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skywalking-nodejs

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The NodeJS agent for Apache SkyWalking

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# Apache SkyWalking Node.js Agent

The Apache SkyWalking Node.js Agent reports distributed traces and Node.js runtime metrics to an
Apache SkyWalking OAP server. It instruments supported Node.js libraries without changes to their
source code.

[![Build](https://github.com/apache/skywalking-nodejs/workflows/Build/badge.svg?branch=master)](https://github.com/apache/skywalking-nodejs/actions?query=branch%3Amaster+event%3Apush+workflow%3A%22Build%22)
[![npm version](https://badge.fury.io/js/skywalking-backend-js.svg)](https://www.npmjs.com/package/skywalking-backend-js)
[![GitHub stars](https://img.shields.io/github/stars/apache/skywalking-nodejs.svg?label=Stars&logo=github)](https://github.com/apache/skywalking-nodejs)

## Requirements

- Node.js 20 or later.
- A compatible Apache SkyWalking OAP server. See the
  [agent and OAP compatibility guide](https://skywalking.apache.org/docs/main/next/en/setup/service-agent/agent-compatibility/).

## Install

```bash
npm install skywalking-backend-js
```

## Quick start

Start the agent before loading the modules that it must instrument:

```typescript
import agent from 'skywalking-backend-js';

agent.start({
  serviceName: 'checkout-service',
  collectorAddress: '127.0.0.1:11800',
});
```

The same values can be set with environment variables:

```bash
export SW_AGENT_NAME=checkout-service
export SW_AGENT_COLLECTOR_BACKEND_SERVICES=127.0.0.1:11800
```

See [Quick start](docs/en/setup/quick-start.md) for the full setup and a way to load the agent with
Node.js `--require`.

## Documentation

The [documentation index](docs/README.md) includes:

- setup and all configuration values;
- tracing and Node.js runtime metrics;
- supported library plugins and AWS SDK v2 behavior;
- serverless and Webpack support;
- build, test, plugin development, and release guides.

## Main features

- Automatic trace collection for Node.js HTTP, database, messaging, and framework libraries.
- SkyWalking trace context transfer between supported services.
- Twelve process-level Node.js runtime meters.
- Optional wrappers for AWS Lambda and Azure Functions.

## Contributing

Read [Build and test](docs/en/contribution/build-and-test.md) before sending a change. Plugin authors
should also read [Plugin development](docs/en/contribution/plugin-development.md).

## Contact

- Report Node.js Agent problems in the
  [Apache SkyWalking issue tracker](https://github.com/apache/skywalking/issues/new) with `Nodejs` in
  the issue title.
- Join the `dev@skywalking.apache.org` mailing list by sending a message to
  `dev-subscribe@skywalking.apache.org`.
- Join the `skywalking` channel on [Apache Slack](https://s.apache.org/slack-invite).

## License

[Apache License 2.0](LICENSE)

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