mercurius vs apollo-server-fastify
GraphQL Server Libraries for Fastify Comparison
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What's GraphQL Server Libraries for Fastify?

GraphQL server libraries provide the necessary tools to create a GraphQL API, allowing clients to request only the data they need. They facilitate the integration of GraphQL with web frameworks, enabling developers to build efficient and flexible APIs. Both Apollo Server Fastify and Mercurius are designed to work with the Fastify framework, which is known for its high performance and low overhead. These libraries streamline the process of setting up a GraphQL server, handling queries, mutations, and subscriptions while ensuring optimal performance and scalability.

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mercurius73,0322,404632 kB615 days agoMIT
apollo-server-fastify32,35613,84822.5 kB96a year agoMIT
Feature Comparison: mercurius vs apollo-server-fastify

Performance

  • mercurius:

    Mercurius is designed for speed and efficiency, taking full advantage of Fastify's architecture. It provides a lightweight solution that minimizes latency and maximizes throughput, making it an excellent choice for applications that require rapid response times and high performance.

  • apollo-server-fastify:

    Apollo Server Fastify is optimized for performance and can handle a large number of requests efficiently. It leverages Fastify's asynchronous capabilities and low overhead, making it suitable for high-traffic applications. Apollo's built-in caching mechanisms further enhance performance by reducing the number of requests to the server.

Ecosystem Integration

  • mercurius:

    Mercurius is built specifically for Fastify, ensuring seamless integration with its features such as middleware, hooks, and plugins. While it may not have as extensive an ecosystem as Apollo, it offers a straightforward approach to building GraphQL APIs within the Fastify framework.

  • apollo-server-fastify:

    Apollo Server Fastify is part of the larger Apollo ecosystem, which includes tools for client-side development, state management, and performance monitoring. This integration allows developers to leverage a wide range of resources and community contributions, enhancing the overall development experience.

Schema Management

  • mercurius:

    Mercurius offers a simpler approach to schema management, focusing on ease of use and straightforward schema definitions. While it may lack some of the advanced features of Apollo, it provides a clear and concise way to define GraphQL schemas and resolvers.

  • apollo-server-fastify:

    Apollo Server Fastify provides advanced schema management capabilities, including schema stitching and federation, which allow developers to combine multiple GraphQL schemas into a single API. This is particularly useful for large applications with multiple microservices, enabling a modular architecture.

Community Support

  • mercurius:

    Mercurius has a smaller but dedicated community, with growing documentation and support. While it may not have the same level of resources as Apollo, it is backed by Fastify's community, which can offer assistance and guidance for developers working with Fastify and Mercurius.

  • apollo-server-fastify:

    Apollo Server has a large and active community, providing extensive documentation, tutorials, and third-party tools. This support can be invaluable for developers looking to implement complex features or troubleshoot issues, making it easier to find solutions and best practices.

Learning Curve

  • mercurius:

    Mercurius is designed to be simple and straightforward, making it easier for developers to get started with GraphQL in Fastify. Its minimalistic approach allows for a quicker learning process, especially for those already familiar with Fastify.

  • apollo-server-fastify:

    Apollo Server Fastify may have a steeper learning curve due to its extensive feature set and integration with the Apollo ecosystem. Developers may need to familiarize themselves with additional concepts such as caching strategies and schema federation, which can add complexity to the initial setup.

How to Choose: mercurius vs apollo-server-fastify
  • mercurius:

    Choose Mercurius if you prefer a lightweight, high-performance GraphQL server that integrates seamlessly with Fastify. It is designed for speed and simplicity, making it a great choice for applications that prioritize performance and require minimal overhead.

  • apollo-server-fastify:

    Choose Apollo Server Fastify if you require a comprehensive GraphQL server solution with built-in features such as schema stitching, caching, and extensive community support. It is ideal for projects that may benefit from Apollo's ecosystem, including client libraries and tools for monitoring and performance tracking.

Similar Npm Packages to mercurius

mercurius is a high-performance GraphQL adapter for Fastify, designed to provide a seamless integration of GraphQL into Fastify applications. It offers a simple and efficient way to build GraphQL APIs while leveraging Fastify's speed and low overhead. Mercurius supports features like schema stitching, subscriptions, and built-in support for GraphQL middleware, making it a powerful choice for developers looking to implement GraphQL in their Fastify applications.

One notable alternative to Mercurius is apollo-server-fastify. This package is part of the Apollo Server ecosystem and provides a Fastify integration for building GraphQL APIs. Apollo Server is a widely-used library that offers a rich set of features, including support for schema definition, data sources, and built-in performance tracing. If you're already familiar with the Apollo ecosystem or need advanced features like caching and monitoring, apollo-server-fastify might be the better choice for your project.

For a detailed comparison of these two packages, you can check out the following link: Comparing apollo-server-fastify vs mercurius.

Similar Npm Packages to apollo-server-fastify

apollo-server-fastify is a community-driven GraphQL server that integrates seamlessly with the Fastify web framework. It provides a robust and efficient way to build GraphQL APIs, leveraging Fastify's high performance and low overhead. With built-in support for features like schema stitching, subscriptions, and middleware, apollo-server-fastify is an excellent choice for developers looking to create scalable and performant GraphQL applications.

While apollo-server-fastify offers a powerful solution for GraphQL APIs, there are several alternatives worth considering:

  • apollo-server-express is a popular GraphQL server that integrates with the Express framework. It provides similar features to apollo-server-fastify, but is designed for use with Express, making it a great option for developers already familiar with this widely-used web framework. With apollo-server-express, you can easily set up a GraphQL server with middleware support, making it suitable for applications that require a more extensive ecosystem of Express middleware.

  • express-graphql is a middleware for Express that allows you to create a GraphQL API using a simple and straightforward approach. It is a minimalistic solution that provides the essential features needed to set up a GraphQL server, making it ideal for developers who prefer a lightweight and flexible option. While it may not have all the advanced features of Apollo Server, it is a solid choice for simpler applications or when you want more control over your GraphQL implementation.

  • graphql-yoga is a fully-featured GraphQL server that is built on top of Express, Koa, and other frameworks. It aims to provide an easy-to-use setup with sensible defaults, making it a great choice for developers who want to get started quickly with GraphQL. graphql-yoga includes features like subscriptions, file uploads, and an integrated GraphQL playground, making it a comprehensive solution for building GraphQL APIs.

  • mercurius is a fast and lightweight GraphQL adapter for Fastify. It is designed to provide a simple and efficient way to create GraphQL APIs while taking advantage of Fastify's performance. mercurius supports features like schema stitching, subscriptions, and more, making it a great alternative for developers who prefer the Fastify framework but want a different approach to building GraphQL servers.

To compare these packages further, check out the following link: Comparing apollo-server-express vs apollo-server-fastify vs express-graphql vs graphql-yoga vs mercurius.

README for mercurius

Mercurius Logo

mercurius

CI workflow NPM version NPM downloads neostandard javascript style

Mercurius is a GraphQL adapter for Fastify

Features:

  • Caching of query parsing and validation.
  • Automatic loader integration to avoid 1 + N queries.
  • Just-In-Time compiler via graphql-jit.
  • Subscriptions.
  • Federation support via @mercuriusjs/federation, including Subscriptions.
  • Gateway implementation via @mercuriusjs/gateway, including Subscriptions.
  • Batched query support.
  • Customisable persisted queries.

Docs

Install

npm i fastify mercurius graphql
# or
yarn add fastify mercurius graphql

The previous name of this module was fastify-gql (< 6.0.0).

Quick Start

'use strict'

const Fastify = require('fastify')
const mercurius = require('mercurius')

const app = Fastify()

const schema = `
  type Query {
    add(x: Int, y: Int): Int
  }
`

const resolvers = {
  Query: {
    add: async (_, { x, y }) => x + y
  }
}

app.register(mercurius, {
  schema,
  resolvers
})

app.get('/', async function (req, reply) {
  const query = '{ add(x: 2, y: 2) }'
  return reply.graphql(query)
})

app.listen({ port: 3000 })

Examples

Check GitHub repo for more examples.

Acknowledgements

The project is kindly sponsored by:

The Mercurius name was gracefully donated by Marco Castelluccio. The usage of that library was described in https://hacks.mozilla.org/2015/12/web-push-notifications-from-irssi/, and you can find that codebase in https://github.com/marco-c/mercurius.

License

MIT

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