Nginx High-Performance Java Web application several important parameters

The internet on the high concurrency of nginx configuration is more, mainly nginx+php. Benbow describes the Nginx Java Web application configuration for high concurrency. Configure key points, see below

To configure the number of CPU cores

Worker_processes  10;

Worker_rlimit_nofile 102400;

Configure the Epoll network model Worker_connections threads to tens of thousands

Events {use    epoll;    Worker_connections  10240;}

Picture Resource Cache

Http{log_format Main ' $remote _addr-$remote _user [$time _local] "$request" ' $status $body _bytes_s              Ent "$http _referer" "$http _user_agent" "$http _x_forwarded_for"; Access_log Logs/access.log main; #控制缓冲区溢出攻击client_body_buffer_size 1k;client_header_buffer_size 1k;client_max_body_ Size 1k;large_client_header_buffers 2 1k;# #cache # #proxy_connect_timeout 5;proxy_read_timeout 60;proxy_send_timeout 5  ;p roxy_buffer_size 16k;proxy_buffers 4 64k;gzip_proxied any; Proxy_busy_buffers_size 128k;proxy_temp_file_write_size 128k;proxy_temp_path/home/temp_dir;proxy_cache_path/home /cache levels=1:2 keys_zone=<span style= "color: #ff0000;"          ><strong>cache_one</strong></span>:200m inactive=1d max_size=1g;        #gzip #gzip on;gzip_vary on;gzip_min_length 1k;gzip_buffers 4 8k;gzip_comp_level 4;gzip_http_version 1.0; Gzip_types text/plain text/css Application/json application/x-javascript text/xml applicatIon/xml application/xml+rss text/javascript;gzip_disable "MSIE [1-6]\.";} 

#图片前端缓存

Location ~. *\. (jsp|do|action)? ${# $server _port can not, only Nginx port is valid Proxy_set_header Host $host: $server _port;proxy_set_header        x-real-ip $remote _addr;proxy_set_header x-forwarded-for $remote _addr;proxy_pass http://tc;} Location ~. *\. (gif|jpg|png|htm|html|css|flv|ico|swf) {proxy_pass http://tc;proxy_redirect off;proxy_cache_key $host $uri$is_args$args;proxy_set_header host $host;p Roxy_ Cache <span style= "color: #ff0000;" ><strong>cache_one</strong></span>;p roxy_cache_valid 302 1h;proxy_cache_valid 301 1d;proxy _cache_valid any 1m;expires 30d;} Location ~. *\. (JS)? ${expires   

Nginx load Balancing Load balancing strategy is more, here are mainly used three kinds: ip_hash:ip sticky, for the web side there is no very mature session replication scheme, using IP sticky. After the user logs on, the session remains on a single PC. Least_conn: Minimum number of connections polling: Default. Assign to back-end servers in order of request time
Other StrategiesFairthird party, not studied. allocation of requests by the response time of the back-end server, with short response times for priority allocationUrl_hash: Third party , not studied. Linux operating system

vi/etc/sysctl.conf adding or modifying parameters

net.ipv4.tcp_timestamps = 0net.ipv4.tcp_synack_retries = 1net.ipv4.tcp_syn_retries = 1net.ipv4.tcp_tw_recycle = 1net.ipv4.tcp_tw_reuse = 1net.nf_conntrack_max = 655360net.netfilter.nf_conntrack_tcp_ timeout_established = 

<p><span style= "background-image:initial; background-attachment:initial; background-size:initial; background-origin:initial; background-clip:initial; background-position:initial; background-repeat:initial; " >kernel.shmall = 4294967296</span></p><p><span style= "Font-family:arial, Helvetica, Sans-serif; background-image:initial; background-attachment:initial; background-size:initial; background-origin:initial; background-clip:initial; background-position:initial; background-repeat:initial; " >net.ipv4.tcp_max_tw_buckets =</span><span style= "font-family:arial, Helvetica, Sans-serif; background-image:initial; background-attachment:initial; background-size:initial; background-origin:initial; background-clip:initial; background-position:initial; background-repeat:initial; " >6</span><span style= "font-family:arial, Helvetica, Sans-serif; background-image:initial; background-attachment:initial; Background-size:initial; background-origin:initial; background-clip:initial; background-position:initial; background-repeat:initial; " >000</span></p>

Vi/etc/security/limits.conf

* Soft nofile 1024000   * Soft Nproc 1024000    * Hard nofile 1024000* hard Nproc 1024000

Nginx High-Performance Java Web application several important parameters