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GIT Architecture

Git architecture and workflow

Multiple contributors can work on the same project at once thanks to the distributed version control system known as Git. Each developer in Git has a local repository that contains an exact replica of the project’s history. Local commits are followed by pushes to a central repository, which is typically housed on a platform such as GitHub or GitLab. As merging and conflict resolution are fundamental components of the Git workflow, this enables collaboration without causing constant overwriting of one another’s work.

Let’s examine a few of the fundamental Git commands you’ll frequently use:

• Clone: You can copy an existing repository to your local machine using the [Repository_url] git clone command.
• Commit: When you commit, your changes are saved to the local repository. Git add [file_names] is used to stage changes prior to committing, and git commit -m Commit message is used to commit the staged changes.
• Push: This sends your committed changes to your remote repository. GitHub push origin [branch_name].
• Pull: This updates your local repository by downloading updates from a remote repository to your computer. [Branch_name] git pull origin.

After laying a solid foundation in the fundamentals of Git, let’s move on to the next subject: exploring branches, merges, and best practices for efficiently managing challenging data engineering projects.

Let’s look at an instance where you’re tasked with adding a new data validation feature to an already existing ETL pipeline as a data engineer. If your team uses the Git workflow, you will branch off the develop branch and work on your changes in a new branch called feature. When your feature branch is finished, you will start a pull request to merge it back into the develop branch. Eventually, this will be merged into the main branch as part of a planned release.

Consider a different scenario in which you and another engineer are tasked with improving various components of an algorithm for processing data. You both make adjustments to different branches. Git flags a conflict when merging these branches because both of you changed the same method. To fix this, you would manually select which changes to keep in the conflicting file, possibly integrating both sets of optimizations, before successfully completing the merge.

Git collaboration involves more than just pushing your changes; it also involves staying in sync with other people. You can keep your local repository updated with the most recent changes from your team by using the git pull and git fetch commands. git fetch gives you an additional level of control by allowing you to review the changes before merging, in contrast to git pull, which will fetch the changes and immediately merge them into your current branch.

Imagine you are a member of a distributed team in charge of a sizable data pipeline. A global teammate of yours has made some improvements and pushed them to the remote repository. Before merging these changes into your local branch for additional testing, you can use git fetch to verify them.

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