React 18: Preparing for React Server Components
Key point
React Server Components solves the data fetching waterfall problem and enables direct access to server resources.
Details
The existing React data fetching approach has suffered mainly from high latency between client and server and waterfall phenomena caused by sequential API requests. The structure is such that a child component's data request begins only after the parent component's rendering completes, degrading the overall user experience.
React Server Components (RSC) solves this problem by performing component rendering on the server. Since data is requested directly on the server (server-to-server), it reduces unnecessary client-server requests and improves performance.
The main benefits of RSC are as follows.
- Direct access to server resources: It can directly access server-side data sources such as databases, file systems, and internal services.
- Reduced bundle size: Since it is rendered in a special form rather than HTML and delivered to the client, the size of the JavaScript bundle sent to the client can be reduced.
- Efficient data fetching: While maintaining the approach where components fetch only the data they need, it prevents the waterfall problem on the client side.
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