1、 使用Nginx 的ip_hash作为负载均衡服务并支持Session sticky

2、 使用nginx sticky第三方模块实现基于cookie的负载均衡

3、使用nginx的map指令根据cookie分流：

map $COOKIE_abcdexpid $group {~*1$ apache001;~*2$  apache002;default   root;
}upstream apache001 {server 192.168.1.1:8080 weight=1 max_fails=1 fail_timeout=30s;
}upstream apache002 {server 192.168.1.2:8080 weight=1 max_fails=1 fail_timeout=30s;
}upstream root {server 192.168.1.0:8080 weight=1 max_fails=1 fail_timeout=30s;
}server {listen       8080;server_name  neoremind.net;log_format  main  '$remote_addr - $remote_user [$time_local] "$request" ''$status $body_bytes_sent "$http_referer" "group=$group"''"$http_user_agent" $gzip_ratio $request_time "$http_x_forwarded_for"';access_log  logs/access_log main;error_log   logs/error_log;location / {proxy_pass http://$group;proxy_set_header X-Forwarded-For $remote_addr;}
}

4、 利用set和if…else…   根据cookie分流

upstream apache001 {server 192.168.1.1:8080 weight=1 max_fails=1 fail_timeout=30s;
}upstream apache002 {server 192.168.1.2:8080 weight=1 max_fails=1 fail_timeout=30s;
}upstream root {server 192.168.1.0:8080 weight=1 max_fails=1 fail_timeout=30s;
}server {listen       8080;server_name  beidoutest.baidu.com;#match cookieset $group "root";if ($http_cookie ~* "abcdexpid=([^;]+)(1$)"){set $group apache001;}if ($http_cookie ~* "abcdexpid=([^;]+)(2$)"){set $group apache002;}log_format  main  '$remote_addr - $remote_user [$time_local] "$request" ''$status $body_bytes_sent "$http_referer" "group=$group"''"$http_user_agent" $gzip_ratio $request_time "$http_x_forwarded_for"';access_log  logs/access_log main;error_log   logs/error_log;location / {proxy_pass http://$group;proxy_set_header X-Forwarded-For $remote_addr;}}

5、nginx1.7.2版本后提供的hash方法：

# http context
upstream backend_hosts {
hash $cookie_jsessionid consistent;
server host1.example.com;
server host2.example.com;
server host3.example.com;

}

• 本文来自：Linux学习网