| 
									
										
										
										
											2004-03-28 15:15:38 +00:00
										 |  |  | <?xml version="1.0" encoding="iso-8859-1"?> | 
					
						
							|  |  |  | <!-- $Revision$ --> | 
					
						
							|  |  |  |   <chapter id="caching"> | 
					
						
							|  |  |  |    <title>Caching</title> | 
					
						
							|  |  |  |    <para> | 
					
						
							|  |  |  |    Caching is used to speed up a call to <link | 
					
						
							|  |  |  |    linkend="api.display">display()</link> or <link | 
					
						
							|  |  |  |    linkend="api.fetch">fetch()</link> by saving its output to a file. If a | 
					
						
							|  |  |  |    cached version of the call is available, that is displayed instead of | 
					
						
							|  |  |  |    regenerating the output. Caching can speed things up tremendously, | 
					
						
							|  |  |  |    especially templates with longer computation times. Since the output of | 
					
						
							|  |  |  |    display() or fetch() is cached, one cache file could conceivably be made up | 
					
						
							|  |  |  |    of several template files, config files, etc. | 
					
						
							|  |  |  |    </para> | 
					
						
							|  |  |  |    <para> | 
					
						
							|  |  |  |    Since templates are dynamic, it is important to be careful what you are | 
					
						
							|  |  |  |    caching and for how long. For instance, if you are displaying the front page | 
					
						
							|  |  |  |    of your website that does not change its content very often, it might work | 
					
						
							|  |  |  |    well to cache this page for an hour or more. On the other hand, if you are | 
					
						
							|  |  |  |    displaying a page with a weather map containing new information by the | 
					
						
							|  |  |  |    minute, it would not make sense to cache this page. | 
					
						
							|  |  |  |    </para> | 
					
						
							| 
									
										
										
										
											2004-04-13 11:47:32 +00:00
										 |  |  | &programmers.caching.caching-setting-up; | 
					
						
							|  |  |  | &programmers.caching.caching-multiple-caches; | 
					
						
							|  |  |  | &programmers.caching.caching-groups; | 
					
						
							| 
									
										
										
										
											2004-03-28 15:15:38 +00:00
										 |  |  | 
 | 
					
						
							| 
									
										
										
										
											2004-04-13 11:47:32 +00:00
										 |  |  | &programmers.caching.caching-cacheable; | 
					
						
							| 
									
										
										
										
											2004-03-28 15:15:38 +00:00
										 |  |  | </chapter> | 
					
						
							|  |  |  | <!-- Keep this comment at the end of the file
 | 
					
						
							|  |  |  | Local variables: | 
					
						
							|  |  |  | mode: sgml | 
					
						
							|  |  |  | sgml-omittag:t | 
					
						
							|  |  |  | sgml-shorttag:t | 
					
						
							|  |  |  | sgml-minimize-attributes:nil | 
					
						
							|  |  |  | sgml-always-quote-attributes:t | 
					
						
							|  |  |  | sgml-indent-step:1 | 
					
						
							|  |  |  | sgml-indent-data:t | 
					
						
							|  |  |  | indent-tabs-mode:nil | 
					
						
							|  |  |  | sgml-parent-document:nil | 
					
						
							|  |  |  | sgml-default-dtd-file:"../../../../manual.ced" | 
					
						
							|  |  |  | sgml-exposed-tags:nil | 
					
						
							|  |  |  | sgml-local-catalogs:nil | 
					
						
							|  |  |  | sgml-local-ecat-files:nil | 
					
						
							|  |  |  | End: | 
					
						
							|  |  |  | vim600: syn=xml fen fdm=syntax fdl=2 si | 
					
						
							|  |  |  | vim: et tw=78 syn=sgml | 
					
						
							|  |  |  | vi: ts=1 sw=1 | 
					
						
							| 
									
										
										
										
											2004-03-29 02:03:39 +00:00
										 |  |  | --> |