C# / Advanced: Lifetimes, Concurrency, and Runtime Design

C# β€” Advanced: Lifetimes, Concurrency, and Runtime Design

Justify memory and synchronization rules and carry them into maintainable, measurable APIs.

6 lessons Β· No account required

What you will learn

  • Review GC, Span, and borrowing lifetimes.
  • Protect compound shared-state invariants.
  • Measure performance and define secure deployment assumptions.

  1. Value Semantics, References, and Garbage Collection

    Reason from copying and reachability instead of simplistic stack-versus-heap slogans, and separate memory reclamation from resource release.

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  2. Span, Memory, and Borrowed Lifetimes

    Use contiguous-memory views without losing the lifetime, mutation, and ownership rules of their underlying storage.

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  3. Concurrency and Synchronization

    Protect complete shared-state invariants and distinguish thread-safe operations from transactional application behavior.

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  4. API Design, Immutability, and Compatibility

    Define what callers may retain, mutate, await, and inspect so type-correct changes do not silently break behavioral contracts.

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  5. Profiling and Measured Performance

    Optimize a correct bounded workload using evidence about CPU, allocation, waiting, and retention rather than source-level guesses.

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  6. Security and Runtime Release Boundaries

    Validate hostile input and release assumptions while keeping secrets, reflection, resource bounds, and deployment responsibilities explicit.

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