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Show HN: System that keeps apps running when a server or region goes down
I’ve been working on a small system to understand how applications can stay up even when backends fail.<p>The idea is simple: instead of sending requests to a single backend, route them through a layer that can switch to another backend if something goes wrong.<p>It:<p>checks backend health (latency, errors) avoids unhealthy servers retries requests on another backend if needed<p>It’s designed as:<p>a fast routing layer (Rust) a simple control API (Python) shared state via Redis<p>One thing I found interesting is that failover only works before the response starts — after that, switching isn’t possible.<p>Still early and mostly an experiment to understand failover and reliability better. This begun as internal experiment, after recent region outages.<p>Curious how others approach this problem in production systems.
The project addresses a critical need for cloud reliability but currently lacks differentiation from established infrastructure giants like Cloudflare, Envoy, or HAProxy. As an early-stage experiment with minimal traction and no defined business model, it represents a high-risk, low-moat investment at this stage.