RDMA
RDMA (Remote Direct Memory Access) is a networking technology that enables direct memory access between computers over a network, bypassing the operating system and CPU to reduce latency and CPU overhead. It allows one computer to read from or write to the memory of another computer without involving the remote CPU, making it highly efficient for high-performance computing and data-intensive applications. This is commonly implemented using specialized hardware like InfiniBand or Ethernet adapters with RDMA support.
Developers should learn and use RDMA when building applications that require ultra-low latency and high-throughput communication, such as in high-performance computing (HPC), financial trading systems, big data analytics, and cloud storage solutions. It is particularly valuable in scenarios where traditional TCP/IP networking introduces too much overhead, such as in distributed databases, machine learning clusters, and scientific simulations, to improve performance and scalability.