1. Agility with Services – The eBay Way

2. eBay built on SOA
TOMMOROW
TODAY
FUTURE

3. Project Turmeric – eBay Open source initiative
Built on top of Axis
Capabilities
Monitoring
Documentation framework
Policy based authentication
Eclipse plug-ins
Support for variety of formats like JSON, XML, Name Value pair
Tools for managing re-usable types
Type and error libraries

4. Challenges Testability Performance Transformations Discover services
Functional testing of services
Performance
Improving performance at the wire level
Low framework overhead (~2 ms)
Transformations
Rest enablement
Fast turn around times

5. SOA Express What is SOA Express ? Marry Governance and testability
Lightweight
Automated
Test across environments
Discover services based on a taxonomy
Service consumer
Service producer
Integrated with SOA Repository

6. Performance – The problem
Data formats to consider
XML
JSON
Name value
Reduce serialization / de-serialization time
Ensure all formats can be consumed / produced by the same interface
Reduce payload size where possible

7. Performance – Protocol buffers
Google’s proprietary format
Open source
Define messages through proto files
Smaller packages to transmit over the wire
Faster serialization / de-serialization

8. Performance – Why Protocol buffers ?
What about avro / thrift / msg-pack ?
Google’s proto objects can be adapted to eBay’s POJOs
Introducing new-message-format-X into the midst is easy
Efficient format for internal clients
10x improvement in wire time

9. Transformations – The problem
Clients require different formats
RSS
ATOM
JSON
XML
Rest enable services – SOA and ROA
Flexible and Fast

10. Transformations – ESB Format conversion through mediators
Domain specific languages (DSL) define conversion
Transformation framework pluggable at any layer
Dynamic updates to transformations

11. Transformations – Why ESB ?
Why not XSLT ?
Handle 700 million calls per day
Can scale horizontally
Monitoring with JMX
Blends in with service routing
Introduce additional mediators seamlessly

12. Thank you
Questions ?