Camunda 8 Examples

A collection of technical examples demonstrating how to use Camunda 8 features and solve common implementation challenges. These examples are designed for developers who want to get started with Camunda 8 or explore specific technical patterns and integrations.

For business-focused tutorials and process blueprints, see the Camunda 8 Tutorials repository.

What's in this Repository

This repository contains standalone Maven projects (and some Python examples) that demonstrate specific technical patterns and use cases:

Getting Started & Client Usage

• camunda-client-plain-java - Basic examples using the Camunda Java client (docs)

• zeebe-client-plain-java - Examples using the Zeebe Java client (docs)

• weatherinfo-pyzeebe-connectors - Python worker example using pyzeebe with REST and SendGrid connectors

Complete Process Applications

• payment-example-process-application - Full Spring Boot application with BPMN deployment, workers, forms, and REST API. Includes Kubernetes deployment tutorial
• twitter-review-java-springboot - Spring Boot process application example

Architectural Patterns

• async-service-task - Implement asynchronous service calls as synchronous-looking tasks with idempotent requests and polling
• synchronous-response-springboot - Return synchronous responses from process instances by blocking until a specific state is reached
• event-processing - Achieve consistency when processing events from RabbitMQ/Kafka and persisting to databases
• rollback-on-error-example - Implement synchronous validation with rollback capability in an async environment
• parallel-operations - Run Camunda 7 and Camunda 8 in parallel using shared delegates

Advanced Features

• large-multi-instance-example - Handle very large sequences (40,000+ elements) using multi-instance subprocesses with chunking strategy
• ProcessMetadataListener - Generic metadata listener that provides process context information (keys, versions) as variables
• timer-testing - Unit testing approaches for timer events in Zeebe

Connectors & Extensions

• extended-connector-runtime - Extend connector runtime with custom FEEL functions using SPI
• element-template-generation - Generate element templates with dynamic dropdowns and conditional properties
• secret-provider-as-credentials-provider - Implement custom secret providers to abstract OAuth and credential management

User Interface & Task Management

• react-tasklist - Custom tasklist using Tasklist REST API with Camunda Forms rendering and webhook integration
• task-micro-frontend - Micro frontend for embedding Camunda tasks in custom tasklists

External Integrations

• powerapps-dataverse - Connect Camunda 8 REST Connector to Microsoft PowerApps Dataverse via OAuth2

How to Use These Examples

1. Clone the repository:

   git clone https://github.com/camunda-community-hub/camunda-8-examples.git
   cd camunda-8-examples

2. Navigate to an example:

   cd <example-directory>

3. Follow the README: Each example includes:

   • Purpose and use case description
   • Architecture and implementation details
   • Prerequisites and setup instructions
   • How to run and test the example

4. Requirements: Most examples require:

   • Java 17+ and Maven 3.6+ (for Java examples)
   • Python 3.8+ (for Python examples)
   • Access to a Camunda 8 cluster (SaaS or self-managed)
   • Example-specific dependencies (Docker, Kubernetes, etc.)

Prerequisites

Most examples assume you have access to a Camunda 8 environment. You can:

• Sign up for Camunda 8 SaaS (free trial available)
• Set up Camunda 8 Self-Managed using Docker Compose

Report Issues

If you encounter problems with an example, please file an issue including:

• Which example you're using
• What didn't work as expected
• Your environment (Java version, OS, Camunda 8 version, etc.)
• Steps to reproduce the problem