The Heisenbug lurking in your async code (Python)

1. CPython

   1 1,495 66,927 10.0 Python

   The Python programming language

   

   There's a GitHub issue to fix this, arguing that the doc fixes are insufficient, consider it to be a design mistake, and argue that it can be changed without breaking backwards compatibility (current GC behavior is not deterministic): https://github.com/python/cpython/issues/91887

   Latest reply from GvR is invoking Chesterton's Fence.

2. InfluxDB

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3. node

   2 49 1,145 8.5 Go

   Mysterium Network Node - official implementation of distributed VPN network (dVPN) protocol (by mysteriumnetwork)

   

   Yes, it's visible on goroutine profile, provided by built-in profiler pprof. E.g.: https://github.com/mysteriumnetwork/node/issues/5311#issueco...

4. trio

   3 19 6,512 9.8 Python

   Trio – a friendly Python library for async concurrency and I/O

   

   I'll +1 the Trio shoutout [1], but it's worth emphasizing that the core concept of Trio (nurseries) now exists in the stdlib in the form of task groups [2]. The article mentions this very briefly, but it's easy to miss, and I wouldn't describe it as a solution to this bug, anyways. Rather, it's more of a different way of writing multitasking code, which happens to make this class of bug impossible.

   [1] https://github.com/python-trio/trio

   [2] https://docs.python.org/3/library/asyncio-task.html#task-gro...

5. DistorteD

   4 17 18 8.1 Ruby

   Ruby multimedia toolkit with deep Jekyll integration 🧪

   

   I experienced a heisenbug exactly like this in Ruby when trying to `while case Ractor::receive`: https://github.com/okeeblow/DistorteD/blob/dd2a99285072982d3...

6. uBlock-Origin-dev-filter

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7. SaaSHub

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