Worked on the rems-project/cn repository to refactor the memory allocation system within the hash table module. The approach involved abstracting the allocator struct and introducing explicit allocator APIs, which standardized memory management practices across different modules. By leveraging C programming and applying principles of software architecture, the changes established a more flexible and maintainable allocator pattern. This refactor not only improved the consistency of allocation patterns in critical data structures but also laid the groundwork for future enhancements and safer rollout of allocator strategies. The work focused on enhancing maintainability and reliability through careful attention to memory management and modular design.