Understanding Memgraph Through Dependency Graphs

Memgraph, a complex C++ system, utilizes three distinct graph views—CMake, Ninja, and Conan—to analyze its architecture, build execution, and third-party dependencies, thereby providing insights into its structural and functional dynamics. These graphs are generated using Graphviz DOT format, converted to Cypher, and imported into Memgraph for comprehensive analysis using algorithms like PageRank and betweenness centrality. The CMake graph offers insights into target-level architecture and coupling, the Ninja graph focuses on build-step dependencies and optimization points for reducing rebuild fanout, and the Conan graph highlights package-level relationships and risks associated with third-party dependencies. This multi-layered graphical approach aids in identifying chokepoints, optimizing build processes, and managing dependency risks, ultimately facilitating safer code refactoring and more efficient builds. By treating central targets with care and focusing on optimizing high-impact nodes, engineering teams can reduce potential ripple effects and improve the maintainability of the system.

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