[root@VM_0_7_centos conf]# cat nginx.conf
worker_processes  1;
error_log logs/error.log;
events {
    worker_connections 1024;
}

 
 
http {
include vhost/*.conf;
server {
        listen       22222;
        server_name  10.0.0.7 www.a.com localhost;
 
        #charset koi8-r;
 
        #access_log  logs/host.access.log  main;
        default_type 'text/plain';
 
        location /test {
            content_by_lua_file /Users/chenguowei/local/openresty/nginx/lua_conf/huidu.lua;
        }
 
        location @client1 {
            proxy_pass http://client1;
        }
 
        location @client2 {
            proxy_pass http://client2;
        }
}
}

[root@VM_0_7_centos ~]# cat   /Users/chenguowei/local/openresty/nginx/lua_conf/huidu.lua
local redis = require "resty.redis"
local cache = redis.new()
cache:set_timeout(60000)
 
local ok, err = cache.connect(cache, "10.0.0.205", 6379)
cache:auth("密码")
if not ok then
    ngx.say("failed to connect: redis", err)
    return
end
 
local local_ip = ngx.req.get_headers()["X-Real-IP"]
if local_ip == nil then
    local_ip = ngx.req.get_headers()["x_forwarded_for"]
end
 
if local_ip == nil then 
    local_ip = ngx.var.remote_addr
end
 
 
local intercept = cache:get("myip")
 
if intercept == local_ip then
    ngx.exec("@client2")
    return
end
 
ngx.exec("@client1") --之前不能有任何的ngx.say()函数执行过，否则请求会出错
 
local ok, err = cache:close()
 
if not ok then
    ngx.say("failed to close: ", err)
    return
end

[root@VM_0_42_centos src]# ./redis-cli -h 10.0.0.205 -p 6379
10.0.0.205:6379> set myip 10.0.0.7
OK
10.0.0.205:6379>