Jolie – The First Programming Language for Microservices

In plain words

Jolie is a programming language designed specifically for building microservices. Rather than organizing code around objects or functions, it treats services as the fundamental building blocks, which can be relocated and replicated independently. The language prioritizes API design through a contract-first approach and supports both synchronous and asynchronous communication. It includes built-in features for defining data models with types and automatically handling data transformations, making it suitable for developers building service-oriented software systems.

written from the facts on this page · September 2026

From the sources

Jolie crystallises the programming concepts of service-oriented computing as linguistic constructs. The basic building blocks of software are not objects or functions, but rather services that can be relocated and replicated as needed. A composition of services is a service. Jolie is a contract-first programming language, which puts API design at the forefront. It supports both synchronous and asynchronous communication. Data models are defined by types that support refinement (in red on the right), and DTO (Data Transfer Objects) transformations are transparently managed by the interpreter. Jolie code is always contained in services, which you can always move from being local to remote and…from jolie-lang.org

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