Advanced asyncio: Solving Real-world Production Problems
summary
Builds a simplified chaos-monkey service that listens to pub/sub and restarts hosts, showing concrete code: uses asyncio.create_task and asyncio.gather(return_exceptions=True) to fan out work, uses loop.add_signal_handler and loop.set_exception_handler for graceful shutdown and global error capture, and demonstrates that asyncio.shield still gets cancelled during process shutdown (surprising). Covers threads with ThreadPoolExecutor and loop.run_coroutine_threadsafe, tests with pytest-asyncio and async_test, and profiles with cProfile → pyprof2calltree/KCacheGrind and line_profiler.
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chapters (24)
- 0:00Introduction
- 1:56asyncio
- 2:30Hello World Examples
- 5:00Simple Publisher
- 7:00Multiple Messages
- 8:51Finalization
- 10:54Review
- 13:21Signal Handler
- 14:55Shield
- 16:23Cleanup
- 17:27Handling exceptions
- 18:26Handling messages
- 20:03Working with threads
- 21:18Threadsafe API
- 22:24Testing
- 27:47Closing the Loop
- 30:38Debugger
- 31:14Debug Mode
- 33:04AAODebug
- 34:03Event Loop
- 34:54Kcash Grind
- 36:16Line Profiler
- 37:49Profiling
- 39:25Spotify
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