magento性能优化指南(magento_performance_optimization_101).pdf

Angus Li( @angusli)  Performance paradigm  Basic rules of website performance  Optimize LAMP stack  Tweak Magento box  Tools utilities  Donald Knuth says “Premature optimization is the root of all evil” ... so choose the right time to start your optimization Performance optimization is an ever going task … so don’t think your optimization is “once for all”, keep identifying the bottleneck of your site and make improvement little by little Server side Network/HTTP Browser Process your page Transfer your Render your page as quickly as content as quickly as quickly as possible as possible possible Performance optimization #1: Make Fewer HTTP Requests #2: Use a Content Delivery Network #3: Add an Expires Header #4: Gzip Components #5: Put Stylesheets at the Top #6: Put Scripts at the Bottom #7: Avoid CSS Expressions #8: Make JavaScript and CSS External #9: Reduce DNS Lookups #10: Minify JavaScript #11: Avoid Redirects #12: Remove Duplicate Scripts #13: Configure Etags #14: Make AJAX Cacheable High Performance Web Sites by Steve Souders  Install a minimal Linux distribution with necessary packages only, get rid of GUI, X-window etc.  Stop and disable the unused services, e.g. cups  Tweak kernel parameters: # echo 8192 /proc/sys/fs/file-max # echo 32768 /proc/sys/fs/inode-max # echo 268435456 /proc/sys/kernel/shmall # echo 268435456 /proc/sys/kernel/shmmax # ulimit -n 4096  Compile required modules statically instead of DSO(Dynamic Shared Object), and disabled useless modules ./configure --prefix=/usr/local/apache2 --disable- status --disable-userdir --disable-threads --disable- ipv6 --enable-modules=s