A step-by-step guide to building a Spring Boot REST API with an H2 embedded database on a Raspberry Pi. Covers project setup via Spring Initializr, defining JPA entities for sensors and measurements, creating JPA repositories for CRUD operations, and exposing REST endpoints. Also demonstrates using Swagger UI for testing, enabling the H2 console for database inspection, and configuring file-based persistence for deployment on the Raspberry Pi instead of in-memory storage.
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