Kakao Unveils Stability Strategy Focused on User Experience

Based on 14 years of service operation experience, Kakao unveiled a strategy that measures stability from the user's perspective rather than through technical metrics. The KakaoTalk chat server operates in a complex environment where new source code is deployed more than 11 times on average per day, leading the company to conclude that complete prevention of failures is impossible.

Managing the Three Elements of Resilience

Kakao redefined the severity of failures based on user perception and established three core metrics to manage them: failure frequency, failure impact scope, and Mean Time To Recovery (MTTR). Each element is managed through specific countermeasures, such as improving the deployment process, lightweighting essential logic, and implementing rapid rollback strategies.

Strengthening Stability Across All Segments

To enhance service stability, Kakao analyzes vulnerabilities by dividing the system into three segments: client, service, and infrastructure. For the client segment, quality control and monitoring systems are strengthened. For the service segment, cloud multi-regionization is used to prevent data loss. For the infrastructure segment, facilities are being expanded through long-term roadmaps, including the operation of the Kakao Data Center Ansan.

Additionally, Kakao has established a BCM (Business Continuity Management) system across all segments and conducts 24-hour security monitoring to ensure services remain uninterrupted during disasters or cyberattacks.