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Reading list

Projects

Build and inspect an application

A Spring Boot project assembles application components into a buildable program with stated input and persistence boundaries.

Learning roadmap

Read the contract, run the source-kit checks, and inspect a rejected input before extending the application. This subject covers Spring and Spring Boot together; Java language lessons remain in their own subject.

Prerequisites

Use Java object ownership, interfaces, exceptions and Maven builds before the framework-specific lessons.

Section lessons

Continue learning

Boot Foundations, Spring Core, Web APIs, Data & Transactions, Security, Testing, Production, Exercises, Quizzes.

Curriculum

Inspect the contract and its failure cases.

  1. 1Spring Boot receipt API project: build, test and inspect the limits

Run the source-kit fixture and inspect its rejected boundary.

  1. 1Spring receipt delivery project: atomic write, guarded claim and replay

Run the local fixture and inspect the retained state.

  1. 1Spring Boot receipt delivery project: add a recoverable worker contract

Trace both accepted and rejected tenant requests.

  1. 1Spring Boot receipt API: move from local Basic auth to tenant-scoped tokens

Trace a tenant-scoped command from token to committed rows.

  1. 1Spring Boot tenant command API project: assemble the local write path

Check byte, storage and operational health boundaries.

  1. 1Spring Boot receipt import project: stage, validate and report without hiding failure

Trace ownership, retry and duplicate delivery boundaries.

  1. 1Spring project: turn the local outbox model into a measured relay

Check selected settings and the staged database startup path.

  1. 1Spring Boot project: test a versioned receipt schema before choosing deployment ownership

Follow the boundary from local fixtures to a release test.

  1. 1Spring Boot project: define the receipt service release boundary
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