Migration Checklist: From Solidity to Anchor — Forge College

Why treat a smart-contract upgrade like a flight check? A compact, repeatable migration checklist turns ad-hoc experiments into operationally safe upgrades when moving Solidity patterns into Anchor programs on Solana.

What you'll learn: This lesson consolidates prior artifacts into a practical pre-upgrade, upgrade, and post-upgrade checklist mapped to concrete files and scripts. You will learn to validate storage layout compatibility with a layout-diff script, tag and run a versioned migration runtime, and design rollback tests and monitoring checkpoints. The lesson shows how to translate tactical checks into procedural steps (preflight validation, controlled deployment and state rehydration, post-upgrade verification and handover) and how to document decision tradeoffs between proxy-style migrations and state-separation approaches. By the end you will produce migration notes with explicit commands, expected outputs, and acceptance criteria so reviewers can reproduce and verify each step.

Who this is for: Intermediate developers and engineers migrating EVM-style upgrade patterns to Anchor who already know Solidity and basic Anchor/Rust concepts. Prior familiarity with account serialization, IDL snapshots, and program deployment workflows is recommended.

Key topics covered:
- Pre-upgrade validation: storage layout checks, IDL snapshot attachment, test harness runs
- Deployment steps: versioned migration runtime, state rehydration mapping rules
- Post-upgrade verification: rollback tests, monitoring checkpoints, handover notes
- Tradeoff comparison: proxy-style vs state-separation approaches and when to choose each
- Traceability: mapping checklist items to specific artifacts and expected outputs

Ready to build reliable migrations and operational checklists? Learn more and access resources at: https://www.forge.college/

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