HTTP request and Http Client

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Common Needs

When building single page applications, the common needs are

• Configure the request URL for a set of API endpoints
• Add request header, for example, add JWT Authorization header
• Config interceptors for common pre-request or response-logging logic, such as refreshing tokens, logging, or centralizing error handling.

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HttpClient

• DI: Angular provides built in http request toolset - HttpClient, and we use it generally like how we use other dependency injections.
• HttpClient supports above common needs by adding HttpInterceptor to HttpClient