Rock Solid Haskell Services (Part 4)
summary
Hands-on Haskell workshop that actually builds a supervised runtime: capitis implements supervision trees with named workers, restart strategies (permanent/transient/temporary), supervisor intensity and period_seconds and live telemetry showing worker restarts and thread IDs, and demos include a web crawler and a supervised worker pool for producer/consumer patterns. Code runs in Stack/Cabal, shows restarts preventing cascading failures and how timeouts semaphores STM and circuit‑breaker ideas slot into the system notes that some helpers are bleeding edge so expect tinkering.
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