½Ŀ¼:

4. (Webcache)
   4.1. ˵
   
4. (Webcache):
======================

4.1. ˵:
     
      Fikker ϵͳ, ٻΪܻ, ǿƻ, ܾ. 
     ٻҳ(html, asp, aspx, php, jsp, js, css) gzip ѹ
     ƽṹڴ, Ӳ̽κζд(־). 
     ٻеҳ汻Ժ, ͨѹ䷽ʽظ.
     
     ϴʽºô:
     (1). дӲ, ͨڴݽἫҳӦٶ.
     (2). ҳݾ gzip ѹ洢, ˶ڴռ, 
          ҲἫļݴ, ӦٶȺʹЧ.
     
     ܻ:
     ---------
     (1). Fikker Ĭô˹, ûԴ˽;
     
     (2). Fikker  HTTP Эͷ Cache-Control, Pragma  Expires ֶе
          Խлͷǻ, һվͨ HTTP 
          ȷе;
     
     ǿƻ:
     ---------
     (1). ǿƽָҳӵٻ, Զ̷ҳʱ, 
          ֱӷѻҳ, ޶ȵļվݿ⸺;
     
     (2). ҳܹԸ, ԼûԼ趨, 
          Ǽ, ǼٵǧСʱ;
     
     (3). ҳ潫 gzip ѹ洢ʹ, ̬ҳ(asp, php, jsp, aspx )
          ѹʱ, ڷѹ, ռõĴ 70% .
          : һ 300KB ıҳ, ѹԺΪ 70KB , ٴ 70% ,
          ڴʱ, ʡĴ.
     
     (4). ̬ҳ(asp, php, jsp, aspx )ٻ, վʱ, û
          ݿݶдƿ, ܹҳӦٶ 10 - 100 ;
     
     ܾ:
     ---------
     (1). ָܾҳ뵽ٻ, ҳÿһαʱ
          Դվȡµҳ;
     
     (2). һЩվ̨ûҳ治ʺϱ. Ϊⲿҳû˽, 
          ͬһҳ, ûڵ½ǰ͵½ʾǲͬ.
     
     ȼ:
     =======
     (1). ȼƥ˳Ϊ: ܾ > ǿƻ > ܻ. 
     
     (2). 1: һҳ汻ͬʱΪܾ, ǿƻܻ(ͨ HTTP ͷʶ), 
          Ϊܾȼϸ, ᱻ. 
          
     (3). 2: һҳ漴óǿƻҲܻ(ͨ HTTP ͷʶ), 
          Ϊǿƻȼϸ, ǿƻЧ, ǿƻýҳ.
     
     ƥ:
     =========
     (1). ͨƥ(Wildcard Character Pattern), Ƚϼõƥ䷽ʽ, 
          ͨΪʺ ? Ǻ *, ʺ ? ƥһַ, Ǻ * ƥ 0 ַ. 
          : fikker.com/images/*.jpg ƥ fikker.com/images/sun.jpg, 
          Ҳƥ fikker.com/images/ad/house.jpg, 
          ƥ fikker.com վĿ¼ images е jpg ʽͼƬ.
     
     (2). ʽƥ(Regular Expression Pattern), 趨ӵḻƥ, 
          ϸοص Posix Regex ĵ˵.
     
     (3). ȷƥ, һַƥӵַ URL. 
          : fikker.com/docs/manual.html ֻܳɹƥ fikker.com/docs/manual.html 
          ӱһӵַ.
