Create a REST based web application (Spring Boot, REST API, Spring DATA, JPA) that supports customer management:

• CRUD operations
  • New customer can be created
    • Name (max length is 100 characters)
    • Age (must be positive number)
    • Date of birth (supported date format is yyyy-MM-dd)
    • Address (max length is 200 characters, can be null)
    • Gender (M - Male, F - Female, can be null)
  • Existing customers can be fetched
    • Pagination and ordering are supported (default order by name, default pagination size=10)
  • An existing customer can be updated
    • Any details can be changed
  • An existing customer can be deleted
    • Any existing customer can be deleted
• Proper data and action validations are in place!
  • Example for failing validations:
    • Update a customer that does not exist -> Throw exception!
    • Provided customer name is null or empty! -> Throw exception!
    • etc
• Health check available
  • Endpoint to check whether service is up and running
• For write operations (CREATE, UPDATE, DELETE) audit entries to be created
  • Fields
    • action: describe the action that was executed
    • customerId: write operation on which customer (might be null)
    • request: contains the incoming request (might be null)
    • status: outcome of the action (SUCCESS, FAILED)
    • creation datetime: when the audit event got created
  • Audit entries must be created and persisted regardless the outcome of the customer write operation!
  • Audit entries can be fetched (default sorting is LATEST FIRST, default pagination size = 100)
• The class names and package names should be descriptive of the functionality it serves!

For persistent storage an in-memory H2 DB or a dockerized database can be used!

For building tool please use Maven or Gradle!

For incoming requests and outgoing responses please use JSON format!