This podcast explains the significance of version control systems in software development and compares them to Google Docs. It discusses the efficiency of version control systems and the importance of open source options. It explores the history and progression of version control systems, with a focus on Git. The podcast also highlights the role of GitHub as a central hub for software collaboration and the impact it has had on the job market.
Version control systems enable software developers to work together on large projects by tracking changes and allowing for seamless merging.
There are two main models of version control systems: client-server and distributed, with distributed systems offering more flexibility and efficiency.
Deep dives
What is a version control system?
A version control system is a tool used by software developers to track changes in source code over time. It allows multiple developers to work on different parts of a program and seamlessly merge their changes. Version control systems enable the viewing and undoing of changes, as well as conflict management. They are similar to Google Docs, which track changes in documents, but version control systems are more general-purpose and can handle various types of text files, including source code.
Two models of version control systems
There are two main models of version control systems: client-server and distributed. In the client-server model, there is a central repository that holds the canonical version of the project. Developers submit their changes to the central server, which handles conflict resolution. However, contributors need to regularly sync with the server to stay updated. Distributed version control systems, on the other hand, give each contributor their own full copy of the repository, including the entire history of changes. They can make changes locally and later merge them with others' changes. These systems are more efficient and offer greater flexibility.
Efficiency and popular version control systems
Modern version control systems store changes efficiently by storing only the deltas or changes between versions, rather than making copies of entire files. Some early version control systems involved making separate folders for different versions of projects. Open-source version control systems like SCCS, RCS, CVS, and Subversion gained popularity in the late 80s and early 90s. However, today's industry standard is Git, a distributed version control system developed by Linus Torvalds in the early 2000s. Git is widely used and forms the foundation for platforms like GitHub, which serves as a central hub for hosting Git repositories and enables collaboration among developers.
Version Control Systems make it possible for software developers to seamlessly work together on large projects. In this episode we explain how version control systems are used and how the different kinds of version control systems compare to one another. We pay special attention to the most popular version control system, Git, and the very popular open source "social network" GitHub.