go-kratos/kratos
Kratos
Kratos is a toolkit for building cloud-native microservices in Go. It provides a comprehensive suite of framework primitives, including a dedicated toolset for API-first development using Protobuf to generate server and client code for gRPC and HTTP.
The project is distinguished by its pluggable service infrastructure, which allows for the swapping of configuration stores, service registries, and data encoding formats. It utilizes a composable middleware pipeline to inject cross-cutting concerns such as authentication, request validation, and circuit breaking into the service flow.
The framework covers broad capability areas including cloud-native observability via OpenTelemetry for logging, metrics, and tracing, as well as traffic management through circuit breakers and request interception. It further supports service discovery, asynchronous event distribution, and automated development lifecycle tooling for project bootstrapping and static analysis.
Features
- Cloud Native Development Frameworks - Provides a comprehensive framework for building scalable, resilient cloud-native microservices in Go.
- Pluggable Architectures - Decouples core logic from external dependencies using a pluggable architecture based on Go interfaces.
- API Code Generators - Provides tools to automatically produce server stubs and client libraries from API interface definitions.
- API-First Development Toolsets - Offers a dedicated toolset for API-first development using Protobuf to generate server and client code for gRPC and HTTP.
- Schema-Driven Code Generators - Produces type-safe server and client boilerplate from Protobuf schema definitions.
- HTTP Transports - Provides robust implementations of HTTP and gRPC transport layers with integrated TLS encryption.
- Multi-Protocol Routing - Implements a single routing layer to handle multiple communication protocols like HTTP and gRPC in one service.
- Protocol-Agnostic Transport Layers - Provides a protocol-agnostic transport layer to route traffic regardless of whether it uses HTTP or gRPC.
- API-First Design Workflows - Enables an API-first workflow using Protobuf to generate consistent gRPC and HTTP server and client code.
- Application Configuration - Manages application settings by loading configurations from local files or distributed stores.
- Modular Extension Architectures - Implements a modular architecture that allows swapping configuration stores, service registries, and data encoding formats.
- Composable Middleware Pipelines - Ships a composable middleware pipeline to inject cross-cutting concerns like authentication and recovery into the service flow.
- Service Instance Lifecycle Management - Provides a service registry to track available service instances across a distributed cluster.
- Distributed Observability Systems - Integrates structured logging, metrics, and tracing via OpenTelemetry to monitor health across distributed microservices.
- Distributed Tracing Contexts - Attaches metadata and trace IDs to request contexts to synchronize logs, metrics, and spans across services.
- Observability Suites - Provides an integrated observability suite for collecting and analyzing logs, metrics, and traces via OpenTelemetry.
- Go Web Frameworks - Acts as a comprehensive toolkit for building high-performance cloud-native microservices using the Go programming language.
- Middleware Pipelines - Features a composable middleware system to intercept and process network traffic through modular request and response stages.
- Service Middleware Pipelines - Implements a composable middleware pipeline for injecting authentication, JWT validation, and data validation into the service flow.
- API Compatibility Analysis - Analyzes Protobuf files for breaking changes and style violations to ensure backward compatibility.
- Microservice Project Scaffolding - Ships a command-line tool to create a standardized project structure and runtime environment for microservices.
- Server Boilerplate Generators - Automates the creation of server-side boilerplate and error handling code from API schemas.
- Service Meshes - Manages inter-service traffic using gRPC, circuit breakers, and service discovery to ensure system stability.
- Circuit Breakers - Prevents cascading failures by wrapping remote service calls in a circuit breaker state machine.
- System Stability Protections - Prevents cascading failures by implementing combined rate limiting and circuit breakers to manage traffic spikes.
- Access Control - Implements systems to authenticate requests and restrict access to protected resources based on security policies.
- JWT Authentication - Provides middleware to validate JSON Web Tokens within the request pipeline to secure service endpoints.
- API Contract Linting - Analyzes Protobuf definitions for style violations and breaking changes to ensure API contract integrity.
- Request Interception Middleware - Provides request interception middleware for cross-cutting concerns such as logging, metrics collection, and panic recovery.
- Request Validation - Provides middleware and utilities to verify that incoming HTTP request data meets specified constraints before processing.
- Metric Collection - Provides capabilities to gather and export quantitative performance data and operational telemetry to monitoring platforms.
- Monitoring and Observability - Integrates logging and telemetry via standard libraries to provide visibility into service health and performance.
- Telemetry Collectors - Includes telemetry collectors to aggregate metrics, traces, and logs for monitoring health across complex architectures.
- JSON Encoding - Implements flexible serialization of data into JSON format using standard or Protobuf-specific semantics.
- Request Data Binding - Maps incoming HTTP request data from URLs, queries, and forms into structured Go objects.
- Distributed Systems - Modular microservices framework.
- Microservice Frameworks - Cloud-native framework designed for microservice development.
- Microservices and RPC - Cloud-native microservices framework.
- Web Frameworks - Microservices-oriented framework designed for high-concurrency systems.
