My talk on "webscale" for the rest of us (ie. everyone not running a Twitter, Groupon, or Braintree, etc) as delivered at RubyConf AU 2013 Video of the talk is available at http://vimeo.com/61342269

1. Webscale For The
Rest of Us
You’ve got ninety-nine problems, but needing a highly
available distributed key value store ain’t one

2. Hi, I’m @johnbarton
I co-founded this thing right here
which will show up on nearly every slide
I hear that brand awareness is important

3. Webscale For The
Rest of Us
TL; DL: Did you see all that awesome shit that
Braintree built? Don’t build that.

4. Credit: http://www.flickr.com/photos/avlxyz/4759859329/
Rails is
Omakase

5. A Danish word
for “My bat,
my ball,
my rules...”
Credit: http://www.flickr.com/photos/rooreynolds/243810229/

6. Credit: http://www.themoviedb.org/movie/80767-jiro-dreams-of-sushi/backdrops

7. Let’s Define Terms
Scaling is doing more of whatever makes
you money with some money left over

8. The Menu
MVC, Migrations, Asset pipeline, TDD,
Coffeescript, Bundler, etc

9. The Wine List
2+ Developers, doing “DevOps”on a vanilla rails
stack, to 2+ load balanced web servers, in front of
a master/slave SQL setup

10. Rails without DevOps
makes no sense at all

11. 1970 1980 1990 2000 2010
Developer Salaries RAM Prices
Source: My overactive imagination (2013)

12. Single Responsibility
Principle
A class should have one and only one reason to
change

13. Single Responsibility
Principle
A class server should have one and only one
reason to change
... or fail, or bottleneck

14. Y.A.G.N.I.

15. “Lady, I never walk into a
place I don't know how to
walk out of.”
Credit: http://www.themoviedb.org/movie/8195-ronin/backdrops

16. What about CACHING?
This is the big “it depends”

17. MongoDB is the
Ed Hardy t-shirt
of Datastores
Credit: http://www.flickr.com/photos/leumund/3800973404/

18. Stick with SQL for your
datastore
Please Note:
I did not say “Postgres Rulez” or “OMFG MySql”

19. If you can’t afford two,
you can’t afford one
App servers, Database servers, Developers

20. There are only three
numbers to know
Zero, One, and Many

21. #emumarch
John Allspaw
Head of Ops for Etsy
1 Blog post per week on
something opsy

22. A Concrete Example
Comparing the two Goodfilms product stacks...
assuming I have not rambled too long

23. Fin
http://goodfil.ms
@johnbarton http://whoisjohnbarton.com/