The api economy

The API Economy
moshe.kaplan@brightaqua.com
http://blogs.microsoft.co.il/blogs/vprnd
http://top-performance.blogspot.com

http://top-performance.blogspot.com © Moshe Kaplan
Can We Do Better?
3
http://www.bonkersworld.net/building-software/

The VP R&D Open Seminar
BACKGROUND
4

Software Crisis
5
http://nigelonagile.com/2011/05/13/challenges-of-software-process-management-and-suggestions-for-improvements-in-tools/

???
6

Big Software Projects Fail!
7
http://leadinganswers.typepad.com/leading_answers/2007/05/large_project_r.html
Project Success (Standish Group, 2007)

Do We Create Value?
8

The Agile Era
Product Owner
PM
Teams
• The Biz Guy
• Owns the Product backlog
• Owns Sprint Backlog
• Decides what gets in and out
• Decides priorities
• Protect
• Train
• Guide: Standup, Analysis
and Review
Delivery
SCRUM Masters
Team Leaders
© Shay Cohen

How Can We Grow and Keep Velocity?
10

How to Manage Growth? Apple
11
http://www.bonkersworld.net/organizational-charts/

How to Manage Growth? Apple Now
12

How to Manage Growth? Microsoft
13

How to Manage Growth? Amazon
14

How to Manage Growth? Facebook
15

Transform The Enterprise
16
http://www.3scale.net/wp-content/uploads/2013/10/Winning-in-the-API-Economy-eBook-3scale.pdf

Public APIs are Booming
17
http://www.cutter.com/content-and-analysis/resource-centers/agile-project-management/sample-our-research/apmu1306.html
Source: ProgrammableWeb

API as a Market Survival Tool
18

The 3 Pillars of Successful Business
19
The Critical Mass
Products Differentiation
Prices Discrimination
Natural Entry BarriersStrategic Entry Barriers

The Critical Mass
20
Fixed Cost (CAPEX)
Variable Cost
(OPEX)
Total Cost
$$$
Clients
Per Client Cost
You want
to be here

Entry Barriers
Natural
Regulation
Absolute advantage cost structure
Scale
Equity requirements
Strategic
Barrier Price
Reliability
Sunk Cost
21

Platform and Products Differentiation
http://basecamp.com
22

Prices Discrimination
23
http://us.123rf.com/400wm/400/400/timea/timea1210/timea12100
0012/15939362-world-map-with-small-figures.jpg

API == Big Data
24
DataAPI

Two Sides Value
25
API
Consumer
API
Provider

AWS The Cloud Provider
26

Netflix: 800 Platforms and Apps
27

The Image Manipulation Provider
28

Askem
29

BUSINESS MODELS
30

2005: How Big We Though it Become
31
http://www.cutter.com/content-and-analysis/resource-centers/agile-project-management/sample-our-research/apmr1208.html

And today…
32

And today…
33

And today…
34

And today…
35

API DESIGN CHALLENGES
36

Will You Break Code?
Deprecation
Backward compatibility
Forward compatibility
http://www.astrology.com.au/media/COMPATIBILITY%20TEST%20this%20one.jpg

Can You Scale To Our Needs (SLA)?
http://cerasis.com/2013/06/17/logistics-service-level-agreement/

Will My Data be Safe?
http://www.vision7.com/app_system/lib/image/content/PCI_compliance.jpg

How Much Effort is Needed?
40
http://robots.thoughtbot.com/rspec-integration-tests-with-capybara

deployd: Backend for Non Coders
41

REST AND JSON
Core Design
42

The early days: SOAP/WS
http://sixwordlovestory.tumblr.com/page/314

Houston, We Have a Problem
http://jokegurus.com/2009/02/09/houston-we-have-a-problem/

REST is on the Lead
45

And JSON is Accelerating
46

The Rise of the REST

Code Example
<form id="frmlogin">
<input type="text" name="user"/></input>
<input type="password" name="password"></input>
</form>
postFile = 'http://myserver.com/login';
$("#btn").click(function() {
$.post(postFile, $("#frmlogin").serialize(), function(data) {
if (data.status=='true'){
window.location=data.url;
}, 'json');
});
echo json_encode(array('result' => $result));

JSON Format
{"menu":
{ "id": "file", "value": "File", "popup":
{ "menuitem": [
{"value": "New", "onclick": "CreateNewDoc()"},
{"value": "Open", "onclick": "OpenDoc()"},
{"value": "Close", "onclick": "CloseDoc()"}
] }
}
}
<menu id="file" value="File">
<popup>
<menuitem value="New" onclick="CreateNewDoc()" />
<menuitem value="Open" onclick="OpenDoc()" />
<menuitem value="Close" onclick="CloseDoc()" />
</popup>
</menu>

WEB AS A DELIVERY
FRAMEWORK
Core Design
51

HTTP methods
• Create
POST /questions/
• Read
GET /questions/ABC
Update
PUT /questions/ABC
Delete
DELETE /questions/ABC

Keep Accepting JSON Request Body
POST /blog/posts
Accept: application/json
Content-Type: application/json
Content-Length: 57
{"title":"Hello World!","body":"This is my
first post!"}
53
http://silex.sensiolabs.org/doc/cookbook/json_request_body.html

Return Values: HTTP error codes
2XX OK
3XX Redirect
4XX Not Found
5XX Application Error

Versioning in the Web
GET /api/v2/questions/ABC

Levels
Up to 3 levels of hierarchy
/api/v2/questions/ABC/answers/DEF
Keep it simple
Build growth

SCALING THE API
57

Keep Serving
Throttling
Rate Limiting
Traffic spikes

ZenDesk Example
< HTTP/1.1 429
< Server: nginx/1.4.2
< Date: Mon, 04 Nov 2013 00:18:27 GMT
< Content-Type: text/html; charset=utf-8
< Content-Length: 85
< Connection: keep-alive
< Status: 429
< Cache-Control: no-cache
< X-Zendesk-API-Version: v2
< Retry-After: 93
< X-Zendesk-Origin-Server: ****.****.***.*****.com
< X-Zendesk-User-Id: 338231444
< X-Zendesk-Request-Id: c773675d81590abad33i
< * Connection #0 to host SUBDOMAIN.zendesk.com left intact * Closing
connection #0 * SSLv3, TLS alert, Client hello (1): Rate limit for
ticket updates exceeded, please wait before updating this ticket
again
59
Rate limit exceeded

ZenDesk Example
response = request.get(url)
if response.status equals 429:
alert('Rate limited. Waiting to retry…')
wait(response.retry-after)
retry(url)
60

apigee
61

Mashery
62

Implementation
Statistics based in order to:
React fast
Avoid Overhead
63

Async/Sync
Sync: Result is available now
DB
Cache
Async: Result will be available
Queue
3rd Party

SECURING THE API
65

Security
http://www.vision7.com/app_system/lib/image/content/PCI_compliance.jpg

Network Encryption
67
http://www.techwyse.com/blog/internet-marketing/the-complete-beginners-guide-on-https/

Authentication and Tokenization
Open
API Keys
Session
OAuth 2.0
68
http://www.ibuildings.com/blog/2013/03/secure-your-rest-api-oauth2-implicit-grant

Logging
OAuth 2.0
69

DEPLOYING THE API
70

Continuous Deployment:
End to End Testing
71
http://tapetim.diq.co.il/36__The_Matrix,_1999,_Green_Falling_Code.htm
http://community.sharpdevelop.net/blogs/mattward/pages/FeatureTourUnitTesting.aspx
http://www.javalinux.it/wordpress/2008/05/19/subversion-branching-in-my-experience/
http://www.nytimes.com/2008/04/20/magazine/20Build-text.html
Automatic Tests
Merge
to Trunk
Feature
CODE
P1
P2
P3
Feedback

TDD
Testing before Coding
Coverage:
Unit Test Target: 100%
Module Target: 40%
Integration and End to End: 30%
Mocking Framework if needed
Manual QA Only when Must
72
Microsoft.VisualStudio.TestTools

Unit Test Best Practice
void FunctionName_Case_ExpectedResult() {
//ARRANGE
Patron patron = new Patron();
patron.setBalance(0);
//ACT
patron.applyFine(10);
//ASSERT
assertEquals(10, patron.fineBalance());
}
73

Code Examples
Internal: your language  External: 3
Enable social comments

Buzz: Swagger.io
75

Monitor the Business
76

Billing
http://blog.saugatucktechnology.com/appdirect-evolution-api-economy/

BillRun!
78

DEVELOPER RELATIONS
79

Invest in the Community
80

Key Topics
Documentation
Code Samples
Support Forums
Case Studies
Hype
81

Moshe Kaplan +972-54-2291978
moshe.kaplan@brightaqua.com
http://top-performance.blogspot.com

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