React Concurrent Mode (reactjs.org)

Article summary

The article discusses React's Concurrent Mode, a set of features that help React apps stay responsive and adjust to user device capabilities and network speed. Concurrent Mode introduces interruptible rendering, allowing React to pause and resume rendering as needed, and enables concurrent updates, where multiple state updates can be processed simultaneously. This feature is still experimental and subject to change. The article provides an overview of Concurrent Mode and its potential benefits, including improved user experience and reduced need for debouncing and throttling.

Main themes

• Concurrent Mode
• Interruptible Rendering
• React Performance
• Async Rendering
• UI Libraries
• Frontend Development

What commenters say

• React's Concurrent Mode is a solution to the problem of blocking rendering, which can cause stutter and poor user experience.
• The use of async/await and promises in JavaScript is not well-supported by many frameworks and libraries, leading to workarounds and complexity.
• Some developers argue that React's popularity is not solely due to its technical merits, but also due to its widespread adoption and community support.
• Others counter that React's success is a result of its ability to provide a structured and maintainable way to build complex web applications.
• There is a need for better abstractions and support for async rendering in frontend frameworks and libraries.
• State machines and reducer-based stores can be effective tools for managing async operations and side effects.
• The lack of cancelation functionality in promises and async/await can make it difficult to manage complex async workflows.
• React's Concurrent Mode is a step towards addressing the challenges of async rendering and providing a better user experience.