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Fastify vs Restify: What are the differences?


Fastify and Restify are two popular frameworks used for building web applications. While they both have similar purposes, there are several key differences between the two.

  1. Routing and Middleware: One key difference between Fastify and Restify is in how they handle routing and middleware. Fastify uses a plugin-based architecture that allows for easy integration of third-party plugins, while Restify has a built-in routing and middleware system. This means that Fastify provides more flexibility in terms of customization and extensibility.

  2. Performance: Fastify is known for its exceptional performance, as it is built using Node.js core modules. It uses an asynchronous, non-blocking approach which allows for high throughput and low response times. On the other hand, Restify has a simpler architecture and is optimized for handling RESTful APIs, making it a good choice for simpler, lightweight applications.

  3. Error Handling: Fastify and Restify have different approaches when it comes to error handling. Fastify provides a powerful error handling mechanism that allows for detailed error reporting and logging. It also supports user-defined error handling functions. Restify, on the other hand, provides a simpler error handling mechanism that is focused on returning standardized error responses.

  4. Validation: Fastify has built-in support for request validation and serialization using JSON Schema. It provides a declarative way to define request and response payloads, making it easier to validate and transform data. Restify, on the other hand, does not have built-in validation support and requires additional libraries or manual validation code.

  5. Community and Ecosystem: Fastify has a growing community and a vibrant ecosystem of plugins and extensions. It is actively maintained and has a large number of contributors. This means that there is a wide range of functionality and third-party integrations available for Fastify. Restify, on the other hand, has a smaller community and ecosystem, although it still has a dedicated user base.

  6. Use Cases: Due to its lightweight and high-performance nature, Fastify is a good choice for building high-traffic web applications or APIs that require low latency and high throughput. It is well-suited for microservices architectures. Restify, on the other hand, is designed specifically for building RESTful APIs and is a good fit for simple, lightweight applications that do not require advanced features or high performance.

In summary, Fastify and Restify have different architectural approaches and cater to different use cases. Fastify provides more flexibility, performance, and advanced features, making it a good choice for high-performance web applications and microservices. Restify, on the other hand, is focused on simplicity and building RESTful APIs for simpler applications.

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Pros of Fastify
Pros of Restify
  • 21
  • 13
    Easy to use
  • 12
  • 9
    Open source
  • 9
  • 6
    Highly customizable
  • 4
    Developer friendly
  • 4
  • 4
    Low overhead
  • 4
    Built-in Typescript support
  • 3
  • 3
    Schema based
  • 3
  • 1
    Semantically REST correctness

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Cons of Fastify
Cons of Restify
  • 1
    Small community
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    What is Fastify?

    Fastify is a web framework highly focused on speed and low overhead. It is inspired from Hapi and Express and as far as we know, it is one of the fastest web frameworks in town. Use Fastify can increase your throughput up to 100%.

    What is Restify?

    A Node.js web service framework optimized for building semantically correct RESTful web services ready for production use at scale. it optimizes for introspection and performance.

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    What are some alternatives to Fastify and Restify?
    Koa aims to be a smaller, more expressive, and more robust foundation for web applications and APIs. Through leveraging generators Koa allows you to ditch callbacks and greatly increase error-handling. Koa does not bundle any middleware.
    hapi is a simple to use configuration-centric framework with built-in support for input validation, caching, authentication, and other essential facilities for building web applications and services.
    Go is expressive, concise, clean, and efficient. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel type system enables flexible and modular program construction. Go compiles quickly to machine code yet has the convenience of garbage collection and the power of run-time reflection. It's a fast, statically typed, compiled language that feels like a dynamically typed, interpreted language.
    Express is a minimal and flexible node.js web application framework, providing a robust set of features for building single and multi-page, and hybrid web applications.
    Nest is a framework for building efficient, scalable Node.js server-side applications. It uses progressive JavaScript, is built with TypeScript (preserves compatibility with pure JavaScript) and combines elements of OOP (Object Oriented Programming), FP (Functional Programming), and FRP (Functional Reactive Programming). Under the hood, Nest makes use of Express, but also, provides compatibility with a wide range of other libraries, like e.g. Fastify, allowing for easy use of the myriad third-party plugins which are available.
    See all alternatives