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Caching web contents in the browser

•
•
Ignacio Coloma
Ignacio Coloma

Controlling what web contents are going to be cached and how to tell the browser a cache policy is not hard at all - but you must know which headers must be set. In this 15-minute talk we will explain Last-Modified, ETag, Expires and Cache-Control, and MD5-based caching. This talk is not oriented towards any web application framework.

Technology
1 of 19
www.devoxx.com
Caching web contents in the browser ,[object Object],[object Object],[object Object],[object Object]
Overall Presentation Goal ,[object Object]
Speaker’s qualifications ,[object Object],[object Object],[object Object]
Ye olde cache ,[object Object],Source: http://www.sawse.com/
[object Object],[object Object],[object Object],Three things to know
[object Object],[object Object],304
[object Object],[object Object],304 with Last-Modified Browser Server <No header> Last-Modified: Fri, 02 Nov 2007 00:36:01 GMT If-Modified-Since: Fri, 02 Nov 2007 00:36:01 GMT 200 OK / 304 Not Modified First request Subsequent requests
[object Object],[object Object],304 with ETag Browser Server <No header> ETag: 2e88051-8c-43f0b6dd972c0 If-None-Match: 2e88051-8c-43f0b6dd972c0 200 OK / 304 Not Modified First request Subsequent requests
[object Object],[object Object],[object Object],[object Object],[object Object],Expires header Browser Server <No header> Expires: Mon, 15 Dec 2008 19:11:50 GMT Cache-Control: max-age=1209600 (No more requests until the resource expires) First request Subsequent requests ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The Refresh button
[object Object],[object Object],[object Object],Weak and strong indicators
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Strong indicators
[object Object],[object Object],[object Object],[object Object],Expires & strong indicators
DEMO ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Summary ,[object Object],[object Object],[object Object],[object Object]
Improve your performance! ,[object Object]
Q&A
Thanks for your attention ,[object Object],[object Object],[object Object],Source: http://www.sawse.com/ http://www.extrema-sistemas.com/

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