๐๐ผ๐ปโ๐ ๐ ๐ฎ๐ธ๐ฒ ๐ ๐ฒ ๐ง๐ต๐ถ๐ป๐ธ ๐ณ๐ผ๐ฟ ๐๐ป๐ด๐ถ๐ป๐ฒ๐ฒ๐ฟ๐
Steve Krug wrote a classic book called Donโt Make Me Think.
Many engineers think this book is only for UI/UX designers. They are wrong.
In the age of AI agents, engineers must turn this design principle into technical requirements. You must move from "Don't make me think" to "Don't make me wait" and "Don't make me guess."
Reducing cognitive load means focusing on three technical areas:
- Latency and Interaction
Google now uses INP (Interaction to Next Paint) to measure speed. If a user clicks a button and nothing happens for 500ms, they wonder if the app crashed.
How to fix this:
- Avoid heavy hydration that blocks the main thread.
- Use Web Workers for heavy calculations.
- Optimistic UI
Stop making users wait for server responses.
The traditional way: Click -> Loading Spinner -> Server Response -> UI Change. This creates delay.
The Optimistic way: Click -> UI Changes Instantly -> API call runs in background.
React now has the useOptimistic hook to help you do this. Even with slow internet, your app feels instant.
- Backend for Frontend (BFF)
Do not force the frontend to do heavy work.
If a page needs profile data, order history, and recommendations, do not make the frontend send three separate requests. Use a BFF pattern or GraphQL. This prevents over-fetching and keeps the frontend fast.
- Resilience and Graceful Degradation
When a system fails, do not show a 500 Internal Server Error. Users do not care about your server errors.
If a microservice fails, use a fallback. If the recommendation engine is down, show "Weekly Best Sellers" from a Redis cache instead. The user should never know a service failed.
Summary for your role:
- Frontend: Make the site feel fast by updating the UI instantly.
- Backend: Use BFF to deliver exactly the data the frontend needs.
- DevOps: Use K8s and caching to ensure users never see error codes.
This book is not just for designers. It is a guide for performance and architecture.
Source: https://dev.to/jh5_pulse/gong-cheng-shi-yan-zhong-de-dont-make-me-think-1ne4
Optional learning community: https://t.me/GyaanSetuAi