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uWebSockets vs ws: What are the differences?

  1. Performance: uWebSockets is known for its high-performance capabilities, providing efficient and scalable communication between the server and the clients. It utilizes asynchronous I/O and optimized memory management to handle a large number of concurrent connections. On the other hand, ws may not offer the same level of performance as uWebSockets due to its reliance on Node.js's standard libraries for handling WebSocket communications.

  2. API Design and Usability: uWebSockets has a simple and intuitive API design, making it easy to use and understand. It provides clean abstractions for managing WebSocket connections and handling events. In contrast, ws offers a more flexible and versatile API that allows developers to have more control over the WebSocket communication process. However, this increased flexibility can make the API more complex and may require a steeper learning curve for beginners.

  3. Binary Support: uWebSockets provides built-in support for sending and receiving binary data over WebSocket connections. This allows developers to efficiently transfer binary data such as images, audio, or video without the need for additional encoding or decoding. On the other hand, ws may require additional code or libraries to handle binary data effectively, potentially adding complexity to the development process.

  4. Scalability: uWebSockets is designed to be highly scalable, allowing developers to handle a large number of concurrent connections with minimal resource consumption. It achieves this scalability through the use of asynchronous I/O and event-driven programming. While ws can also handle a decent number of concurrent connections, it may not offer the same level of scalability as uWebSockets when dealing with a significantly large number of clients.

  5. WebSocket Extensions: uWebSockets supports various WebSocket extensions that enable additional functionality beyond the standard WebSocket protocol. These extensions can include compression, authentication, or custom protocols, enhancing the capabilities of the WebSocket communication. However, ws may have limited or no support for such extensions, restricting the ability to add extra functionality to the WebSocket protocol.

  6. WebSocket Server Clustering: uWebSockets provides built-in support for WebSocket server clustering, allowing developers to scale WebSocket servers across multiple machines or processes. This clustering capability ensures high availability, fault tolerance, and efficient utilization of resources. Conversely, ws may not offer this built-in clustering functionality, requiring developers to implement custom solutions for WebSocket server clustering.

In Summary, uWebSockets outshines ws in terms of performance, API design, binary support, scalability, WebSocket extensions, and WebSocket server clustering.

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What is uWebSockets?

It is a simple to use yet thoroughly optimized implementation of HTTP and WebSockets. It comes with built-in pub/sub support, HTTP routing, TLS 1.3, IPv6, permessage-deflate and is battle tested as one of the most popular implementations, reaching many end-users daily.

What is ws?

It is a simple to use, blazing fast, and thoroughly tested WebSocket client and server implementation.

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Oct 3 2019 at 7:13PM

Ably Realtime

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