Optimising for Performance

Jan 26, 20140 likes503 views

This document discusses various techniques for optimizing website performance in order to improve search engine optimization (SEO) rankings. It outlines strategies for reducing page load time such as compressing files, lazy loading images, minimizing requests, caching content, and using modules like Apache's mod_pagespeed. The document stresses that the primary goal should be improving the user experience rather than solely focusing on achieving full scores on Google's Pagespeed Insights tool.

GETTING FULL SCORE ON GOOGLE
PA G E S P E E D , P I N G D O M A N D G T M E T R I X

OPTIMISING FOR
PERFORMANCE

THOMAS BENSMANN
LEAD DEVELOPER AND SOLUTIONS ARCHITECT
M E T R O N E T A S - M E T R O N E T. N O

WHY SPEED
M AT T E R S ?

• More returning visitors
• More page views

WHY SPEED
M AT T E R S ?

• More returning visitors
• More page views
• Google cares (SEO)
• When you know

something 
could be better…

TERMINOLOGY

• Nginx - known for speed 

and resource usage

• Varnish - used for caching

and/or load balancing

• Apache - very common
• Google PageSpeed mod -

Google’s module for Apache
and Nginx

“I’ve hugged a lot of servers in my life, and believe
me, they do not hug you back. They hate you.”

– AMAZON CTO, WERNER VOGELS

COMPRESSION

• Save bandwidth
• No difference in content
• Gzip
• mod-deflate (apache)

WHO DOESN’T LIKE WAITING IN LINE?

RENDER BLOCKING

RENDER
BLOCKING
• Scripts
• Styles
• The page has to wait 

• Load CSS before JS
• Load JS in the footer
• Load JS async

MINIFY

• CSS, JS and HTML
• Reduced file sizes
• YUI Compressor
• Google PageSpeed mod 

for Apache and Nginx

OPTIMISE IMAGES
• ImageOptim (on your mac)
• Atomised with Grunt or Gulp
• Server-side optimisers (jpegtran, optipng/pngout)
• WordPress plugin (EWWW image optimizer)
• Google PageSpeed mod

Lazy loading
GETTING RESOURCES WHEN NEEDED IF NEEDED
PLUGIN: BJ LAZY LOAD

W H Y M A K E I T D I F F I C U LT F O R O U R S E L F ?

REDUCE REQUESTS

REDUCE
REQUESTS

• Why keep asking the

server?
• Combine files
• Inline small files
• Reduce request

P L U G I N : M I N I T B Y K A S PA R S D

CACHING
PLUGINS

• W3 Total Cache
• Batcache
• WP Super Cache
• Quick Cache

CACHING
ENGINES

• APC (PHP < 5.5)
• Memcache
• Redis

CACHING
SOLUTIONS

• Varnish
• Nginx
• Cloudflare (external)

CLIENT SIDE CACHING
• Setting HTTP headers
• expires
• cache-control/pragma
• Version numbers in name
x script.js
x script.js?v=1.2
✓ script-1.2.js

M O D _ PA G E S P E E D
• Caches
• Combines and/or inlines files
• Minifies JS, CSS and HTML
• Optimizes images (metadata, compression,

dimensions)

• Lazy loading images

T E S T I N G A N D E V A L U AT I O N
• Google Pagespeed Insights
• Pingdom Website Speed Test
• GTMetrix
!

• Most importantly, the people who visit the site

GOALS

• Full score should not be a goal
• Use it as guidelines
• Don’t follow it blindly
• Know why

THAT’S ALL I HAD

THANK YOU FOR YOUR
TIME – ANY QUESTIONS?

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Optimising for Performance

1. GETTING FULL SCORE ON GOOGLE PA G E S P E E D , P I N G D O M A N D G T M E T R I X OPTIMISING FOR PERFORMANCE

2. THOMAS BENSMANN LEAD DEVELOPER AND SOLUTIONS ARCHITECT M E T R O N E T A S - M E T R O N E T. N O

3. WHY SPEED M AT T E R S ? • More returning visitors • More page views         

4. First impressions matter

5. WHY SPEED M AT T E R S ? • More returning visitors • More page views • Google cares (SEO) • When you know something  could be better…

6. “Fast is better than slow.”

7. SERVER TECH TERMINOLOGY

8. TERMINOLOGY • Nginx - known for speed  and resource usage • Varnish - used for caching and/or load balancing • Apache - very common • Google PageSpeed mod - Google’s module for Apache and Nginx

9. “I’ve hugged a lot of servers in my life, and believe me, they do not hug you back. They hate you.” – AMAZON CTO, WERNER VOGELS

10. SAVING BANDWIDTH COMPRESSION

11. COMPRESSION • Save bandwidth • No difference in content • Gzip • mod-deflate (apache)

12. WHO DOESN’T LIKE WAITING IN LINE? RENDER BLOCKING

13. RENDER BLOCKING • Scripts • Styles • The page has to wait  • Load CSS before JS • Load JS in the footer • Load JS async

14. KEEP IT SHORT M I N I F Y…

15. MINIFY • CSS, JS and HTML • Reduced file sizes • YUI Compressor • Google PageSpeed mod  for Apache and Nginx

16. OPTIMISE IMAGES • ImageOptim (on your mac) • Atomised with Grunt or Gulp • Server-side optimisers (jpegtran, optipng/pngout) • WordPress plugin (EWWW image optimizer) • Google PageSpeed mod

17. Lazy loading GETTING RESOURCES WHEN NEEDED IF NEEDED PLUGIN: BJ LAZY LOAD

18. W H Y M A K E I T D I F F I C U LT F O R O U R S E L F ? REDUCE REQUESTS

19. REDUCE REQUESTS • Why keep asking the server? • Combine files • Inline small files • Reduce request P L U G I N : M I N I T B Y K A S PA R S D

20. Keep your content in stock

21. CACHING PLUGINS • W3 Total Cache • Batcache • WP Super Cache • Quick Cache

22. CACHING ENGINES • APC (PHP < 5.5) • Memcache • Redis

23. CACHING SOLUTIONS • Varnish • Nginx • Cloudflare (external)

24. CLIENT SIDE CACHING • Setting HTTP headers • expires • cache-control/pragma • Version numbers in name x script.js x script.js?v=1.2 ✓ script-1.2.js

25. M O D _ PA G E S P E E D • Caches • Combines and/or inlines files • Minifies JS, CSS and HTML • Optimizes images (metadata, compression, dimensions) • Lazy loading images

26. A F R I E N D LY WARNING

27. T E S T I N G A N D E V A L U AT I O N • Google Pagespeed Insights • Pingdom Website Speed Test • GTMetrix ! • Most importantly, the people who visit the site

29. CHECKING OUT R E S U LT S

30. CHECKING OUT R E S U LT S

31. CHECKING OUT R E S U LT S

32. GOALS • Full score should not be a goal • Use it as guidelines • Don’t follow it blindly • Know why

33. THAT’S ALL I HAD THANK YOU FOR YOUR TIME – ANY QUESTIONS?

Optimising for Performance

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