Memory Safety

Notes on Rust’s memory safety model, covering ownership, borrowing, and concurrency primitives.

Topics

• Ownership & Borrowing — borrowing rules, non-lexical lifetimes, shared and exclusive references, interior mutability
• Smart Pointers — Box, Arc, and the Drop trait
• Concurrency — Mutex, RwLock, atomics, spinlocks, Send/Sync traits, and synchronization/concurrency primitives
• Memory Model — stack vs. heap, segfaults, iterator invalidation
• Practical Patterns — connection pooling, PostgreSQL connections