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What are the parts of an HTTP request?
What does it mean that HTTP is stateless?
What is the Content-Type header for?
Which HTTP methods are safe?
Which HTTP methods are idempotent?
What is the difference between PUT and PATCH?
What do the five HTTP status classes mean?
What is the difference between 401 and 403?
What is the difference between 301 and 302?
What are the six REST constraints?
In REST, what is a resource vs a representation?
What does HATEOAS mean and which maturity level is it?
PUT vs PATCH: what does each do to a resource?
Is PATCH idempotent?
What are the two standardized PATCH body formats?
Authentication vs authorization — one line each?
When do you return 401 vs 403?
Which runs first, authN or authZ, and why?
What are the three parts of a JWT?
Is a JWT encrypted?
Why are JWTs paired with refresh tokens?
Access token vs refresh token in one line?
What does refresh token rotation with reuse detection do?
Where should each token be stored in a browser?
What is the order of the main State lifecycle callbacks?
Where do you set up resources and where do you release them?
What is the mounted flag and why guard setState with it?
What is the key difference between StatelessWidget and StatefulWidget?
What does setState() do?
When should you choose StatefulWidget over StatelessWidget?
What is a BuildContext?
Which direction does Theme.of(context) search?
Why check `mounted` before using context after await?
What is a database index and what does it cost?
What is the left-prefix rule for composite indexes?
What is a covering index?