Compiled Learning Objectives

Adding quotes

• POST data from a frontend to a backend in JSON format.

Data validation

• Explain the trade-offs of doing validation on the frontend or backend.

Chat application requirements

• Explain the requirements of our chat application.
• Explain what requirements are out of scope for our chat application.

Making a non-live chat application

• Write and run a frontend and backend
• Store data passed from a user into a backend
• Display data from a backend to a user

Deploying the chat application

• Deploy a frontend and backend so it can be used on the internet.

Limitations of a single request/response

• Identify the limitations of loading a website via a single request and response.
• Give examples of functionality that relies on subsequent data transfer from the server to the client.
• Identify and explain why clients typically initiate requests.

Designing a streaming API

• Describe the trade-offs of different streaming APIs.

Repeated client requests for updates

• Stream live updates from a server by using repeated HTTP polling.

Long-polling

• Stream live updates from a server by using long-polling.
• Compare the trade-offs involved with frequent small requests vs long-polling.