Shared Library
A shared library is a collection of precompiled code, functions, or resources that multiple programs can use simultaneously at runtime, reducing redundancy and improving efficiency. It is loaded into memory once and shared across applications, enabling modular software development and easier updates. Common examples include dynamic link libraries (DLLs) on Windows and shared objects (SOs) on Unix-like systems.
Developers should use shared libraries to promote code reuse, reduce application size, and simplify maintenance by centralizing common functionality. They are essential in scenarios like building modular applications, distributing software with dependencies, and enabling hot updates without recompiling entire programs. This is particularly valuable in large-scale systems, embedded environments, and cross-platform development.