Question 1

How to set up uWebSockets with Node.js for a real-time app?

Accepted Answer

Use the µWebSockets.js package from the repository, which wraps the C++ core. Follow the examples and user manual to quickly integrate WebSocket and HTTP routing with JavaScript.

Question 2

uWebSockets vs Socket.IO: which is better for a chat application?

Accepted Answer

uWebSockets excels in raw performance and low latency, as used in crypto exchanges, while Socket.IO offers more out-of-the-box features like automatic reconnection. Choose based on whether speed or convenience is your priority.

Question 3

Can uWebSockets be used for hosting a REST API?

Accepted Answer

Yes, it supports HTTP routing with wildcard and parameter support, as shown in the example code. However, for simple APIs without real-time needs, lighter servers might be more straightforward.

Question 4

What are the performance benchmarks for uWebSockets compared to nginx?

Accepted Answer

uWebSockets is optimized for real-time messaging and can handle encrypted traffic faster than many servers' plaintext, but specific benchmarks vary; refer to the repository's benchmark section for detailed comparisons.

Question 5

How to handle user authentication in uWebSockets?

Accepted Answer

Authentication must be implemented customly, as uWebSockets doesn't provide built-in solutions. Use middleware patterns or integrate with external libraries, as suggested in the documentation.

Question 6

Is uWebSockets scalable for large applications like social media platforms?

Accepted Answer

Yes, it's designed for high demand with multi-core support and pub/sub features, powering major crypto exchanges. Scale by spawning multiple app instances per CPU core.

Question 7

What does the licensing mean for commercial use of uWebSockets?

Accepted Answer

It uses Apache License 2.0, but modified forks require a different product name. For commercial projects, review the license terms and contact the maintainers if needed.

uWebSockets

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