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📜 WAYPOINT LESSON

Checkpoint: async

⭐⭐⭐ advanced⏳ 12 min read📍 Lesson 196 of 265

Synthesis: ValueTask discipline and cancellation correctness under real execution.

Checkpoint: async

The graded task pairs the two disciplines that decide production async quality: ValueTask fast-path discipline (cache hit = no allocation, no await) and timeout-as-cancellation (translate OCE into TimeoutException, cancel the linked source). The practice set adds linked-token races, async-stream pipelines, and diagnosing the double-await bug live.