sendfile
Sendfile is a system call and API used by operating systems to transfer data from a file descriptor that refers to a regular file to a network socket without copying data into user space. The primary goal is to reduce CPU usage and memory bandwidth by performing zero-copy data transfer in the kernel.
Origins and availability: The concept originated in Unix-like systems, and today Linux provides a sendfile interface
Operation and usage: On Linux, the call is typically invoked as sendfile(outfd, in_fd, offset, count). If offset
Limitations and considerations: The benefits vary with file type, network stack configuration, and kernel implementation. Not
Impact and usage notes: Sendfile is commonly used by web servers and file servers to serve static