tiny.cc/Faster-Web-Apps

Want good ranking in Google? Make your web site fast!

Concentrate on lowering time-to-firest-byte (TTFB)

Loseless: Remove unused information from PNG

Loseless: Increase compression level of PNG

CLI tool: OptiPPNG, PNGCrush, PNGOUT...

JPG CLI tool: JPGtran, JPGoptim...

Convert JPGs to Progressive - "Feels faster" to user

Image data is loaded in multiple passes.

圖片會先模糊, 慢慢清晰呈現

Serve From Multiple Hostnames

Browsers download 2 and 6 resources in parallel.

WARNING: DNS lookups vs. number of sub-hosts.

Make as many resources as possible cacheable.

Browser's cache is alyways faster than downloading.

Distributed or "geo-aware" systems. - For example, Amazon Web Services Route 53.

LAZY developer do? 1. Use a Content Delivery Network. 2. Optimize his or her images.

Book: High Performance Web Sites, Even Faster Web Sites, Web Performance Daybook, Volume 2