fix: instance-aware frontline routing to prevent 503s in regions without instances by Flo4604 · Pull Request #5267 · unkeyed/unkey
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Mar 18, 2026
…out instances Frontline was routing to local sentinels without checking if the region had running instances, causing 503s. Now the router checks instance presence before selecting a sentinel, and falls back to a region that actually has running instances. Also consolidates routing logic: handler is now a thin 3-line caller, router owns all decisions via a single Route() call, and proxy dispatches via Forward().
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