helidon-io/helidon
Helidon
Helidon is a Java microservices framework designed for building cloud-native applications. It provides a virtual thread web server to handle high-volume concurrent network requests and implements MicroProfile specifications, including JAX-RS and CDI, to ensure interoperability and standardization.
The framework functions as a multi-protocol API gateway, supporting the delivery of data through REST, GraphQL, and gRPC. It includes a native compiler that transforms Java bytecode into standalone native executables to reduce memory footprint and startup time.
The platform covers functional-reactive programming, distributed service observability through health checks and metrics, and hierarchical configuration management. It also provides database connectivity and a command-line interface for project bootstrapping and lifecycle management.
Features
- Cloud-Native Frameworks - Provides a Java framework optimized for containerized and serverless cloud environments with native compilation support.
- CDI and JAX-RS Implementations - Implements standard Java enterprise specifications, specifically CDI and JAX-RS, to ensure microservice interoperability.
- Native AOT Compilation - Converts Java applications into small-footprint native binaries to significantly reduce startup time and memory usage.
- Observability API Standards - Applies a consistent set of standardized APIs for telemetry and core profiles to ensure service interoperability.
- Multi-Protocol Support - Provides multi-protocol support enabling the delivery of data through REST, GraphQL, and gRPC interfaces.
- Ahead-Of-Time Compilation - Transforms Java bytecode into standalone machine code binaries to minimize startup time and memory overhead.
- Virtual Thread Executors - Utilizes virtual thread executors to map each connection to a lightweight Java virtual thread for high-volume concurrency.
- Web Server Virtual Threading - Ships a high-performance web server that uses Java virtual threads to handle high-volume concurrent requests.
- Cloud-Native Java Frameworks - Provides a comprehensive Java framework for building cloud-native applications with functional-reactive programming support.
- Unified Observability Interfaces - Implements unified observability interfaces for integrating health checks, metrics, and tracing across distributed environments.
- Service Observability Integrations - Integrates standardized health checks, metrics, and distributed tracing for monitoring service reliability in clusters.
- HTTP Request Handling - Provides high-performance HTTP request handling utilizing Java virtual threads to process high volumes of concurrent traffic.
- High-Performance HTTP Servers - Implements a high-performance HTTP server utilizing virtual threads for high-throughput and low-latency request handling.
- HTTP Request Routing - Implements a routing system that maps incoming network paths to specific service handlers based on predefined patterns.
- Application Project Bootstrapping - Offers a CLI and predefined archetypes for generating the initial structure and dependencies of new applications.
- Global Configurations - Centralizes framework-wide system settings using a single global configuration instance accessible application-wide.
- Standalone Binaries - Generates standalone native binary executables from Java bytecode to minimize startup time and memory footprint.
- Project Lifecycle Management Tools - Provides command-line tools to automate the generation, building, and continuous development lifecycle of applications.
- API Gateway - Functions as an API gateway that maps requests to multiple backend service protocols like REST, GraphQL, and gRPC.
- Hierarchical Configuration Systems - Provides a hierarchical configuration system that resolves settings across multiple nested sources into a single instance.
- Automatic Dependency Discovery - Automatically discovers and registers server extensions and features based on dependencies present on the classpath.
- Functional Reactive Programming Frameworks - Implements a functional-reactive programming model to process asynchronous data streams and maintain high throughput.
- Classpath Service Discovery - Automatically detects and registers server features and extensions by scanning the application classpath at runtime.
- Reactive & Messaging - Supports reactive messaging and streams to manage asynchronous data flow and communication between independent microservices.
- Microservice Management CLIs - Automates the setup and management of microservice components across different operating systems via a dedicated CLI.
- Multi-Protocol API Design - Supports multi-protocol API design by exposing service data through REST, GraphQL, and gRPC.
