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production beginner

Persistence Storage Agent

Focused round-trip example for Persist.hibernate/2 and Persist.thaw/3 using ETS-backed checkpoints.

persistence storage operations ops-governance l1

Related guides and notebooks

Concept
Persistence
Understand checkpoint/restore semantics.
Guide
Persistence
Walk through persistence setup and patterns.
Livebook
Persistence
Run the companion notebook in Livebook
Explanation

What this example teaches

Interactive Demo

Run the agent and inspect state

Source Code

Read the production implementation

What you’ll learn

  • How to save agent state snapshots with Persist.hibernate/2.
  • How to restore a full agent struct with Persist.thaw/3.
  • How to validate a simple round-trip in a deterministic demo.

How it works

The demo keeps one agent id and one ETS-backed storage table.

  1. Mutate state via cmd/2 actions.
  2. Hibernate to checkpoint storage.
  3. Thaw into a new in-memory agent struct.

This keeps persistence behavior explicit without external services.