Who ate all those messages?

·2025.08.08 16:52

Key point

This covers the process of analyzing and resolving a concurrency issue caused by the ShardingSphere library in KakaoBank's notification tab system.

Details

After analyzing the cause of abnormal behavior occurring in KakaoBank's notification tab system, a Concurrency issue caused by the ShardingSphere library was identified.

Through the process of reproducing the issue and identifying its cause, this covers in detail how the library affected system stability. In particular, it emphasizes the importance of managing core libraries, and explains the process of introducing a new management system to prevent this from happening again.

It contains practical troubleshooting experience that backend developers may face, along with concrete countermeasures for securing system stability.

concurrency troubleshooting backend kakaobank sharding-sphere database-sharding

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