Rest Client

Overview

A Rest Client is the tool or code module you use to make server-side API requests.

• Your server acts as a “client” to fetch data from an external API
• Server-to-server communication

• The typical flow:
  1. A user’s client (like a web browser) sends a request to your server.
  2. Your server then sends its own request to an external server (e.g., a third-party API) to get the necessary data.
• A great real-world example: calling the GPT API
  • Your server would act as a Rest Client to send a prompt to OpenAI’s server and receive a response.
  • In Spring Boot, for AI services specifically, you can use Spring AI ⇒ provides a convenient abstraction over various LLM provider APIs
• CORS (Cross-Origin Resource Sharing)
  • Applies to User -> Your server, but does not apply to Your server -> external server