Spring Boot Annotations Mastery — Complete Developer Guide

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Description

Every Spring Boot developer has stared at an annotation wondering what it actually does. This is the guide the author wished existed. **Contents** - Part 1: Core annotations (10 pages): @SpringBootApplication, @Configuration, @Bean, the @Component family, @Value and more - Part 2: REST annotations (10 pages): @RestController, HTTP method mappings, @PathVariable vs @RequestParam, @RequestBody, @ControllerAdvice - Part 3: Dependency injection (10 pages): @Autowired, @Qualifier, @Primary, @Scope, @Lazy - Part 4: JPA & data (12 pages): @Entity, relationships, @Query, @Transactional, auditing - Part 5: Validation (10 pages): @Valid, @NotNull, @NotBlank, @Size, @Email, @Pattern, custom validators **Features** - Real copyable code - Interview questions per annotation - Comparison tables - Print-friendly A4 format