.NET Runtime and Concurrency

The courses, in order

1. 01
   Start here

   C# Async Reliability Interview Path

   Propagate cancellation and respect end-to-end time budgets. • Bound concurrency and apply backpressure. • Handle fan-out failures, retries and shutdown. • Test async behavior with controlled timing.

   Intermediate · 12 lessons · 3 h 10 min

2. 02
   C# Concurrency Lab: Cancellation, Coordination and Backpressure

   Own task completion, failures and cancellation. • Coordinate shared state and bound parallel work. • Choose queue capacity and overload behavior. • Test shutdown and concurrency deterministically.

   Intermediate · 7 lessons · 1 h 30 min · 6 practice tests

3. 03
   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.

   Advanced · 12 lessons · 2 h 56 min · 3 practice tests