<p>➀ The need for RDMA in high-performance computing, big data storage, and machine learning domains;</p><p>➁ Detailed introduction of RDMA network architecture, key components, and protocols;</p><p>➂ Explanation of the RDMA working mechanism, including software configuration and hardware design;</p><p>➃ Overview of RDMA technology protocols such as InfiniBand, iWARP, and RoCE;</p><p>➄ Future technological innovations and challenges for RDMA, including scalable RDMA controllers, efficient QP management, congestion control, network topology optimization, and security.</p>