Presented at USI 2013 in Paris, France. Like what you've read? We're frequently hiring for a variety of engineering roles at Etsy. If you're interested, drop me a line or send me your resume: mike@etsy.com. http://www.etsy.com/careers

1. Resilient User Experiences
Mike Brittain
ENGINEERING DIRECTOR, ETSY
@mikebrittain

2. Interfaces and user experiences
that adapt to technical and
architectural failure.

3. Consider the following
two situations...

6. http://www.flickr.com/photos/caffeina/2144044776/

7. http://www.flickr.com/photos/17793901@N00/106331831/

9. /**
* Creates a database connection.
*/
public function __construct($host, $user, $pass, $db) {
parent::__construct($host, $user, $pass, $db);
if (mysqli_connect_error()) {
throw new DBConnection_Exception(
sprintf("Error: %s, %s",
mysqli_connect_errno(),
mysqli_connect_error()));
}
}

10. try {
$conn = new DBConnection('viewsdb.host', 'db_read_user',
'ssssshh!', 'views_db');
} catch (DBConnection_Exception $e) {
// TODO: Someone should figure out what to do if
// we can't connect to the views db.
throw $e;
}

13. NavigationLogo
Cute Picture
“Something’s wrong,
try again...”

15. Critical path

16. Every back-end service is an
opportunity for failure.

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26. Are you showing your
visitors to the door?

27. Adverts SLA: 400 ms

28. Non-blocking Ajax

29. Google Docs
Google Calendar

30. GMail

31. “Oops, we aren’t able to access
click metrics right now, do not
worry — your data is safe.”

34. Product design doesn’t stop
at 100% availability.

35. OpsDev

36. Product
OpsDev

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38. Operability reviews and
post-mortems

39. Operational Mindset
OpsDev Product

40. Business Priorities
Operational Mindset
OpsDev Product

41. page views for error template

42. This is hard

43. ... but the benefits are great.

44. Merci!
These slides will be available at
mikebrittain.com/talks
Say “Hello!”
mike@etsy.com
@ mikebrittain
Resilient User Experiences