (
"encoding/json"
"fmt"
"go-vote/config"
"go-vote/models"
"go-vote/utils"
"math/rand"
"strconv"
"time"
"github.com/gin-gonic/gin"
"github.com/redis/go-redis/v9"
)
var redis_util utils.RedisUtil
func init() {
redis_util = utils.RedisUtil{Url: config.Cache.Url, Password: config.Cache.Password}
redis_util.Connect()
}
/**
投票记录接口
*/
func View(c *gin.Context) {
ip := c.ClientIP()
// 获取已投票选项
city_id, _ := getVotedId(ip)
data_count := getVoteCount()
// 检查投票是否入库
is_vote := isVoteComplete(ip)
if is_vote == false {
data_count[city_id] = data_count[city_id] + 1
}
c.JSON(200, gin.H{
"code": 200,
"city_id": city_id,
"data_count": data_count,
})
}
/*
用户提交投票
*/
func Vote(c *gin.Context) {
ip := c.ClientIP()
// 获取用户本次提交的选项
city_idstr := c.PostForm("id")
vote_id, err_int := strconv.Atoi(city_idstr)
if err_int != nil {
c.JSON(200, gin.H{
"code": 201,
"message": "id格式错误",
})
}
// 获取投票记录
value, err2 := getVotedId(ip)
if err2 == redis.Nil || value == "" {
setVoteId(ip, vote_id)
// 标记投票未入库
setVoteComplete(ip)
// 添加到队列
addQueues(ip, vote_id)
c.JSON(200, gin.H{
"code": 200,
"message": "成功",
})
} else {
c.JSON(200, gin.H{
"code": 400,
"message": "失败",
})
}
}
func getVotedId(ip string) (string, error) {
return redis_util.Get(ip)
}
func setVoteId(ip string, id int) error {
return redis_util.Set(ip, id, time.Hour*24)
}
func isVoteComplete(ip string) bool {
key := "complete_" + ip
value, err := redis_util.Get(key)
if err == redis.Nil || value != "n" {
return true
} else {
return false
}
}
func setVoteComplete(ip string) {
key := "complete_" + ip
redis_util.Set(key, "n", time.Hour*24)
}
func getVoteCount() map[string]int64 {
filename := "city_count.json"
count_json, err_read := utils.ReadFile(filename)
var total_count map[string]int64
if err_read == nil {
if err_json := json.Unmarshal([]byte(count_json), &total_count); err_json != nil {
panic(err_json)
}
} else {
total_count = make(map[string]int64)
}
return total_count
}
func addQueues(ip string, id int) {
vote_data := models.VoteData{ip, id, time.Now().Format("2006-01-02 15:04:05")}
json_data, _ := json.Marshal(vote_data)
err := redis_util.LPush("vote_topic", string(json_data))
if err != nil {
fmt.Println("addQueues======= err:", err)
}
}
1.4、数据入库MySQL协程实现
package services
import (
"encoding/json"
"fmt"
"go-vote/config"
"go-vote/models"
"go-vote/utils"
"strconv"
"time"
"github.com/redis/go-redis/v9"
)
var redis_util utils.RedisUtil
var sqldao utils.SqlDao
func init() {
redis_util = utils.RedisUtil{
Url: config.Cache.Url,
Password: config.Cache.Password,
}
redis_util.Connect()
sqldao = utils.SqlDao{
Driver: config.Db.Driver,
Dsn: config.Db.Dsn,
}
sqldao.Connect()
}
func VoteJob() {
layout := "2006-01-02 15:04:05"
layout2 := "20060102"
shanghaiZone, _ := time.LoadLocation("Asia/Shanghai")
for {
var list_data []interface{}
for {
value, err := redis_util.LPop("vote_topic").Result()
if err == nil && value != "" {
data := models.VoteData{}
json.Unmarshal([]byte(value), &data)
create_date, _ := time.ParseInLocation(layout, data.Date, shanghaiZone)
create_day, _ := strconv.Atoi(create_date.Format(layout2))
vote_log := models.VoteLog{CityId: data.Id, ClientIp: data.Ip, CreateDay: create_day, CreateDate: create_date}
list_data = append(list_data, vote_log)
if len(list_data) >= 1000 {
saveLog(list_data)
list_data = []interface{}{}
}
} else if err == redis.Nil {
fmt.Println("break=======", time.Now().Format("2006-01-02 15:04:05"))
break
}
}
if len(list_data) > 0 {
saveLog(list_data)
list_data = []interface{}{}
}
time.Sleep(time.Second * 1)
}
}
func saveLog(list_data []interface{}) {
new_count := make(map[int]int64)
count, err_insert := sqldao.InsertManyObj("insert into vote_log(city_id,client_ip,create_day,create_date) values(:city_id,:client_ip,:create_day,:create_date)", list_data)
for _, v := range list_data {
data := v.(models.VoteLog)
city_id := data.CityId
city_count, ok := new_count[city_id]
if ok == false {
new_count[city_id] = 1
} else {
new_count[city_id] = city_count + 1
}
client_ip := data.ClientIp
delVoteComplete(client_ip)
}
filename := "city_count.json"
count_json, err_read := utils.ReadFile(filename)
var total_count map[string]int64
if err_read == nil {
if err_json := json.Unmarshal([]byte(count_json), &total_count); err_json != nil {
panic(err_json)
}
} else {
total_count = make(map[string]int64)
}
for k, v := range new_count {
key := strconv.Itoa(k)
count_total, ok := total_count[key]
if ok == true {
total_count[key] = count_total + v
} else {
total_count[key] = v
}
}
datas_json, _ := json.Marshal(total_count)
utils.WriteFile(filename, datas_json)
}
func delVoteComplete(ip string) {
key := "complete_" + ip
redis_util.Del(key)
}
1.5、路由配置
package routes
import (
"fmt"
"github.com/gin-gonic/gin"
"go-vote/controllers"
)
var Router *gin.Engine
func init() {
gin.SetMode(gin.ReleaseMode)
Router = gin.Default()
Router.Static("/static", "./static")
Router.StaticFile("/vote.html", "./html/vote.html")
Router.POST("/vote", controllers.Vote)
Router.GET("/view", controllers.View)
}
1.6、启动程序入口实现
package main
import (
"go-vote/routes"
"go-vote/services"
)
func main() {
go services.VoteJob()
Router := routes.Router
Router.Run(":8080")
}
2、压测结果
测试结果是在4核8G的Centos7虚拟机上压测。
2.1、设置Jmeter线程组
线程数1000,Ramp-up为1秒,循环次数1000,共产生100万条投票压测数据。
2.2、Jmeter聚合报告结果,支持11240/秒吞吐量
2.3、Jmeter TPS结果,支持15000/秒最大并发
2.4、总CPU和总内存变化情况
CPU从0%上升到31.2%最大值,随后在这个范围内上下浮动。
内存也在不断上升,压入100万数据后,内存从1.7GB上升到2.3GB,随后下降。
2.5、Redis和go进程占用资源
go应用./main:CPU从0%上升到280%;内存从0.3%上升到0.8%,变化不大;
redis-server:CPU从0%上升到81.2%;内存从10.3%上升到12.9%;
测试源码下载