Data and Persistence

• Database Transactions — What transactions are, why they matter, and the problems they solve.
• Isolation Levels — How databases handle concurrent access and the trade-offs between consistency and performance.
• Database Indexing — draft
• Schema Migrations — draft

Go and Backend Engineering

• Go Concurrency Patterns — Goroutines, channels, and the reasoning behind Go's concurrency model.
• Error Handling Strategies — How Go handles errors and why the approach leads to more explicit, reliable code.
• Graceful Shutdown — How a service stops cleanly without dropping in-flight requests.
• Integration Testing — Testing that exercises real components together, not just individual units.

API and Service Design

• API Design — What makes an API consistent, predictable, and easy to work with.
• Service Communication — REST, gRPC, and how services exchange data reliably.
• API Versioning — draft

Distributed Systems

• Idempotency — draft
• Timeouts and Retries — draft
• Eventual Consistency — draft

Testing and Reliability

• Integration Testing — see Go and Backend Engineering
• Graceful Shutdown — see Go and Backend Engineering
• Race Conditions — draft

Infrastructure and Observability

• Structured Logging — draft
• CI/CD Pipelines — draft
• Health Checks — draft