Sergei GorlovSoftware engineer writing about backend systems and AI.https://sergeigorlov.com/The 10-Second Latency Spike That Never Happenedhttps://sergeigorlov.com/posts/prometheus-histogram-interpolation/https://sergeigorlov.com/posts/prometheus-histogram-interpolation/Our p99 jumped to 10 seconds. Nothing was actually slow. The number was an artifact of how Prometheus histograms interpolate across wide buckets.Tue, 02 Jun 2026 00:00:00 GMT