This lesson develops Spring Data JPA, Transactions, Database Migrations, and Performance within Java Spring Boot.
The activity is anchored to a secure order-management REST service built with Spring Boot, persisted transactionally, tested across layers, observed in production, and packaged for container deployment, keeping every implementation, analysis, administration, or support decision specific to this course.
Demonstrate entities, relationships, repositories, queries, projections, and specifications within a secure order-management REST service built with Spring Boot, persisted transactionally, tested across layers, observed in production, and packaged for container deployment, then capture the exact configuration, command, transaction, report, trace, or code evidence that proves the expected result.
Implement a controlled workshop covering transactions, isolation, propagation, locking, and consistency and Flyway or Liquibase migrations, seed data, rollback, and environments, then test a failure, exception, or business-control scenario involving N+1 issues, fetch plans, indexing, connection pools, and query evidence.
The Spring Data JPA, Transactions, Database Migrations, and Performance result must be reproducible, traceable to approved inputs, and consistent with expected Oracle product or business-process behavior.
Diagnose issues in entities, relationships, repositories, queries, projections, and specifications, transactions, isolation, propagation, locking, and consistency, Flyway or Liquibase migrations, seed data, rollback, and environments, or N+1 issues, fetch plans, indexing, connection pools, and query evidence without making an unverified production change.
Learners isolate the smallest proven cause, apply a reversible correction, rerun validation, and record the preventive action.
Complete a validated implementation or analysis for Spring Data JPA, Transactions, Database Migrations, and Performance and defend the result with documented evidence.