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Developer Builds Open-Source AI Proxy Gateway With Sub-15ms Failover for LLM Outages

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A developer has built Selixes, an open-source edge proxy gateway designed to prevent AI agent crashes caused by LLM provider outages, rate limits, and latency spikes. The tool sits between an application and providers like OpenAI or Anthropic, automatically switching to a backup model in under 15 milliseconds if the primary connection fails mid-stream. To tackle failover latency, the system preemptively opens a background TCP connection to a fallback provider before failure occurs, rather than reacting after the fact. Selixes also uses atomic Redis operations to enforce session spending caps, acting as a circuit breaker against runaway API costs from retry loops. The gateway exposes an OpenAI-compatible endpoint, allowing teams to adopt it by simply changing a base URL without rewriting existing agent logic.

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