Copy-on-write dicipline pattern

Copy-on-write, also known as CoW, is a fundamental concept in computer science that has proven to be a valuable technique in optimizing performance and reducing memory usage in various applications. It involves creating a copy of shared data only when it needs to be modified, rather than duplicating it upfront. This article will explore the basics of the copy-on-write discipline, its benefits, and how it is utilized in various areas of computer systems, from operating systems to virtual memory management. This article will provide a comprehensive overview of the copy-on-write discipline and its impact on modern computing and could be of great interest for programmers, system administrators, or simply someone interested in computer science.

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Definition

Copy-on-write is a strategy used in computer programming to efficiently implement a “duplicate” or “copy” operation on elements that are initially shared. The basic idea is that multiple references to the same data are kept and the actual copying of data…