Ballerina: An Open-Source, Cloud-Native Programming Language - GIDS 2021

1. Open-Source Cloud-Native Programming Language
Anjana Fernando
@lafernando

2. Integration in an increasingly disaggregated world
Transactions
Circuit Breaking
Protocols
Payloads
Events
Security
Workflow
Streams
Compensation

3. AGILE
NETWORK AWARE

4. Agenda
○ Services
○ HTTP/GraphQL
○ Concurrency
○ Async I/O
○ Kubernetes Deployment
○ Serverless
○ AWS Lambda
○ Azure Functions
○ Observability
○ Distributed Tracing
○ Metrics

5. Services

6. caller greeting
GET
Hello!

7. HTTP Service Anatomy
Service name: base path Listener object Resource return type
Resource accessor Resource name

8. Hierarchical Resources

9. Query Parameters & Data Binding

10. GraphQL
Sample: https://github.com/lafernando/samples/tree/master/ballerina/graphql/ordersvc

11. Concurrency

12. Workers

13. Futures

14. Async I/O

15. This looks like a typical blocking call,
but it’s a bit more than that…
Transparent non-blocking I/O usage promotes optimal resource usage and handling of large
number of active connections

16. Kubernetes Deployment

17. Hello World! [with k8s]
https://ballerina.io/swan-lake/learn/deployment/code-to-cloud/

18. AWS Lambda

19. AWS Lambda
https://ballerina.io/swan-lake/learn/deployment/aws-lambda/

20. AWS Lambda

21. Azure Functions

22. Scalable Serverless Data Processing Scenario
https://ballerina.io/swan-lake/learn/deployment/azure-functions/

23. https://github.com/lafernando/samples/tree/master/ballerina/azure/ocr-serverless

25. Observability

26. Distributed Tracing (OpenTelemetry): Jaeger/Zipkin

27. Metrics: Prometheus + Grafana
https://ballerina.io/swan-lake/learn/observing-ballerina-code/

28. More features...
○ Stream processing
○ Distributed transactions
○ OpenAPI
○ Java interoperability
○ Centralized package management
○ Ballerina Central
○ Network protocols: gRPC/WebSocket/WebSub/Kafka/AMQP
○ Security
○ Taint analysis
○ Authentication/Authorization framework
○ Test driven development
○ Unit tests
○ Mocking

29. How to get involved
Learn more
Open source
Get support
https://ballerina.io/learn
https://ballerina.io/community/newsletter/
http://github.com/ballerina-platform/
Stack Overflow - #ballerinalang tag
Slack - https://ballerina.io/community/slack/