This document summarizes an agenda for a presentation on the open-source cloud-native programming language Ballerina. The presentation covers topics like services, HTTP/GraphQL, concurrency, asynchronous I/O, Kubernetes deployment, serverless computing on AWS Lambda and Azure Functions, and observability using distributed tracing and metrics. It also lists additional Ballerina features and provides information on how to get involved with the Ballerina community.

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/