start with the idea before the implementation.
the mechanisms you need to reason about.
App Router
App Router is studied through intuition implementation evidence and trade-offs. The goal is to be able to explain the mechanism and verify it with a concrete test rather than only repeat a definition.
Server components
Server components is studied through intuition implementation evidence and trade-offs. The goal is to be able to explain the mechanism and verify it with a concrete test rather than only repeat a definition.
Client components
Client components is studied through intuition implementation evidence and trade-offs. The goal is to be able to explain the mechanism and verify it with a concrete test rather than only repeat a definition.
Route handlers
Route handlers is studied through intuition implementation evidence and trade-offs. The goal is to be able to explain the mechanism and verify it with a concrete test rather than only repeat a definition.
Caching
Caching is studied through intuition implementation evidence and trade-offs. The goal is to be able to explain the mechanism and verify it with a concrete test rather than only repeat a definition.
turn the lesson into evidence.
build a data page
Build the smallest version first. Record the input, expected output, measured result and one failure you discovered.
add a client interaction
Build the smallest version first. Record the input, expected output, measured result and one failure you discovered.
create an API route
Build the smallest version first. Record the input, expected output, measured result and one failure you discovered.
prove you can explain and decide.
avoid leaking secrets
ask cortex to test me →understand hydration
ask cortex to test me →choose caching intentionally
ask cortex to test me →what usually goes wrong.
unnecessary client components
Detect this early by defining a baseline, a measurable signal and a condition that would cause you to stop or redesign the approach.
server/client boundary bugs
Detect this early by defining a baseline, a measurable signal and a condition that would cause you to stop or redesign the approach.
accidental dynamic rendering
Detect this early by defining a baseline, a measurable signal and a condition that would cause you to stop or redesign the approach.
Create a short Next.js engineering note with one working artifact one metric one failure case and one decision about when you would or would not use it.
Save the result in your portfolio or project repository. A strong learning artifact should make your assumptions, metrics and failure analysis visible.