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Practice

Persistence Lab

⭐⭐ intermediate~40 min of coding3 challenges

A full in-memory repository, the safe-vs-injected query contrast, and honest index maintenance.

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What you will practice

  1. In-Memory Expense Repository⭐⭐ intermediate
  2. Build (Conceptually) Safe Queries⭐⭐ intermediate
  3. Keep the Index Honest⭐⭐ intermediate

Need the concept first? Re-read the lesson.