在一个项目还是单体架构的时候，所有的js，css，image都会在一个web网站上，看起来并没有什么问题，比如下面这样：

但是当web网站流量起来的时候，这个单体架构必须要进行横向扩展，而在原来的架构中静态资源这羊毛是出在单体架构这头羊身上，所以横向多少个单体，就有多少个静态资源文件夹，比如下面这样的架构。

那这种架构有什么问题呢？总的来说会有如下二个问题：

1. 浏览器对单一域名的请求有并发限制。

在同一个域名下，一般来说有js，css,img,media,html等等静态资源，如果资源都挂在同一个域名下，势必会影响页面的加载速度，而且单一域名下静态资源还会带上同域名下的cookie等本不需要附加的信息。

2. 不方便管理和资源的浪费

为什么这么说呢？我们知道静态资源一般来说都是很占资源空间的，尤其是用户上传的头像，csv那更是占用web服务器资源，为了应对突发情况，一般会保持web代码的3个版本的回滚策略，也就是说你需要在web1，web2，web3上同时进行3个静态资源文件夹的copy，相比单独用静态资源服务器统一管理的文件夹的情况对比，前者的磁盘资源的浪费可想而知。。。所以改正后的架构应该是这样的。

有些同学可能会说，空口无凭，你得找点真实的案例给我看看，为了满足你的胃口，下面我就找下‘携程’ 和 ‘淘宝’站点给你分享一下。

http://tengine.taobao.org/）上找到目前最新的 2.2.0的安装包。

[root@localhost myapp]# wget http://tengine.taobao.org/download/tengine-2.2.0.tar.gz
--2017-09-02 19:54:07--  http://tengine.taobao.org/download/tengine-2.2.0.tar.gz
Resolving tengine.taobao.org (tengine.taobao.org)... 120.55.149.135
Connecting to tengine.taobao.org (tengine.taobao.org)|120.55.149.135|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2160648 (2.1M) [application/octet-stream]
Saving to: ‘tengine-2.2.0.tar.gz’

100%[===================================================================================================>] 2,160,648   2.11MB/s   in 1.0s   

2017-09-02 19:54:13 (2.11 MB/s) - ‘tengine-2.2.0.tar.gz’ saved [2160648/2160648]
[root@localhost myapp]# tar -xzvf tengine-2.2.0.tar.gz
[root@localhost myapp]# ls
tengine-2.2.0  tengine-2.2.0.tar.gz
[root@localhost myapp]# cd tengine-2.2.0
[root@localhost tengine-2.2.0]# ls
AUTHORS.te  CHANGES CHANGES.ru  conf   contrib  html man  packages  README.markdown  tests
autoCHANGES.cn  CHANGES.te  configure  docs LICENSE  modules  READMEsrc  THANKS.te
[root@localhost tengine-2.2.0]# pwd
/root/myapp/tengine-2.2.0

2. 然后就是tengine的一些依赖包

[root@localhost myapp]# yum install -y zlib zlib-devel openssl openssl-devel pcre pcre-devel gcc gcc-c++

3. 常规的configure, make,make install

[root@localhost tengine-2.2.0]# ./configure --prefix=/usr/myapp/tengine
checking for OS
 + Linux 3.10.0-327.el7.x86_64 x86_64
checking for C compiler ... found
 + using GNU C compiler
 + gcc version: 4.8.5 20150623 (Red Hat 4.8.5-11) (GCC) 
checking for gcc -pipe switch ... found
checking for gcc builtin atomic operations ... found
checking for C99 variadic macros ... found
checking for gcc variadic macros ... found
checking for compiler structure-packing pragma ... found
checking for unistd.h ... found
checking for inttypes.h ... found
checking for limits.h ... found
checking for sys/filio.h ... not found
checking for sys/param.h ... found
checking for sys/mount.h ... found
checking for sys/statvfs.h ... found
checking for crypt.h ... found
checking for Linux specific features
checking for epoll ... found
checking for EPOLLRDHUP ... found
checking for O_PATH ... found
checking for sendfile() ... found
checking for sendfile64() ... found
checking for sys/prctl.h ... found
checking for prctl(PR_SET_DUMPABLE) ... found
checking for sched_setaffinity() ... found
checking for crypt_r() ... found
checking for SO_REUSEPORT ... found
checking for sys/vfs.h ... found
checking for nobody group ... found
checking for poll() ... found
checking for /dev/poll ... not found
checking for kqueue ... not found
checking for crypt() ... not found
checking for crypt() in libcrypt ... found
checking for F_READAHEAD ... not found
checking for posix_fadvise() ... found
checking for O_DIRECT ... found
checking for F_NOCACHE ... not found
checking for directio() ... not found
checking for statfs() ... found
checking for statvfs() ... found
checking for dlopen() ... not found
checking for dlopen() in libdl ... found
checking for sysinfo() ... found
checking for getloadavg() ... found
checking for /proc/meminfo ... found
checking for sched_yield() ... found
checking for SO_SETFIB ... not found
checking for SO_ACCEPTFILTER ... not found
checking for TCP_DEFER_ACCEPT ... found
checking for TCP_KEEPIDLE ... found
checking for TCP_FASTOPEN ... found
checking for TCP_INFO ... found
checking for accept4() ... found
checking for eventfd() ... found
checking for int size ... 4 bytes
checking for long size ... 8 bytes
checking for long long size ... 8 bytes
checking for void * size ... 8 bytes
checking for uint64_t ... found
checking for sig_atomic_t ... found
checking for sig_atomic_t size ... 4 bytes
checking for socklen_t ... found
checking for in_addr_t ... found
checking for in_port_t ... found
checking for rlim_t ... found
checking for uintptr_t ... uintptr_t found
checking for system byte ordering ... little endian
checking for size_t size ... 8 bytes
checking for off_t size ... 8 bytes
checking for time_t size ... 8 bytes
checking for setproctitle() ... not found
checking for pread() ... found
checking for pwrite() ... found
checking for sys_nerr ... found
checking for localtime_r() ... found
checking for posix_memalign() ... found
checking for memalign() ... found
checking for mmap(MAP_ANON|MAP_SHARED) ... found
checking for mmap("/dev/zero", MAP_SHARED) ... found
checking for System V shared memory ... found
checking for POSIX semaphores ... not found
checking for POSIX semaphores in libpthread ... found
checking for struct msghdr.msg_control ... found
checking for ioctl(FIONBIO) ... found
checking for struct tm.tm_gmtoff ... found
checking for struct dirent.d_namlen ... not found
checking for struct dirent.d_type ... found
checking for sysconf(_SC_NPROCESSORS_ONLN) ... found
checking for openat(), fstatat() ... found
checking for getaddrinfo() ... found
checking for PCRE library ... found
checking for PCRE JIT support ... found
checking for OpenSSL library ... found
checking for zlib library ... found
creating objs/Makefile

Configuration summary
  + using system PCRE library
  + using system OpenSSL library
  + md5: using OpenSSL library
  + sha1: using OpenSSL library
  + using system zlib library
  + jemalloc library is disabled

  nginx path prefix: "/usr/myapp/tengine"
  nginx binary file: "/usr/myapp/tengine/sbin/nginx"
  nginx configuration prefix: "/usr/myapp/tengine/conf"
  nginx configuration file: "/usr/myapp/tengine/conf/nginx.conf"
  nginx pid file: "/usr/myapp/tengine/logs/nginx.pid"
  nginx error log file: "/usr/myapp/tengine/logs/error.log"
  nginx http access log file: "/usr/myapp/tengine/logs/access.log"
  nginx http client request body temporary files: "client_body_temp"
  nginx dso module path: "/usr/myapp/tengine/modules/"
  nginx http proxy temporary files: "proxy_temp"
  nginx http fastcgi temporary files: "fastcgi_temp"
  nginx http uwsgi temporary files: "uwsgi_temp"
  nginx http scgi temporary files: "scgi_temp"

[root@localhost tengine-2.2.0]# make && make install

4. 启动tengine下的nginx进程，可以看到当我启动之后，tengine的80端口已经打开了。

[root@localhost myapp]# ls
tengine  tengine-2.2.0  tengine-2.2.0.tar.gz
[root@localhost myapp]# cd tengine
[root@localhost tengine]# ls
conf  html  include  logs  modules  sbin
[root@localhost tengine]# cd conf
[root@localhost conf]# cd ../sbin
[root@localhost sbin]# ls
dso_tool  nginx
[root@localhost sbin]# ./nginx 
[root@localhost sbin]# netstat -tln
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address   Foreign Address State  
tcp0  0 0.0.0.0:80  0.0.0.0:*   LISTEN 
tcp0  0 192.168.122.1:530.0.0.0:*   LISTEN 
tcp0  0 0.0.0.0:22  0.0.0.0:*   LISTEN 
tcp0  0 127.0.0.1:631   0.0.0.0:*   LISTEN 
tcp0  0 127.0.0.1:250.0.0.0:*   LISTEN 
tcp6   0  0 :::22   :::*LISTEN 
tcp6   0  0 ::1:631 :::*LISTEN 
tcp6   0  0 ::1:25  :::*LISTEN 
[root@localhost sbin]#

http://tengine.taobao.org/document_cn/http_concat_cn.html。

我这里采用静态编译，编译之前先把之前的tengine进程给关闭掉（nginx -s stop）。

[root@localhost myapp]# cd tengine-2.2.0
[root@localhost tengine-2.2.0]# ls
AUTHORS.te  CHANGES CHANGES.ru  conf   contrib  html Makefile  modules  packages  README.markdown  tests
autoCHANGES.cn  CHANGES.te  configure  docs LICENSE  man   objs READMEsrc  THANKS.te
[root@localhost tengine-2.2.0]# ./configure --prefix=/usr/myapp/tengine --with-http_concat_module && make && make install

接下来只要在nginx.conf 中配置concat on，最多合并20个文件，最后 nginx -s reload 重启一下

    location ~ ^/(images|javascript|js|css|flash|media|static)/  {
      root        /usr;
      concat on;
      concat_max_files 20;    
      concat_types text/css application/x-javascript;
    }

接下来再上传一个tips.css到/usr/css目录下，然后键入url：http://192.168.23.168/css/??top.css,tips.css ，，，终于大功告成啦。。。。

好了，本篇就说到这里，希望对你有帮助。。。

本文出自一线码农的博客，原文地址 http://www.cnblogs.com/huangxincheng/p/7469328.html

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