Performance A Primer on Making Drupal Fast Martin Anderson-Clutz - Digital Echidna - @mandclu
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Performance A Primer on Making Drupal Fast
Martin Anderson-Clutz - Digital Echidna - @mandclu
Why Speed Matters
Performance Matters
Shopzilla – Speeding up their site by 5 seconds increased the conversion rate 7-12%, doubled the number of sessions from search engine marketing, and cut the number of required servers in half.
Mozilla – Shaving 2.2 seconds off their landing pages increased download conversions by 15.4%, which they estimate will result in 60 million more Firefox downloads per year.
Netflix – Adopting a single optimization, gzip compression, resulted in a 13-25% speedup and cut their outbound network traffic by 50%.
What Users Want
47% of users expect a page to load in 2 seconds or less
40% abandon websites that take more than 3 seconds to load.
As little as 1 second of delay decreases customer satisfaction by about 16% - every second counts
46% of online shoppers cite checkout speed as the number one factor that determines whether or not they will return to a site
85% of mobile users expect pages to load as fast or faster than they load on the desktop
Benefits of Being Quick
UX
Conversions
$$$
SEO
Understanding Performance
Measurement
Page load
Full page load
Page render
First paint
Time to interact
Requests per second
Measurement Tools
Remote Monitoring (webpagetest.org, AlertSite, etc.)
ySlow
Google PageSpeed
Google Analytics
New Relic
PHP Profiling
Watch the previous session on Blackfire
Know Your Audience
Geography
Technical
Browser
Bandwidth
Device
Key Factors
Page weight
Number of requests
3rd party assets
Delivery
Server
Complexity
What tools or methods do you find helpful in
diagnosing speed issues?
Let’s make it better
“Simplicity is the ultimate sophistication.”- Leonardo da Vinci
Site Strategy
Do less
Libraries
Modules
3rd party services
Performance budget
http://shouldiuseacarousel.com/
Front End
Images!
Compress aggressively
Keep small
Lazy load
Remove unused CSS
Use JS only when absolutely necessary
Render-blocking elements at end of page
Caching
Site Build
Caching - Page, blocks, views
Aggregate CSS and JS
Disable/Uninstall unnecessary modules
Statistics
UI Modules
Search?
Modules
Site Audit
Advanced Aggregation
Asynchronous Prefetch Database Query Cache (APDQC)
Entitycache
Fast 404
Syslog
Hosting Environment
Enable mod_deflate to gzip text files
Reverse Proxy (Varnish, Nginx, etc.) or cache (Boost)
Content Distribution Network (CDN)
Data Cache (APCu, Memcached, Redis, etc.)
Version of PHP
What’s in Drupal 8
Drupal 8
Full support for PHP 7
Entity Cache in core
Cache for logged in users
Asset dependencies
More granular cache
Cache Context API
#post_render_cache - placeholder HTML
BigPipe
What modules or services have you found helpful?
Questions?@mandclu
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