SysLab - The flight simulator for backend engineers

Hey Product Hunt 👋 I’m Soumya, the maker of SysLab. The idea for SysLab came from something I kept noticing while learning system design and building projects: A lot of us can explain concepts like load balancing, caching, sharding, queues, or consistent hashing in interviews… …but very few actually get to experience what happens when systems fail in production. You can watch hours of system design videos and still freeze the first time: * traffic spikes hit * databases slow down * queues back up * latency explodes * services start timing out I wanted to build something more interactive and realistic than static diagrams or whiteboard explanations. So SysLab became an experiment: “What if engineers could practice system design the same way pilots use flight simulators?” Instead of only learning theory, you enter live scenarios, monitor system behavior, respond to failures, and understand the tradeoffs behind scaling decisions. While building this, the biggest challenge was balancing: * realism * usability * learning experience Early versions were too complex and felt like DevOps dashboards 😅 Over time, I shifted the focus toward guided simulations and visual feedback so the platform feels educational, practical, and engaging at the same time. This is still the beginning, and I’d genuinely love feedback from developers, students, backend engineers, and interview-prep warriors. A few things I’d especially love feedback on: * Which scenarios would you want to practice? * What production/system design concepts feel hardest to truly understand? * What would make this genuinely useful for your learning or work? Thanks so much for checking out SysLab 🚀