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📜 WAYPOINT LESSON

Checkpoint: Error Architecture

⭐⭐ intermediate⏳ 15 min read📍 Lesson 85 of 180

Graded checkpoint: a collecting validation pipeline with a data-carrying exception type.

Checkpoint — error architecture

You can now: guarantee cleanup with try-with-resources, translate exceptions across boundaries with chained causes, and expose domain failures as typed data. Prove it with a validation pipeline.