10. per • for • mance (noun)
1. a way to make more money
2. a way to work on stuff that
matters
11. A performant application has
a smaller footprint.
A smaller footprint means
less resources to manage.
Less resource management
means more time working on
the good stuff.
16. The Internet is a distributed
system.
We’ve become dependent on external services:
analytics, ads, trackers, social.
Loading an external service can add over 900ms
to your load time.
Synchronous Javascript calls will block your
page load.
19. CSS May Be Your
New Worst Enemy
Browsers block rendering until all CSS is
downloaded.
Browsers will download all CSS before
rendering, even if it is unused.
Does your mobile phone really need to
download the print stylesheet?
21. Death by Database
N+1 queries will bring your database to its
knees.
Slow queries will kick it while it is down.
Disk thrashing will finish it off and pick it’s
pockets for good measure.
22. In the Cloud Resources
Are Limitless, Right?
Resources in the cloud are abundant but
inconsistent.
Failing resources create a domino effect of
further failures.
Scaling has more to do with people more than
any other resource.
23. There and Back Again,
A Network Tale
Network round-trips can add up quickly, even
within the same datacenter.
Browsers will limit simultaneous downloads
from the same host.
Service Oriented Architectures are pushing
more data through the network.
30. Get In Touch With Us
http://support.newrelic.com
support@newrelic.com
@newrelic
31. Sources and credit:
Some content for this presentation was graciously provided by:
http://www.readwriteweb.com/enterprise/2012/05/the-fastest-online-payment-processor-its-google.php
http://blog.newrelic.com/2011/12/22/are-external-services-slowing-you-down-new-relic-infographic-reveals-
the-fastest-and-most-popular-external-apis/
http://www.webperformancetoday.com/2012/05/29/browser-innovation-14-web-performance-rules-faster-
loading-websites/
http://blogs.keynote.com/the_watch/2012/06/facebook-failed-did-you-.html
http://www.phpied.com/css-and-the-critical-path/
http://dtrace.org/blogs/brendan/2012/02/29/the-use-method/
http://highscalability.com/blog/2012/5/16/big-list-of-20-common-bottlenecks.html
https://gist.github.com/2841832