# apollo-server
**Repository Path**: mirrors_hekailiang/apollo-server
## Basic Information
- **Project Name**: apollo-server
- **Description**: 🌍  Spec-compliant and production ready JavaScript GraphQL server that lets you develop in a schema-first way. Built for Express, Connect, Hapi, Koa, and more.
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: main
- **Homepage**: None
- **GVP Project**: No
## Statistics
- **Stars**: 0
- **Forks**: 0
- **Created**: 2022-04-25
- **Last Updated**: 2026-03-28
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
# 
## A TypeScript GraphQL Server for Express, Koa, Hapi, Lambda, and more.
[](https://badge.fury.io/js/apollo-server-core)
[](https://circleci.com/gh/apollographql/apollo-server/tree/main)
[](https://community.apollographql.com)
[](https://github.com/apollographql/apollo-server/blob/HEAD/CHANGELOG.md)
Apollo Server is a community-maintained open-source GraphQL server. It works with many Node.js HTTP server frameworks, or can run on its own with a built-in Express server. Apollo Server works with any GraphQL schema built with [GraphQL.js](https://github.com/graphql/graphql-js)--or define a schema's type definitions using schema definition language (SDL).
[Read the documentation](https://www.apollographql.com/docs/apollo-server/) for information on getting started and many other use cases and [follow the CHANGELOG](https://github.com/apollographql/apollo-server/blob/HEAD/CHANGELOG.md) for updates.
## Principles
Apollo Server is built with the following principles in mind:
- **By the community, for the community**: Its development is driven by the needs of developers.
- **Simplicity**: By keeping things simple, it is more secure and easier to implement and contribute.
- **Performance**: It is well-tested and production-ready.
Anyone is welcome to contribute to Apollo Server, just read [CONTRIBUTING.md](./CONTRIBUTING.md), take a look at the [roadmap](./ROADMAP.md) and make your first PR!
## Getting started
To get started with Apollo Server:
* Install with `npm install apollo-server- graphql`
* Write a GraphQL schema
* Use one of the following snippets
There are two ways to install Apollo Server:
* **[Standalone](#installation-standalone)**: For applications that do not require an existing web framework, use the `apollo-server` package.
* **[Integrations](#installation-integrations)**: For applications with a web framework (e.g. `express`, `koa`, `hapi`, etc.), use the appropriate Apollo Server integration package.
For more info, please refer to the [Apollo Server docs](https://www.apollographql.com/docs/apollo-server/v2).
### Installation: Standalone
In a new project, install the `apollo-server` and `graphql` dependencies using:
npm install apollo-server graphql
Then, create an `index.js` which defines the schema and its functionality (i.e. resolvers):
```js
const { ApolloServer, gql } = require('apollo-server');
// The GraphQL schema
const typeDefs = gql`
type Query {
"A simple type for getting started!"
hello: String
}
`;
// A map of functions which return data for the schema.
const resolvers = {
Query: {
hello: () => 'world',
},
};
const server = new ApolloServer({
typeDefs,
resolvers,
});
server.listen().then(({ url }) => {
console.log(`🚀 Server ready at ${url}`);
});
```
> Due to its human-readability, we recommend using [schema-definition language (SDL)](https://www.apollographql.com/docs/apollo-server/essentials/schema/#schema-definition-language) to define a GraphQL schema--[a `GraphQLSchema` object from `graphql-js`](https://github.com/graphql/graphql-js/#using-graphqljs) can also be specified instead of `typeDefs` and `resolvers` using the `schema` property:
>
> ```js
> const server = new ApolloServer({
> schema: ...
> });
> ```
Finally, start the server using `node index.js` and go to the URL returned on the console.
For more details, check out the Apollo Server [Getting Started guide](https://www.apollographql.com/docs/apollo-server/getting-started.html) and the [fullstack tutorial](https://www.apollographql.com/docs/tutorial/introduction.html).
For questions, the [Apollo community forum](https://community.apollographql.com) is a great place to get help.
## Installation: Integrations
While the standalone installation above can be used without making a decision about which web framework to use, the Apollo Server integration packages are paired with specific web frameworks (e.g. Express, Koa, hapi).
The following web frameworks have Apollo Server integrations, and each of these linked integrations has its own installation instructions and examples on its package `README.md`:
- [Express](https://github.com/apollographql/apollo-server/tree/main/packages/apollo-server-express) _(Most popular)_
- [Koa](https://github.com/apollographql/apollo-server/tree/main/packages/apollo-server-koa)
- [Hapi](https://github.com/apollographql/apollo-server/tree/main/packages/apollo-server-hapi)
- [Fastify](https://github.com/apollographql/apollo-server/tree/main/packages/apollo-server-fastify)
- [Amazon Lambda](https://github.com/apollographql/apollo-server/tree/main/packages/apollo-server-lambda)
- [Micro](https://github.com/apollographql/apollo-server/tree/main/packages/apollo-server-micro)
- [Azure Functions](https://github.com/apollographql/apollo-server/tree/main/packages/apollo-server-azure-functions)
- [Google Cloud Functions](https://github.com/apollographql/apollo-server/tree/main/packages/apollo-server-cloud-functions)
- [Cloudflare](https://github.com/apollographql/apollo-server/tree/main/packages/apollo-server-cloudflare) _(Experimental)_
## Context
A request context is available for each request. When `context` is defined as a function, it will be called on each request and will receive an object containing a `req` property, which represents the request itself.
By returning an object from the `context` function, it will be available as the third positional parameter of the resolvers:
```js
new ApolloServer({
typeDefs,
resolvers: {
Query: {
books: (parent, args, context, info) => {
console.log(context.myProperty); // Will be `true`!
return books;
},
}
},
context: async ({ req }) => {
return {
myProperty: true
};
},
})
```
## Documentation
The [Apollo Server documentation](https://apollographql.com/docs/apollo-server/) contains additional details on how to get started with GraphQL and Apollo Server.
The raw Markdown source of the documentation is available within the `docs/` directory of this monorepo--to contribute, please use the _Edit on GitHub_ buttons at the bottom of each page.
## Development
If you wish to develop or contribute to Apollo Server, we suggest the following:
- Fork this repository
- Install [Direnv](https://direnv.net/) (a tool that automatically sets up environment variables in project directories) or [nvm](https://github.com/nvm-sh/nvm). We use nvm to ensure we're running the expected version of Node (and we use Direnv to install and run nvm automatically).
- Install the Apollo Server project on your computer
```
git clone https://github.com/[your-user]/apollo-server
cd apollo-server
direnv allow # sets up nvm for you; if you installed nvm yourself, try `nvm install` instead
```
- Build and test
```
npm install
npm test
```
- To run individual test files, run `npm run pretest && npx jest packages/apollo-server-foo/src/__tests__/bar.test.ts`. Note that you do need to re-compile TypeScript before each time you run a test, or changes across packages may not be picked up. Instead of running `npm run pretest` from scratch before each test run, you can also run `tsc --build tsconfig.json --watch` in another shell, or use the VSCode `Run Build Task` to run that for you.
## Community
Are you stuck? Want to contribute? Come visit us in the [Apollo community forum!](https://community.apollographql.com)
## Maintainers
- [David Glasser](https://github.com/glasser/)
- [Trevor Scheer](https://github.com/trevorscheer/)
## Who is Apollo?
[Apollo](https://apollographql.com/) builds open-source software and a graph platform to unify GraphQL across your apps and services. We help you ship faster with:
* [Apollo Studio](https://www.apollographql.com/studio/develop/) – A free, end-to-end platform for managing your GraphQL lifecycle. Track your GraphQL schemas in a hosted registry to create a source of truth for everything in your graph. Studio provides an IDE (Apollo Explorer) so you can explore data, collaborate on queries, observe usage, and safely make schema changes.
* [Apollo Federation](https://www.apollographql.com/apollo-federation) – The industry-standard open architecture for building a distributed graph. Use Apollo’s gateway to compose a unified graph from multiple subgraphs, determine a query plan, and route requests across your services.
* [Apollo Client](https://www.apollographql.com/apollo-client/) – The most popular GraphQL client for the web. Apollo also builds and maintains [Apollo iOS](https://github.com/apollographql/apollo-ios) and [Apollo Android](https://github.com/apollographql/apollo-android).
* [Apollo Server](https://www.apollographql.com/docs/apollo-server/) – A production-ready JavaScript GraphQL server that connects to any microservice, API, or database. Compatible with all popular JavaScript frameworks and deployable in serverless environments.
## Learn how to build with Apollo
Check out the [Odyssey](https://odyssey.apollographql.com/) learning platform, the perfect place to start your GraphQL journey with videos and interactive code challenges. Join the [Apollo Community](https://community.apollographql.com/) to interact with and get technical help from the GraphQL community.