After finishing my work on a feature branch. Should I merge the main branch into the feature branch and then merge the feature branch back into the main branch, or should I rebase instead?
Whether to merge or rebase a feature branch before merging it into the main branch is a matter of personal preference and team workflow. Both methods achieve the same result, which is to integrate changes made in the feature branch into the main branch.

Here are some considerations to help you decide which approach to take:

Merging:
- Creates a new merge commit that incorporates the changes from the feature branch into the main branch
- Preserves the commit history of both branches
- Can be useful for tracking the development history of a feature and keeping a clear audit trail of when changes were made

Rebasing:
- Rewrites the commit history of the feature branch by replaying all the changes on top of the main branch
- Creates a linear commit history that is easier to read and follow
- Can help to keep the main branch clean by avoiding unnecessary merge commits

In general, if you are working on a long-lived feature branch with many commits and want to keep a clear development history, merging may be a better option. If you are working on a short-lived feature branch with few commits and want to keep a clean and simple commit history, rebasing may be a better option.

Here are some examples of how to merge and rebase a feature branch in Git using the command line:

Merge:
1. Checkout the main branch: git checkout main
2. Merge the feature branch into the main branch: git merge feature-branch
3. Resolve any merge conflicts that may arise
4. Push the changes to the remote main branch: git push origin main

Rebase:
1. Checkout the feature branch: git checkout feature-branch
2. Rebase the feature branch onto the main branch: git rebase main
3. Resolve any merge conflicts that may arise
4. Checkout the main branch: git checkout main
5. Merge the feature branch into the main branch: git merge feature-branch
6. Push the changes to the remote main branch: git push origin main
Ok but how do I define if my branch is longlived one or branch tahat is short lived? When few commits becomes too much and branch gets labeled as longlived? How can I determine which pereference me team have? I don't wan't to be seem as dumb.