开源软件名称：

dapr

开源软件地址：

https://gitee.com/dapr/dapr

开源软件介绍：

Any language, any framework, anywhere

Dapr is a portable, serverless, event-driven runtime that makes it easy for developers to build resilient, stateless and stateful microservices that run on the cloud and edge and embraces the diversity of languages and developer frameworks.

Dapr codifies the best practices for building microservice applications into open, independent, building blocks that enable you to build portable applications with the language and framework of your choice. Each building block is independent and you can use one, some, or all of them in your application.

Dapr overview

We are a Cloud Native Computing Foundation (CNCF) incubation project.

Goals

Enable developers using any language or framework to write distributed applications
Solve the hard problems developers face building microservice applications by providing best practice building blocks
Be community driven, open and vendor neutral
Gain new contributors
Provide consistency and portability through open APIs
Be platform agnostic across cloud and edge
Embrace extensibility and provide pluggable components without vendor lock-in
Enable IoT and edge scenarios by being highly performant and lightweight
Be incrementally adoptable from existing code, with no runtime dependency

How it works

Dapr injects a side-car (container or process) to each compute unit. The side-car interacts with event triggers and communicates with the compute unit via standard HTTP or gRPC protocols. This enables Dapr to support all existing and future programming languages without requiring you to import frameworks or libraries.

Dapr offers built-in state management, reliable messaging (at least once delivery), triggers and bindings through standard HTTP verbs or gRPC interfaces. This allows you to write stateless, stateful and actor-like services following the same programming paradigm. You can freely choose consistency model, threading model and message delivery patterns.

Dapr runs natively on Kubernetes, as a self hosted binary on your machine, on an IoT device, or as a container that can be injected into any system, in the cloud or on-premises.

Dapr uses pluggable component state stores and message buses such as Redis as well as gRPC to offer a wide range of communication methods, including direct dapr-to-dapr using gRPC and async Pub-Sub with guaranteed delivery and at-least-once semantics.

Why Dapr?

Writing high performance, scalable and reliable distributed application is hard. Dapr brings proven patterns and practices to you. It unifies event-driven and actors semantics into a simple, consistent programming model. It supports all programming languages without framework lock-in. You are not exposed to low-level primitives such as threading, concurrency control, partitioning and scaling. Instead, you can write your code by implementing a simple web server using familiar web frameworks of your choice.

Dapr is flexible in threading and state consistency models. You can leverage multi-threading if you choose to, and you can choose among different consistency models. This flexibility enables to implement advanced scenarios without artificial constraints. Dapr is unique because you can transition seamlessly between platforms and underlying implementations without rewriting your code.

Features

Event-driven Pub-Sub system with pluggable providers and at-least-once semantics
Input and output bindings with pluggable providers
State management with pluggable data stores
Consistent service-to-service discovery and invocation
Opt-in stateful models: Strong/Eventual consistency, First-write/Last-write wins
Cross platform virtual actors
Secrets management to retrieve secrets from secure key vaults
Rate limiting
Built-in Observability support
Runs natively on Kubernetes using a dedicated Operator and CRDs
Supports all programming languages via HTTP and gRPC
Multi-Cloud, open components (bindings, pub-sub, state) from Azure, AWS, GCP
Runs anywhere, as a process or containerized
Lightweight (58MB binary, 4MB physical memory)
Runs as a sidecar - removes the need for special SDKs or libraries
Dedicated CLI - developer friendly experience with easy debugging
Clients for Java, .NET Core, Go, Javascript, Python, Rust and C++

Get Started using Dapr

See our Getting Started guide over in our docs.

Quickstarts and Samples

See the quickstarts repository for code examples that can help you get started with Dapr.
Explore additional samples in the Dapr samples repository.

Community

We want your contributions and suggestions! One of the easiest ways to contribute is to participate in discussions on the mailing list, chat on IM or the bi-weekly community calls.For more information on the community engagement, developer and contributing guidelines and more, head over to the Dapr community repo