Tomcat优化

1.1内存优化catalina

JAVA_OPTS="-server -Xms2048M -Xmx2048M -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=$CATALINA_HOME/logs/heap.dump"

1.2并发优化server.xml

<Connector maxConnections="300" acceptCount="200" maxThreads="400" minSpareThreads="200"/>

1.3其他优化

host.html: autoDeploy

http.html: enableLookups: false

context.html: reloadable

1.4APR优化

Nginx优化

2.1并发优化nginx.conf

worker_processes   4; #cpu

worker_rlimit_nofile 10240; #每个进程打开的最大的文件数，受限于操作系统

events {

    worker_connections 10240; #单个工作进程最大并发连接数

    multi_access on; #可以一次建立多个连接

    use epoll;

}

2.2KeepAlive长连接nginx.conf

nginx与upstream server

upstream server_pool {

server localhost:8080 weight=1 max_fails=2 fail_timeout=30s;

keepalive 300;

}

location / {

    proxy_http_version 1.1;

    proxy_set_header Upgrade $http_upgrade;

    proxy_set_header Connection "upgrade";

}

keepalive_timeout 60s;

keepalive_requests 100; #100个请求之后就关闭连接，可以调大

keepalive_disable msie6;

2.3压缩优化

gzip on;

gzip_disable "MSIE[1-6]\.(?!.*SV1)";

gzip_proxied any;

gzip_types text/html text/plain application/x-javascript application/javascript text/css application/xml

gzip_vary on;

gzip_static on; #如果有压缩好的，直接使用

2.3配置缓存

监控工具

nginx_status:并发统计

Ngxtop:请求统计