In a software application development, code is stored in code repositories like git,bitbucket, Every feature in application is committed with change log and version number.
During application release process, application version is increased
For example, windows is released to the end users with versions 10,11 with each versions contains features.
What is changelog?
Changelog is a text file with log summary of all your change made for each version of project. It is also called
The project is either software or application or opensource products.
It contains date and version number and contains log of changes, can be grouped by module or feature. There is no standard format for this files but you can follow certain rules
How do you write a changelog?
There are different changes that you can add to changelog for each release.
Added: This section contains new features released.
Changed: It contains changes made to existing feature.
Deprecated: changes removed in future.
Removed: removed features.
Fixed: any bugs fixed.
Security: security issues are declared here
Changelog principles and features
- Used by Users and contributers and not for machine
- It contains Release date
- summary logs are grouped by feature
- Version number displayed and latest version shows first
- This files can be created as
git Changelog generator
There are lot of generator to generate changelog
Changelog format example file
Changelog file can be created with
markdown editor in
github extension is .md
Usually semantic version is followed for software release process,Highest version comes first.
Here is format and summary of changelog
All summary of changes are written here Highest version comes first [2.0.0] - 2021-10-02 Here we write upgrading notes for brands. It's a team effort to make them as straightforward as possible. Changelog for 2.0.0 version with summary of log changes Added PROJECT-XXXX MINOR story details goes here. PROJECT-YYYY PATCH story details goes here. Changed Fixed [1.2.4] - 2020-03-12 Changelog for 1.2.4 version Added Changed PROJECT-ZZZZ MAJOR Angular version change. Fixed PROJECT-AAA PATCH Add styles for mat-table. [1.2.3] - 2019-02-11 Added Changed Fixed PROJECT-123 MINOR Fix core module tests PROJECT-5454 MAJOR Module cdk version upgrade
How do you define guidelines for changelog in Git
You can check git log command to get history of revisions and changes
Git log with more detailed information
git log --stat --pretty=short --graph
Here are some of the frequent command to get
How do you get all commits changes up to specific tag?
git log --oneline --decorate v1.0.0
This shows commits logs for upto v1.0.0
We can use shortlog which groupes the commits by author and generate summary of changes
git shortlog v1.0.0
How do you get changelog between two releases?
The below command show commit change log between two releases v1.0.0 and v2.0.0
git log v1.0.0...v2.0.0
How to generate changelogin in Jenkins?
Jenkins provides changelog plugin to create summary of notes between two revisions.
You can check more about git changelog plugin
This plugin can be used with
- pipeline plugin
- post-build action
Difference between Changelog vs release notes
Both are technically same but different in descriptions
Release notes is a notes documents about the changes of each release of an software or project. This contains addtional information about the changes and these changes has any impact to end users. This is more useful for end customers
Change logs are note of changes which contains additons,delettion and changes to released product version. THis is more useful for developers and contributors.