A Low-Overhead Inter-Process Communication Library with Minimal Dependencies for Efficient Microservice Communication

In the modern microservice environment, library dependencies for inter-system communication have become bloated, and conflicts and complications during build and operation have become problems. In particular, in the conventional communication architecture that depends on the MySQL database, the multi-layer dependencies included in \texttt{libmysqlclient} restrict the flexibility of system design. In this study, a replication-protocol-compatible patch was applied to the lightweight MySQL client library Trilogy, and a loosely coupled, low-footprint IPC library connecting the control plane and the data plane was implemented. The proposed method eliminates dependencies on the internal static library group of MySQL Server, while enabling binary log events to be processed directly at the application layer. Stable operation has been achieved for more than one year in a commercial system environment, and its effectiveness has been verified through long-term operation.