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Hi HN, I’ve been working on *AsyncFlow*, an open-source simulator for async/distributed backends built on top of SimPy.The idea is simple: instead of pushing code straight to prod and hoping p95/p99 latency and throughput hold, you can model your topology, generate workloads, and run scenarios offline.Define topology: for example client → load balancer → servers → edges in YAML or Python ...

https://github.com/AsyncFlow-Sim/AsyncFlow

Hi HN,I’m a theoretical-physics–turned–software engineer, and over the last several months I built AsyncFlow, an open-source discrete-event simulator for asynchronous distributed backends.Idea: create a digital twin of your service before you deploy. You define a topology in YAML (client → optional load balancer → N servers → network edges with stochastic latency) and a workload driven by a...