Frontend System Design1 min readPremium

Interface Communication Frontend System Design Interviews

Interface Communication For Frontend System Design

The “I” in the RADIO framework stands for Interface, which is partially about how the front-end system communicates with the backend (interface communication) and how it will format its request and response (API layer).

This section is critical, but it shouldn’t take more than 15 percent of your interview time unless the interviewer wants to discuss it in depth. Let’s simplify this section so that the first half is focused on the interface layer, and the following article will focus on the API design layer.

Please spend no more than 5% of your interview explaining the interface communication layer and 10% on the API layer.

Before diving into API design, determine your protocol for the API layer. The right choice depends on the nature of the app and its requirements. For example, if you’re building a chat application, real-time, two-way communication is key, so WebSockets make sense. If you’re streaming updates in one direction, such as an AI chat response, server-sent events (SSE) are a good fit. Regular... premium content.

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