server{

      if (!-e $request_filename)
       {
               rewrite ^(.*)$ /index.php last;
       }

     ｝

如果if 没有放在location时，在做memc缓存时，在错误日志里会提示以下信息

2014/05/12 10:45:51 [error] 11520#0: *325726 srcache_fetch: cache sent truncated response body while sending to client, client: 192.168.3.124,
server: jiaju.to8to.com, request: "GET /shop/ HTTP/1.1", subrequest: "/index.php", upstream: "fastcgi://127.0.0.1:9000", host: "jiaju.to8to.c
om", referrer: "http://jiaju.to8to.com/shop/"

location / {
              try_files $uri $uri/ /index.php?__q=$uri&$args;
                      }

判断语名一定要放入location的目录里