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| comments | description |
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| false | Learn how to contribute to GitLab. |
GitLab development guides
Get started!
- Set up GitLab's development environment with GitLab Development Kit (GDK)
- GitLab contributing guide
- Architecture of GitLab
- Rake tasks for development
Processes
- GitLab core team & GitLab Inc. contribution process
- Generate a changelog entry with
bin/changelog - Code review guidelines for reviewing code and having code reviewed.
- Automatic CE->EE merge
- Guidelines for implementing Enterprise Edition features
- Security process for developers
UX and frontend guides
- GitLab Design System for building GitLab with existing CSS styles and elements
- Frontend guidelines
- Emoji guide
Backend guides
- GitLab utilities
- Logging
- API styleguide Use this styleguide if you are contributing to the API.
- GraphQL API styleguide Use this styleguide if you are contribution to the GraphQL API
- Sidekiq guidelines for working with Sidekiq workers
- Working with Gitaly
- Manage feature flags
- Licensed feature availability
- View sent emails or preview mailers
- Shell commands in the GitLab codebase
Gemfileguidelines- Pry debugging
- Sidekiq debugging
- Accessing session data
- Gotchas to avoid
- Avoid modules with instance variables if possible
- How to dump production data to staging
- Working with the GitHub importer
- Import/Export development documentation
- Elasticsearch integration docs
- Working with Merge Request diffs
- Kubernetes integration guidelines
- Permissions
- Prometheus metrics
- Guidelines for reusing abstractions
- DeclarativePolicy framework
- How Git object deduplication works in GitLab
- Geo development
Performance guides
- Instrumentation for Ruby code running in production environments
- Performance guidelines for writing code, benchmarks, and certain patterns to avoid
- Merge request performance guidelines for ensuring merge requests do not negatively impact GitLab performance
- Profiling a URL, measuring performance using Sherlock, or tracking down N+1 queries using Bullet
Database guides
Tooling
- Understanding EXPLAIN plans
- explain.depesz.com for visualising the output
of
EXPLAIN
Migrations
- What requires downtime?
- SQL guidelines for working with SQL queries
- Migrations style guide for creating safe SQL migrations
- Post deployment migrations
- Background migrations
- Swapping tables
Best practices
- Merge Request checklist
- Adding database indexes
- Foreign keys & associations
- Single table inheritance
- Polymorphic associations
- Serializing data
- Hash indexes
- Storing SHA1 hashes as binary
- Iterating tables in batches
- Ordering table columns
- Verifying database capabilities
- Database Debugging and Troubleshooting
- Query Count Limits
- Database helper modules
Integration guides
Testing guides
Documentation guides
Internationalization (i18n) guides
Build guides
Compliance
- Licensing for ensuring license compliance