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+# Registered I/O  
+
+**Registered I/O** is an optimization technique that enhances the performance of asynchronous 
+I/O operations by pre-registering resources such as file descriptors, memory buffers, or 
+network sockets with the operating system. This reduces the overhead of repeated system calls 
+and resource management, making it highly beneficial for server-side game development, where 
+low-latency and high-throughput are critical. Technologies like `io_uring` and Windows
+`RIO (Registered I/O)` API leverage this approach to minimize kernel interactions, improving 
+efficiency for handling large-scale multiplayer game servers. By reducing context switching 
+and memory allocation overhead, Registered I/O helps game servers achieve smoother performance 
+and lower latency.  
+
+Visit the following resources to learn more:
+
+- [@official@Microsoft Registered I/O (RIO)](https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/hh997032(v=ws.11))