Presented at the Open Commerce Conference on June 28-29, 2016 in New York City

1. Powered by

2. Me llamo Miguel
I do this

4. My Team

5. “Mermaid Tucker”

7. #OpenCommerce
mtucker@godaddy.com
@mtazva

8. Online Store
The Pit of Success

9. Why Spree?
● Easily Customizable
● Fully Featured
● Existing API
● Highly Extensible
● Great Community!

10. by developers
for developers

11. Simplifying the Experience
● Grid-based options building
● Simple customization via themes engine
● Automatic PayPal activation
● Automatic domain management
● Automatic SSL management
● Automatic label printing
● Hiding the dirty details

12. Magnifying the Impact
● Automatic email marketing integration
● Simple and automatic Facebook store
● One-click product reviews engine

13. SaaS-ification
● Multi-tenancy
● Themes engine
● Internal integrations (single sign-on, domains, others)
● GoDaddy branding

15. We are
the 1%

16. Making the Sale
Get Published

17. Making the Sale
Get Social!

18. Scaling Spree - Tech Stack
● CentOS 6
● Ruby 2.2
● Ceph (internal cloud storage)
● Github / GHE
● Jenkins for CI/CD
● Puppet
● Hadoop
● StatsD and Graphite
● NewRelic
● SumoLogic
● Honeybadger
● Apache Traffic Server 5.3
● HAProxy 1.5
● Apache 2.2
● Unicorn 4.9
● Rails 4.1 [https://github.com/spree/spree/pull/7192]
● Spree 2.2
● Bootstrap 3
● React 0.14
● Delayed Job
● Memcached
● MySql 5.5
● Akamai CDN

19. Scaling Spree - Architecture
A10
CommonDB
API
(4)
App
(6)
MerchantDB
ATS
HAProxy
ATS
HAProxy
ATS
HAProxy
ATS
HAProxy
SSL Termination
Redundancy
Horizontal Scaling
Context-specific data
Global metadata
Job
(4)
Memcached
(4)

20. Scaling Spree - Performance
● 10s of thousands of unique live storefronts
● ~1.5M page views per day
● Average page response time ~2.5s
● Average server response ~300ms
● Capable of ~400rps per app server before performance degrades
● >99.99% uptime

21. The ActiveRecord Callbacks Problem
● Obscure business logic. Explicit => Implicit
● Often have unintended side effects
● Require deep understanding of AR internals
● Can cause a chain reaction performance nightmare

22. that!

23. The AR Callbacks Problem
Option Type Product
Taxonomy
Taxon
Option Value
1:1 1:M
1:M
1:M
Variant
1:M
1:1
parent
Variant
Product
Taxonomy
Taxon
belongs_to :option_type,touch: true
after_touch :touch_all_variants
after_touch :touch_all_products
belongs_to :product, touch: true
after_save :run_touch_callbacks
after_touch :touch_taxons after_touch :touch_parent

24. Yo Dawg
I heard you like ActiveRecord Callbacks
So I added a callback that will call you back
When your callback calls my callback

26. The AR Callbacks Problem
A Stop Gap Solution
https://github.com/godaddy/activerecord-delay_touching
ActiveRecord::Base.delay_touching do
# touch_all_the_things
end

27. The AR Callbacks Problem
What do we do?
Be more explicit with Service Objects
OptionValueUpdater.new(option_value).call
● Explicit, clear business logic
● No hidden side effects
● No magic to understand
● Aggregation of bulk updates

28. My time with Rails is up (Piotr Solnica)
http://solnic.eu/2016/05/22/my-time-with-rails-is-up.html
“People are attracted by Rails because it gives you a false sense of
simplicity, whereas what really happens is that complexity is being hidden
by convenient interfaces. [...] ActiveRecord is just one, representative
example, [...].”
All Things in Moderation
Rails has won: The Elephant in the Room (Fabio Akita)
http://www.akitaonrails.com/2016/05/23/rails-has-won-the-elephant-in-the-room
“[…] for all intents and purposes, Active Record still does much better than
average. But if you're big, you should be careful. That's all.”

29. Spree Wish List
Improve Order Consistency
● Do not trigger order recalculation once complete (or at least be more explicit)
○ Some operations can cause completed orders to be recalculated
● Snapshot product details on orders
○ Modifying product information is reflected in completed orders

30. Spree Wish List
Maintain Clear Upgrade Paths
● Semantic versioning
● Non-breaking data migrations
● Upgrades without downtime

31. Spree Wish List
Preview/Publish Mechanism
● Allow site changes to be staged and viewed before making live

32. Spree Wish List
Simplify Customization
● Better hooks for overriding flows and replacing features
○ Dependency Injection
○ Configurable Service Locators
○ Integration Hooks in Service Objects

33. Spree Wish List
Support Automated Integrations
● First class application marketplace
○ Engine to plugin extensions without development work
○ Oauth-based activation and requirements-based authorization
■ Generates unique, role-based api users
Spree :)

34. Spree Wish List
Keep on Being You!!
● Retain a helpful and collaborative community
● Share and learn from each other

35. mtucker@godaddy.com
At GoDaddy
we're pulling for small business.
Help us transform the global economy, one entrepreneur at a time.

36. @mtazva
mtucker@godaddy.com