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push nginx 优化
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README.md
31
README.md
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@ -111,24 +111,25 @@
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9.所有秒杀相关的接口比如：秒杀，获取秒杀地址，获取秒杀结果，获取秒杀验证码都需要加上<br>
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9.所有秒杀相关的接口比如：秒杀，获取秒杀地址，获取秒杀结果，获取秒杀验证码都需要加上<br>
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秒杀是否开始结束的判断
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秒杀是否开始结束的判断
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#### [tomcat配置和优化](/docs/tomcat-good.md)
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#### [tomcat配置和优化](/docs/tomcat-good.md)
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#### [Nginx优化（前端缓存）]()
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#### [Nginx优化（前端缓存）](/docs/ngnix-good.md))
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1.并发优化 2.Keepalive长连接 3.压缩优化 4.配置缓存5.监控工具
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### [缓存](/docs/high-concurrency/why-cache.md)
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### [缓存](/docs/why-cache.md)
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- [在项目中缓存是如何使用的？缓存如果使用不当会造成什么后果？](/docs/high-concurrency/why-cache.md)
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- [在项目中缓存是如何使用的？缓存如果使用不当会造成什么后果？](/docs/why-cache.md)
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- [Redis 和 Memcached 有什么区别？Redis 的线程模型是什么？为什么单线程的 Redis 比多线程的 Memcached 效率要高得多？](/docs/high-concurrency/redis-single-thread-model.md)
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- [Redis 和 Memcached 有什么区别？Redis 的线程模型是什么？为什么单线程的 Redis 比多线程的 Memcached 效率要高得多？](/docs/redis-single-thread-model.md)
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- [Redis 都有哪些数据类型？分别在哪些场景下使用比较合适？](/docs/high-concurrency/redis-data-types.md)
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- [Redis 都有哪些数据类型？分别在哪些场景下使用比较合适？](/docs/redis-data-types.md)
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- [Redis 的过期策略都有哪些？手写一下 LRU 代码实现？](/docs/high-concurrency/redis-expiration-policies-and-lru.md)
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- [Redis 的过期策略都有哪些？手写一下 LRU 代码实现？](/docs/redis-expiration-policies-and-lru.md)
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- [如何保证 Redis 高并发、高可用？Redis 的主从复制原理能介绍一下么？Redis 的哨兵原理能介绍一下么？](/docs/high-concurrency/how-to-ensure-high-concurrency-and-high-availability-of-redis.md)
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- [如何保证 Redis 高并发、高可用？Redis 的主从复制原理能介绍一下么？Redis 的哨兵原理能介绍一下么？](/docs/how-to-ensure-high-concurrency-and-high-availability-of-redis.md)
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- [Redis 的持久化有哪几种方式？不同的持久化机制都有什么优缺点？持久化机制具体底层是如何实现的？](/docs/high-concurrency/redis-persistence.md)
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- [Redis 的持久化有哪几种方式？不同的持久化机制都有什么优缺点？持久化机制具体底层是如何实现的？](/docs/redis-persistence.md)
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- [Redis 集群模式的工作原理能说一下么？在集群模式下，Redis 的 key 是如何寻址的？分布式寻址都有哪些算法？了解一致性 hash 算法吗？如何动态增加和删除一个节点？](/docs/high-concurrency/redis-cluster.md)
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- [Redis 集群模式的工作原理能说一下么？在集群模式下，Redis 的 key 是如何寻址的？分布式寻址都有哪些算法？了解一致性 hash 算法吗？如何动态增加和删除一个节点？](/docs/redis-cluster.md)
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- [了解什么是 Redis 的雪崩和穿透？Redis 崩溃之后会怎么样？系统该如何应对这种情况？如何处理 Redis 的穿透？](/docs/high-concurrency/redis-caching-avalanche-and-caching-penetration.md)
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- [了解什么是 Redis 的雪崩和穿透？Redis 崩溃之后会怎么样？系统该如何应对这种情况？如何处理 Redis 的穿透？](/docs/redis-caching-avalanche-and-caching-penetration.md)
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- [如何保证缓存与数据库的双写一致性？](/docs/high-concurrency/redis-consistence.md)
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- [如何保证缓存与数据库的双写一致性？](/docs/redis-consistence.md)
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- [Redis 的并发竞争问题是什么？如何解决这个问题？了解 Redis 事务的 CAS 方案吗？](/docs/high-concurrency/redis-cas.md)
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- [Redis 的并发竞争问题是什么？如何解决这个问题？了解 Redis 事务的 CAS 方案吗？](/docs/redis-cas.md)
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- [生产环境中的 Redis 是怎么部署的？](/docs/high-concurrency/redis-production-environment.md)
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- [生产环境中的 Redis 是怎么部署的？](/docs/redis-production-environment.md)
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## 高可用架构
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## 高可用架构
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- [Hystrix 介绍](/docs/high-availability/hystrix-introduction.md)
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- [Hystrix 介绍](/docs/hystrix-introduction.md)
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- [电商网站详情页系统架构](/docs/high-availability/e-commerce-website-detail-page-architecture.md)
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- [电商网站详情页系统架构](/docs/e-commerce-website-detail-page-architecture.md)
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### 高可用系统
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### 高可用系统
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- 如何设计一个高可用系统？
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- 如何设计一个高可用系统？
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218
docs/ngnix-good.md
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218
docs/ngnix-good.md
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### 秒杀nginx优化
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有问题或者宝贵意见联系我的QQ,非常希望你的加入！
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##要求：
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>目标
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1.并发优化
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2.KeepALive长连接优化
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3.压缩优化
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4.配置缓存
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#### [/docs/tools/nginx nginx优化相关包](/docs/tools)
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安装：cd
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yum install -y gcc gcc-c++
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./configure --prefix=/usr/local/nginx --with-pcre=/home/qiurunze/下载/pcre-8.38 --with-http_stub_status_module --with-http_gzip_static_module --add-module=/home/qiurunze/下载/ngx_cache_purge-2.3
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make
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make install
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ps -ef | grep nginx
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./sbin/nginx -s reload
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http://nginx.org/en/docs/
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1.工作线程数和并发连接数
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worker_processes 4; #cpu，如果nginx单独在一台机器上
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worker_processes auto;
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events {
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worker_connections 4096;#每一个进程打开的最大连接数，超出了log中会有记录
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multi_accept on; #可以一次建立多个连接
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use epoll;
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}
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worker_rlimit_nofile 10240;每个进程打开的最大的文件数，受限于操作系统：
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vi /etc/security/limits.conf
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* hard nofile 102400
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* soft nofile 102400
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* soft core unlimited
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* soft stack 10240
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2.操作系统优化
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配置文件/etc/sysctl.conf
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sysctl -w net.ipv4.tcp_syncookies=1#防止一个套接字在有过多试图连接到达时引起过载
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sysctl-w net.core.somaxconn=1024#默认128，连接队列
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sysctl-w net.ipv4.tcp_fin_timeout=10 # timewait的超时时间
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sysctl -w net.ipv4.tcp_tw_reuse=1 #os直接使用timewait的连接
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sysctl -w net.ipv4.tcp_tw_recycle = 0 #回收禁用
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3.Keepalive长连接
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Nginx与upstream server：
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upstream server_pool{
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server localhost:8080 weight=1 max_fails=2 fail_timeout=30s;
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keepalive 300; #300个长连接
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}
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同时要在location中设置：
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location / {
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proxy_http_version 1.1;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection "upgrade";
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}
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客户端与nginx（默认是打开的）：
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4.keepalive_timeout 60s; #长连接的超时时间
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keepalive_requests 100; #100个请求之后就关闭连接，可以调大
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keepalive_disable msie6; #ie6禁用启用压缩
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gzip on;
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gzip_disable "MSIE [1-6]\.(?!.*SV1)";
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gzip_proxied any;
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gzip_types text/html text/plain application/x-javascript application/javascript text/css application/xml
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gzip_vary on; #Vary: Accept-Encoding
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gzip_static on; #如果有压缩好的 直接使用
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5.状态监控
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location = /nginx_status {
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stub_status on;
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access_log off;
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allow <YOURIPADDRESS>;
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deny all;
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}
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输出结果：
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Active connections: 1
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server accepts handled requests
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17122 17122 34873
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Reading: 0 Writing: 1 Waiting: 0
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Active connections：当前实时的并发连接数
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accepts：收到的总连接数，
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handled：处理的总连接数
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requests：处理的总请求数
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Reading：当前有都少个读，读取客户端的请求
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Writing：当前有多少个写，向客户端输出
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Waiting：当前有多少个长连接（reading + writing）
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reading – nginx reads request header
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writing – nginx reads request body, processes request, or writes response to a client
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waiting – keep-alive connections, actually it is active - (reading + writing)
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6.实时请求信息统计ngxtop
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https://github.com/lebinh/ngxtop
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(1)安装python-pip
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yum install epel-release
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yum install python-pip
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(2)安装ngxtop
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pip install ngxtop
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(3)使用
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指定配置文件： ngxtop -c ./conf/nginx.conf
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查询状态是200： ngxtop -c ./conf/nginx.conf --filter 'status == 200'
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查询那个ip访问最多： ngxtop -c ./conf/nginx.conf --group-by remote_addr
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-----------------------------------------------------------------------------
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nginx.conf配置文件
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user www;
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worker_processes 4;#取决于cpu
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error_log logs/error.log;
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pid logs/nginx.pid;
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worker_rlimit_nofile 10240; #每个进程打开的最大的文件数，受限于操作系统/etc/security/limits.conf
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events {
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worker_connections 10240;#每一个进程打开的最大连接数，超出了log中会有记录
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multi_accept on; #可以一次建立多个连接
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use epoll;
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}
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http {
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include mime.types;
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default_type application/octet-stream;
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server_tokens off; #隐藏版本号
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client_max_body_size 10m; #文件上传需要调大
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log_format main '$remote_addr - $remote_user [$time_local] "$request" '
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'$status $body_bytes_sent "$http_referer" '
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'"$http_user_agent" "$http_x_forwarded_for"';
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access_log logs/access.log main;
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#默认写日志：打开文件写入关闭，max:缓存的文件描述符数量，inactive缓存时间，valid：检查时间间隔，min_uses：在inactive时间段内使用了多少次加入缓存
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open_log_file_cache max=200 inactive=20s valid=1m min_uses=2;
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sendfile on;
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tcp_nopush on;
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#与浏览器的长连接
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keepalive_timeout 65;#长连接超时时间
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keepalive_requests 500;#500个请求以后，关闭长连接
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keepalive_disable msie6;
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# 启用压缩
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gzip on;
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gzip_disable "MSIE [1-6]\.(?!.*SV1)";
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gzip_proxied any;
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gzip_types text/plain application/x-javascript application/javascript text/css application/xml;
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gzip_vary on; #Vary: Accept-Encoding
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gzip_static on; #如果有压缩好的 直接使用
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#超时时间
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proxy_connect_timeout 5; #连接proxy超时
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proxy_send_timeout 5; # proxy连接nginx超时
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proxy_read_timeout 60;# proxy响应超时
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# 开启缓存,2级目录
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proxy_cache_path /usr/local/nginx/proxy_cache levels=1:2 keys_zone=cache_one:200m inactive=1d max_size=20g;
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proxy_ignore_headers X-Accel-Expires Expires Cache-Control;
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proxy_hide_header Cache-Control;
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proxy_hide_header Pragma;
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#反向代理服务器集群
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upstream server_pool{
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server localhost:8080 weight=1 max_fails=2 fail_timeout=30s;
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server localhost:8081 weight=1 max_fails=2 fail_timeout=30s;
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keepalive 200; # 最大的空闲的长连接数
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}
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server {
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listen 80;
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server_name localhost 192.168.220.133;
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location / {
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#长连接
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proxy_http_version 1.1;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection "upgrade";
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#Tomcat获取真实用户ip
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proxy_set_header Host $http_host;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header X-Forwarded-For $remote_addr;
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proxy_set_header X-Forwarded-Proto $scheme;
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proxy_pass http://server_pool;
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}
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# 状态监控
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location /nginx_status {
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stub_status on;
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access_log off;
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allow 127.0.0.1;
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allow 192.168.220.133;
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deny all;
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}
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#用于清除缓存
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location ~ /purge(/.*)
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{
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allow 127.0.0.1;
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allow 192.168.220.133;
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deny all;
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proxy_cache_purge cache_one $host$1$is_args$args;
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}
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# 静态文件加缓存
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location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|js|css|html|htm)?$
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{
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expires 1d;
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proxy_cache cache_one;
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proxy_cache_valid 200 304 1d;
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proxy_cache_valid any 1m;
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proxy_cache_key $host$uri$is_args$args;
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proxy_pass http://server_pool;
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}
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}
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}
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