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    .NET Runtime, Memory and Performance: back to the track

    Guided course · .NET Runtime, Memory and Performance

    C# Memory for Interviews: Spans and Pooled Buffers

    • Parse and write data with spans and buffers.
    • Manage pooled memory and ownership across async boundaries.
    • Understand ref struct rules and low-level fast-path risks.
    • Measure allocations before claiming an improvement.
    Advanced3 modules · 12 lessons · 2 h 56 min · 3 practice tests · 2 free
    Start the courseSave

    Module 1 · Memory and ownership in modern C#

    2 lessons · 17 min
    1. 01Allocation-Aware Parsing with ReadOnlySpan<char> in C#Free, video, 1 practice test9 min
    2. 02Safe ArrayPool<byte> Ownership and Finally-Based ReturnsFree, video, 1 practice test8 min

    Module 2 · Buffers, Spans and Zero-Copy I/O

    9 lessons · 2 h 4 min
    1. 03stackalloc Safely: Size Thresholds and Pooled Fallbacks (included with Full Access)14 min
    2. 04Memory<T> Across await, and IMemoryOwner<T> Ownership (included with Full Access)14 min
    3. 05IBufferWriter<T>: Writing UTF-8 Output Without Intermediate Strings (included with Full Access)14 min
    4. 06Parsing UTF-8 Bytes Directly: u8 Literals, Utf8Parser and IUtf8SpanParsable (included with Full Access)13 min
    5. 07string.Create, SearchValues and Span Splitting (included with Full Access)13 min
    6. 08System.IO.Pipelines: Framing Messages Split Across Reads (included with Full Access)16 min
    7. 09Measuring Allocations Honestly (included with Full Access)13 min
    8. 10CollectionsMarshal and MemoryMarshal: Fast Paths and Their Traps (included with Full Access)13 min
    9. 11ref struct Rules: scoped, ref Fields and allows ref struct (included with Full Access)14 min

    Module 3 · Practice and Assessment

    1 lesson · 35 min
    1. 12Final Mock Interview: 25 Questions on Spans, Buffers and Memory (included with Full Access)35 min

    Practice tests

    C# Memory: Parsing and Buffer Ownership Practice10 questions · 10 marksFree

    TechInterviewNotes Editorial Team ·