1.
Conquering Network Distributed Applications Using the
Ballerina Programming Language
Anjana Fernando, WSO2 Inc. | @lafernando

2.
Increasing demand is causing disaggregation

3.
Everything is
An Endpoint
Functions
APIs
Data
SaaS apps
Legacy apps
Devices
Disaggregation leads to more endpoints

4.
Integration in an increasingly disaggregated world
Transactions
Circuit Breaking
Protocols
Payloads
Events
Security
Workflow
Streams
Compensation

5.
AGILE
NETWORK AWARE

6.
Batteries
Included
Networking
NATS
ActiveMq
WebSockets

7.
Agenda
○ Services
○ Concurrency
○ Async I/O
○ Connectors
○ Docker, Kubernetes, & AWS Lambda
○ Observability
○ OpenAPI

8.
Hello World

9.
caller hello
GET
Hello World

10.
Annotations

11.
caller hello
POST (name)
Hello, name!

12.
Concurrency

13.
Workers

14.
Futures

15.
Async I/O

16.
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

17.
Connectors

18.
caller RekService
POST (status)
response
Amazon Rekn
detectText (input)
response

19.
Docker & Kubernetes

20.
AWS Lambda

21.
Observability

22.
Distributed Tracing: Jaeger/Zipkin

23.
Metrics: Prometheus + Grafana

24.
OpenAPI

25.
Docker Jaeger
Kubernetes Prometheus
AWS Lambda
KNative
GitHub Actions OAuth2 / OIDC
Kafka
Istio / Envoy RabbitMQ
LinkerD AMQP
Consul
etcd Swagger/OpenAPI
gRPC / NATS
Postgres WebSub
Cassandra
MySQL Visual Studio Code
Intellij IDEA
OpenAPI
Ecosystem extensions for
disaggregated architecture

26.
Learn - Ballerina by Example
https://ballerina.io/learn/by-example/

27.
How to get involved
Learn more
Open source
Get support
http://ballerina.io
http://github.com/ballerina-platform/
Stack Overflow - #ballerina tag
Slack - https://ballerina.io/community/slack/
Demo code https://github.com/lafernando/samples/tree/master/ballerina/aws-demo

28.
Q & A

29.
THANK YOU