I Love APIs 2015

1. 1
State of your API!
Steven Richardson,
Carlos Eberhardt,
David Allen

2. Storing State: So Many Options
Options are good, too many can be confusing. How do you decide which
store to use for state?
Today we’ll provide guidelines!
Why should you trust us?
We are not crackpots!
- Steve – 4 years building solutions for enterprise customers.
- David – super smart dude who happens to really know Edge.
- Carlos – over 3 years talking to customers and prospects across a
variety of verticals.

3. What is State?
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• Pattern of Application Behavior
• State is information that is available to your
API at a defined moment

4. Common Reasons for State
• Application Scoped Configuration
• Business Rules
• Extended Authentication
• Performance Tuning
• Storing Server Credentials
• Support Complex Workflows
• Simulate Transactions
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5. Good reasons to keep state
• Application Scoped Configuration
• Extended Authentication and Identification
• Performance tuning
• Storing Server Credentials
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6. Common States
• Organization
• Environment
• Proxy
• Developer
• Client Application
• Product
• Request
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7. Available state stores to Edge
• Custom Properties
• Cache
• Key Value Map
• JS resource
• Vault
• BaaS
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8. Combo power - which stores to use when
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KVM
Best used when managing Simple Global
Properties that will change
Cache
Best used for growing state full information
JS Resource
Best used for JSON configuration or configuration
that doesn’t change often
Vault
Best used when using a node container to store
credentials
BaaS
Data shaping, and enrichment

9. Common examples
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10. BaaS Example – Enhanced Retail
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Product System
BaaS
API
- “Like” Product
- Recommendations
- Social Sharing
- Etc.
01001000 01010100 01010100
Users
Likes
Social Info

11. CAP Theorem
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RDBMS
JS
Resource
KMS /
Vault
Cache
Consistency
Fault
Tolerance
Availability

12. When to go outside the Edge
• Transactional data-store
• If data has a life-cycle outside of Edge
• If you need atomic consistency
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13. Understanding State
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• State can be useful
• Understand what’s available to avoid pitfalls
• Leverage the community at community.apigee.com

14. Questions?
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