May 13, 2024 · Operations

Root Cause Analysis of Intermittent Timeout Issues in the Sirius Service Caused by RAID Card Consistency Checks

This article details the investigation of sporadic interface timeouts in the Sirius real‑time pricing service, revealing a weekly pattern linked to RAID controller consistency checks that cause IO spikes, logback queue blockage, and ultimately Dubbo client‑side timeouts, and proposes mitigation steps and general performance‑troubleshooting guidelines.

OperationsRAIDlogback

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Root Cause Analysis of Intermittent Timeout Issues in the Sirius Service Caused by RAID Card Consistency Checks

Qunar Tech Salon

Sep 28, 2023 · Operations

Automated Root Cause Analysis for Flight Ticket Transaction Interception at Qunar: Design, Algorithm, and Performance Optimizations

This article describes how Qunar implemented an automated root‑cause analysis system for flight‑ticket transaction interception, detailing the problem background, system research, a custom algorithm focusing on explanatory power, performance optimizations that reduced analysis time from five minutes to under ten seconds, and the resulting operational improvements.

Operationsalgorithmroot-cause analysis

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Automated Root Cause Analysis for Flight Ticket Transaction Interception at Qunar: Design, Algorithm, and Performance Optimizations