Modular Kernel
A modular kernel is an operating system kernel design where core functionality is separated into discrete, independent modules that can be loaded and unloaded dynamically at runtime. This architecture allows for greater flexibility, easier maintenance, and reduced memory footprint compared to monolithic kernels. It enables features like device drivers and file systems to be added or removed without rebooting the system.
Developers should learn about modular kernels when working on operating system development, embedded systems, or performance-critical applications where dynamic resource management is essential. It's particularly useful for creating customizable systems (like Linux with loadable kernel modules) and for reducing attack surfaces in security-sensitive environments by loading only necessary components.