type Person record string name; int age; string email?; // optional field ; Person p = name: "Alice", age: 30 ; Arrays & Maps int[] numbers = [1, 2, 3]; map<string> colors = red: "#FF0000", green: "#00FF00" ; 5. Services & Listeners A service is a collection of remote methods (resources) attached to a listener (e.g., HTTP listener). HTTP Service Example import ballerina/http; service /api on new http:Listener(9090) resource function get greeting(string name) returns string return "Hello, " + name;
Here’s a comprehensive guide to , a modern, open-source programming language designed for cloud-native application integration and microservices development. 1. What is Ballerina? Ballerina is a graph-oriented, compiled language that treats distributed system integration as a first-class concern. It provides built-in support for network interactions, data transformations, and service resilience, making it ideal for APIs, integrations, and microservices.
curl http://localhost:9090/api/greeting/John Call external services using built-in clients. ballerina
brew install ballerina
int res1 = wait f1; string res2 = wait f2; type Person record string name; int age; string email
public function main() future<int> f1 = start task1(); future<string> f2 = start task2();
worker w2 returns int return 20;
Run tests: