Downloaded 174 times
Web Application Optimization Techniques
- 1. Web Application OptimizationTechniques
- 2. Lecture Outline Whatis Web Application Optimization? Why Optimize? Optimization Techniques Application Layer Optimization Techniques Presentation Layer Optimization Techniques Caching – How your browser does it Performance Analyzers Yslow Firebug Web Server Tuning Expires Last-Modified-Since Examples
- 3. What is WebApplication Optimization? Web Application Optimization is all about tuning your web application components to make your web application fast or appear fast.
- 4. Why Optimize? Fasterloading times for pages Lesser amount of data to transfer Less load on the server
- 5. Optimization Techniques ApplicationLayer Database Optimization Indexing Query optimization Table partitioning De-normalization Query caching Application Server Code Caching Code Refactoring Presentation Layer Cache Control Web Content Minify-ing
- 6. Caching – Howyour browser does it It's all in the headers Every time your browser gets a resource, it attempts to determine whether or not to cache the resource and for how long to do so. Validation on cached resources are carried out from time to time.
- 7. Performance Analyzers Yslow- http://developer.yahoo.com/yslow/
- 8. Performance Analyzers Firebug- http://www.getfirebug.com/
- 9. Web Server TuningExpires ExpiresActive On ExpiresByType text/html "access plus 1 day" ExpiresByType image/gif "access plus 5 months" ExpiresByType image/jpeg "access plus 5 months" ExpiresByType text/css "access plus 1 week" ExpiresByType application/x-javascript "access plus 1 week" ExpiresByType image/x-icon "access plus 5 months" Last-Modified-Since Normally inserted by the web server by default Deflate/Gzip AddOutputFilterByType DEFLATE text/html text/plain AddOutputFilter DEFLATE js css
- 10. Examples The firstgreat gift we can bestow on others is a good example - Morell, Thomas
- 11.
- 12. Links Pool http://developer.yahoo.com/yslow/http://www.getfirebug.com/ http://www.mnot.net/cache_docs/ http://developer.yahoo.com/performance/rules.html