| .. | ||
| cicd | ||
| contributing | ||
| documentation | ||
| event_tracking | ||
| experiment_guide | ||
| fe_guide | ||
| feature_flags | ||
| geo | ||
| go_guide | ||
| i18n | ||
| img | ||
| integrations | ||
| new_fe_guide | ||
| python_guide | ||
| shell_scripting_guide | ||
| testing_guide | ||
| ux_guide | ||
| adding_database_indexes.md | ||
| api_graphql_styleguide.md | ||
| api_styleguide.md | ||
| application_limits.md | ||
| architecture.md | ||
| auto_devops.md | ||
| background_migrations.md | ||
| build_test_package.md | ||
| changelog.md | ||
| chaos_endpoints.md | ||
| chatops_on_gitlabcom.md | ||
| code_comments.md | ||
| code_review.md | ||
| creating_enums.md | ||
| cycle_analytics.md | ||
| dangerbot.md | ||
| database_debugging.md | ||
| database_query_comments.md | ||
| database_review.md | ||
| db_dump.md | ||
| deleting_migrations.md | ||
| diffs.md | ||
| distributed_tracing.md | ||
| doc_styleguide.md | ||
| ee_features.md | ||
| elasticsearch.md | ||
| emails.md | ||
| feature_flags.md | ||
| file_storage.md | ||
| filtering_by_label.md | ||
| foreign_keys.md | ||
| frontend.md | ||
| gemfile.md | ||
| geo.md | ||
| git_object_deduplication.md | ||
| gitaly.md | ||
| github_importer.md | ||
| gitlab_diagram_overview.odg | ||
| gotchas.md | ||
| hash_indexes.md | ||
| i18n_guide.md | ||
| import_export.md | ||
| import_project.md | ||
| instrumentation.md | ||
| interacting_components.md | ||
| internal_api.md | ||
| issuable-like-models.md | ||
| issue_types.md | ||
| iterating_tables_in_batches.md | ||
| kubernetes.md | ||
| lfs.md | ||
| licensed_feature_availability.md | ||
| licensing.md | ||
| logging.md | ||
| mass_insert.md | ||
| merge_request_performance_guidelines.md | ||
| migration_style_guide.md | ||
| module_with_instance_variables.md | ||
| namespaces_storage_statistics.md | ||
| newlines_styleguide.md | ||
| omnibus.md | ||
| ordering_table_columns.md | ||
| packages.md | ||
| performance.md | ||
| permissions.md | ||
| pipelines.md | ||
| policies.md | ||
| polling.md | ||
| polymorphic_associations.md | ||
| post_deployment_migrations.md | ||
| profiling.md | ||
| projections.md | ||
| prometheus_metrics.md | ||
| pry_debugging.md | ||
| query_count_limits.md | ||
| query_recorder.md | ||
| rake_tasks.md | ||
| reactive_caching.md | ||
| README.md | ||
| redis.md | ||
| renaming_features.md | ||
| repository_mirroring.md | ||
| reusing_abstractions.md | ||
| rolling_out_changes_using_feature_flags.md | ||
| routing.md | ||
| scalability.md | ||
| serializing_data.md | ||
| session.md | ||
| sha1_as_binary.md | ||
| shared_files.md | ||
| shell_commands.md | ||
| sidekiq_debugging.md | ||
| sidekiq_style_guide.md | ||
| single_table_inheritance.md | ||
| sql.md | ||
| swapping_tables.md | ||
| testing.md | ||
| ui_guide.md | ||
| understanding_explain_plans.md | ||
| uploads.md | ||
| utilities.md | ||
| value_stream_analytics.md | ||
| verifying_database_capabilities.md | ||
| what_requires_downtime.md | ||
| writing_documentation.md | ||
| comments | description |
|---|---|
| false | Learn how to contribute to GitLab. |
Contributor and Development Docs
Get started
- Set up GitLab's development environment with GitLab Development Kit (GDK)
- GitLab contributing guide
- Issues workflow (issue tracker guidelines, triaging, labels, feature proposals, issue weight, regression issues, technical and UX debt)
- Merge requests workflow (merge request guidelines, contribution acceptance criteria, definition of done, dependencies)
- Style guides
- Implement design & UI elements
- GitLab Architecture Overview
- Rake tasks for development
Processes
Must-reads:
- Code review guidelines for reviewing code and having code reviewed
- Database review guidelines for reviewing database-related changes and complex SQL queries, and having them reviewed
- Pipelines for the GitLab project
Complementary reads:
- GitLab core team & GitLab Inc. contribution process
- Security process for developers
- Guidelines for implementing Enterprise Edition features
- Danger bot
- Generate a changelog entry with
bin/changelog - Requesting access to Chatops on GitLab.com (for GitLabbers)
UX and Frontend guides
- GitLab Design System for building GitLab with existing CSS styles and elements
- Frontend guidelines
- Emoji guide
Backend guides
- GitLab utilities
- Issuable-like Rails models
- Logging
- API styleguide Use this styleguide if you are contributing to the API
- GraphQL API styleguide Use this styleguide if you are contributing 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
- Test Import Project
- 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
- Routing
- Repository mirroring
- Git LFS
- Developing against interacting components or features
- File uploads
- Auto DevOps development guide
- Mass Inserting Models
- Value Stream Analytics development guide
- Issue types vs first-class types
- Application limits
- Redis guidelines
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 - pgFormatter a PostgreSQL SQL syntax beautifier
Migrations
- What requires downtime?
- SQL guidelines for working with SQL queries
- Migrations style guide for creating safe SQL migrations
- Testing Rails migrations guide
- Post deployment migrations
- Background migrations
- Swapping tables
- Deleting migrations
Debugging
- Tracing the source of an SQL query using query comments with Marginalia
- Tracing the source of an SQL query in Rails console using Verbose Query Logs
Best practices
- 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
- Code comments
- Creating enums
- Renaming features
Case studies
Integration guides
Testing guides
Documentation guides
Internationalization (i18n) guides
Event tracking guides
Experiment Guide
Build guides
Compliance
- Licensing for ensuring license compliance