PHP企业级应用之常见缓存技术篇

MYSQL缓存：

这也算非代码级的，经典的数据库就是用的这种方式，看下面的运行时间，0.09xxx之类的
我贴段根据蓝色那家伙修改后部分my.ini吧，2G的MYISAM表可以在0.05S左右，据说他前后改了有快一年

[client]
……
default-character-set=gbk
default-storage-engine=MYISAM
max_connections=600
max_connect_errors=500
back_log=200
interactive_timeout=7200
query_cache_size=64M
……
table_cache=512
……
myisam_max_sort_file_size=100G
myisam_max_extra_sort_file_size=100G
myisam_sort_buffer_size=128M
key_buffer_size=1024M
read_buffer_size=512M
……
thread_concurrency=8

基于反向代理的Web缓存:

如Nginx，SQUID，mod_proxy(apache2以上又分为mod_proxy和mod_cache)

NGINX的例子

<nginx.conf>
#user  nobody;
worker_processes  4;
error_log  logs/error.log crit;
pid        logs/nginx.pid;
worker_rlimit_nofile 10240;
events {
    use epoll;
    worker_connections  51200;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile    on;
    keepalive_timeout 65;
    tcp_nodelay on;
    # server pool
    upstream bspfrontsvr {
            server 10.10.10.224:80   weight=1;
            server 10.10.10.221:80   weight=1;
    }
   
    upstream bspimgsvr {
            server 10.10.10.201:80   weight=1;
    }
   
    upstream bspstylesvr {
            server 10.10.10.202:80   weight=1;
    }
   
    upstream bsphelpsvr {
            server 10.10.10.204:80   weight=1;
    }
   
    upstream bspwsisvr {
            server 10.10.10.203:80   weight=1;
    }
   
    upstream bspadminsvr {
            server 10.10.10.222:80   weight=1;
    }
   
    upstream bspbuyersvr {
            server 10.10.10.223:80   weight=1;
    }
   
    upstream bspsellersvr {
            server 10.10.10.225:80   weight=1;
    }
    upstream  bsploginsvr  {
            server 10.10.10.220:443  weight=1;
    }
    upstream  bspregistersvr  {
            server 10.10.10.220:80  weight=1;
    }
    log_format  test_com  ''$remote_addr - $remote_user [$time_local] "$request" ''
                             ''$status $body_bytes_sent "$http_referer" "$http_user_agent" '';
    #--------------------------------------------------------------------
    #img.test.com
    server {
        listen       10.10.10.230:80;
        server_name  img.test.com;
        location / {
                        proxy_pass      http://bspimgsvr;
                        include         proxy_setting.conf;
        }
        access_log  logs/img.log  test_com;
    }
   
    #style.test.com
    server {
        listen       10.10.10.230:80;
        server_name  style.test.com;
        location / {
                        proxy_pass      http://bspstylesvr;
                        include         proxy_setting.conf;
        }
        access_log  logs/style.log  test_com;
    }
   
   
    #help.test.com
    server {
        listen       10.10.10.230:80;
        server_name  help.test.com;
        location / {
                  

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