Nginx 反向代理缓存效果测试-白红宇

Nginx 反向代理缓存效果测试

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发布时间：2019-06-22

本文共 4841 字，大约阅读时间需要 16 分钟。

实验环境: 3台Centos 7的虚拟机

角色	ip
代理服务器	192.168.148.101
后端服务器	192.168.148.102
测试主机	192.168.148.103

后端服务器部署 httpd 准备测试网页

[root@localhost ~]# yum -y install httpd[root@localhost ~]# cp -v /etc/man_db.conf /var/www/html/man.html]# ls -lh /var/www/html/man.html-rw-r--r--. 1 root root 5.1K Jun  1 15:19 man.html[root@localhost ~]# systemctl start httpd

测试主机安装 curl httpd-tools

[root@localhost ~]# yum -y install httpd-tools curl# 测试网页访问，获取HTTP首部信息 Content-Length 大小 5K左右[root@localhost ~]# curl -I http://192.168.148.102/man.htmlHTTP/1.1 200 OKDate: Sat, 01 Jun 2019 07:22:37 GMTServer: Apache/2.4.6 (CentOS)Last-Modified: Sat, 01 Jun 2019 07:19:50 GMTETag: "1433-58a3df4ec4829"Accept-Ranges: bytesContent-Length: 5171Content-Type: text/html; charset=UTF-8

代理服务器配置EPEL源安装nginx，配置代理

[root@localhost ~]# yum -y install nginx[root@localhost nginx]# vim nginx.confhttp {    server {        listen       80;    location / {         proxy_pass http://192.168.148.102/;         proxy_http_version 1.1;    }}

测试主机通过代理访问

[root@localhost ~]# curl -I http://192.168.148.101/man.htmlHTTP/1.1 200 OKServer: openrestyDate: Sat, 01 Jun 2019 07:31:45 GMTContent-Type: text/html; charset=UTF-8Content-Length: 5171Connection: keep-aliveLast-Modified: Sat, 01 Jun 2019 07:19:50 GMTETag: "1433-58a3df4ec4829"Accept-Ranges: bytes

代理服务器开启缓存

[root@localhost nginx]# vim nginx.confhttp {    proxy_cache_key string; ##缓存中用于“键”的内容，默认值：proxy_cache_key $scheme$proxy_host$request_uri;    proxy_cache_valid 200 301 302 10m;    proxy_cache_valid 404 1m;    proxy_cache_path /var/run/nginx/proxy_cache levels=1:2:2 keys_zone=proxycache:20m inactive=120s  max_size=1g; #在硬盘上创建缓存目录 server {        listen       80;    location /web {         proxy_pass http://192.168.148.102/;         proxy_http_version 1.1;         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;         proxy_cache proxycache; #调用定义的缓存         proxy_cache_key $request_uri; #缓存访问的uri    }}

代理服务器和后端服务器清空网卡流量统计信息

[root@localhost ~]# modprobe -r e1000; modprobe e1000[root@localhost ~]# ifconfig eth0eth0: flags=4163
    
       mtu 1500        inet 192.168.148.101  netmask 255.255.255.0  broadcast 192.168.148.255        inet6 fe80::20c:29ff:febd:3f8b  prefixlen 64  scopeid 0x20
             ether 00:0c:29:bd:3f:8b  txqueuelen 1000  (Ethernet)        RX packets 39  bytes 3198 (3.1 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 35  bytes 3388 (3.3 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0[root@localhost ~]# modprobe -r e1000; modprobe e1000[root@localhost ~]# ifconfig eth0eth0: flags=4163
     
        mtu 1500        inet 192.168.148.102  netmask 255.255.255.0  broadcast 192.168.148.255        inet6 fe80::20c:29ff:fe35:8bbe  prefixlen 64  scopeid 0x20
              ether 00:0c:29:35:8b:be  txqueuelen 1000  (Ethernet)        RX packets 23  bytes 1886 (1.8 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 20  bytes 1940 (1.8 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

缓存测试

# 测试主机测试网页访问[root@localhost ~]# curl http://192.168.148.101/man.html# 代理服务器上确认缓存生成结果[root@localhost ~]# tree /var/run/nginx/proxy_cache//var/run/nginx/proxy_cache/└── 3    └── 47        └── 3c            └── 05d13bbd1e55c50b1408f46dce73c4733 directories, 1 file# 通过ab工具测试并发200个请求 总请求10000[root@localhost ~]# ab -n10000 -c200  http://192.168.148.101/man.htmlDocument Path:          /man.htmlDocument Length:        5171 bytesConcurrency Level:      200Time taken for tests:   1.850 secondsComplete requests:      10000Failed requests:        0Write errors:           0Total transferred:      54230000 bytes #传输了54M的数据HTML transferred:       51710000 bytes # 代理服务器 网卡发送流量 TX packets 57M[root@localhost ~]# ifconfig eth0eth0: flags=4163
    
       mtu 1500        inet 192.168.148.101  netmask 255.255.255.0  broadcast 192.168.148.255        inet6 fe80::20c:29ff:febd:3f8b  prefixlen 64  scopeid 0x20
             ether 00:0c:29:bd:3f:8b  txqueuelen 1000  (Ethernet)        RX packets 62132  bytes 5110333 (4.8 MiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 82148  bytes 59774642 (57.0 MiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0# 后端服务器网卡发送流量 12KB (由于代理服务器有缓存不需要从后端服务器取数据)[root@localhost ~]# ifconfig eth0eth0: flags=4163
     
        mtu 1500        inet 192.168.148.102  netmask 255.255.255.0  broadcast 192.168.148.255        inet6 fe80::20c:29ff:fe35:8bbe  prefixlen 64  scopeid 0x20
              ether 00:0c:29:35:8b:be  txqueuelen 1000  (Ethernet)        RX packets 81  bytes 6464 (6.3 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 72  bytes 12967 (12.6 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0