My slide deck from the Microservices WSO2 meetup

1. Microservice Framework for
Java
(MSF4J)
Afkham Azeez,
Director, Architecture, WSO2 Inc.

2. What is MSF4J?
A lightweight, high performance
framework for building microservices in
Java

3. Vision for MSF4J
 Lightweight & fast runtime
 Use Java annotations as a way of defining microservices APIs as
well as metrics
 Support well known & widely used methods such as JAXRS
annotations
 Provide simple ways to develop & deploy microservices

4. Vision for MSF4J
 Built-in Metrics & Analytics APIs with out of the box integration with
WSO2 Data Analytics Server (DAS)
 To be used in the WSO2 platform as a way of replacing all admin
services as well as defining other microservices for inter-component
interactions

5. MSF4J- Performance Comparison

6. MSF4J- Memory Consumption Comparison

7. MSF4J Implementation
 Transport is based on Netty 4.0
 Supports streaming
 High performance
 Low memory footprint
 5MB pack size
 Starts within 300ms

8. Download
 MSS 1.0.0 release is available at
https://github.com/wso2/msf4j/releases/tag/v1.0.0
 Refer to the getting started guide in GitHub
 A good place to start is the samples
 https://github.com/wso2/msf4j/tree/v1.0.0/samples

9. Core Features
 Quick & simple development model using simple annotations
 Lightweight & high performance
 Custom interceptors
 JWT & OAuth based security
 Metrics gathering & publishing
 Tracing of requests using a unique message ID
 Streaming input & streaming output support
 WSO2 DevStudio based tooling for generating microservices projects starting from a Swagger
API definition
 Comprehensive samples demonstrating how to develop microservices application

10. MSF4J– Flow & Thread Model

12. Runner

13. Request Streaming

14. Security
 Security is done via a central server issuing
JWT tokens
 Security interceptors verifies the signature,
expiry & claims in the token

15. Analytics & Monitoring
Supports annotations
 Timed – measures execution time
 Metered – measures rate of events
 Counted – Counts the total invocations
 HTTPMonitoring – monitors HTTP requests

16. Analytics & Monitoring

17. Metrics Output to Console

18. JMX Metrics

19. Analytics & Monitoring

20. Tooling(Swagger -> Code)
Swagger API
Definition
MSS
Code
1
2
3

21. MSF4J in Action!
https://github.com/afkham/wso2conasia2016
https://github.com/sagara-gunathunga/msf4j-intro-
webinar-samples

22. MSF4J Pet store sample

23. MSF4J Pet store sample

24. Thank You!