Added documentation on adding database indexes ## What does this MR do? This MR adds a guide on when to add database indexes, how to approach this problem, etc ## Are there points in the code the reviewer needs to double check? Spelling, grammar, etc ## Why was this MR needed? Blindly adding indexes can be harmful to the database, and I recently had to remove 48-something unused indexes. ## What are the relevant issue numbers? #20767 ## Does this MR meet the acceptance criteria? - [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md) - Tests - [x] All builds are passing - [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides) - [x] Branch has no merge conflicts with `master` (if you do - rebase it please) - [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits) See merge request !5771
Add reference to product map. ## What does this MR do? Mention the product map in the UI Guide and remove a line that says that the GitLab logo and user picture and in the sidebar. ## What are the relevant issue numbers? 19350 - [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added - [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md) - [ ] API support added - Tests - [ ] Added for this feature/bug - [ ] All builds are passing - [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides) - [ ] Branch has no merge conflicts with `master` (if you do - rebase it please) - [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits) Closes #19350 See merge request !5769
This fixes two broken links in the performance guide and removes the mention of Josh as he no longer works for GitLab. [ci skip]
Remove line that says the GitLab logo and user picture are in the sidebar.
Mention add_column_with_default in downtime guide ## What does this MR do? This extends the "What causes downtime" guide with a mention of the `add_column_with_default` migration helper. ## Are there points in the code the reviewer needs to double check? Spelling, grammar, etc. ## Why was this MR needed? Currently the guide may lead one to believe it's not possible at all to add a column with a default value. ## Does this MR meet the acceptance criteria? - [x] ~~[CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added~~ - [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md) - Tests - [ ] All builds are passing - [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides) - [ ] Branch has no merge conflicts with `master` (if you do - rebase it please) - [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits) See merge request !5719
Update UI Guide with SVG guidelines This addition to the guide is to provide some guidelines to UX designers when exporting SVGs. Please let me know if anything is unclear or if you any improvements so we can document it clearly for everyone. cc / @hazelyang @cperessini @dimitrieh @connorshea @annabeldunstone @dzaporozhets ## What are the relevant issue numbers? https://gitlab.com/gitlab-org/gitlab-ee/issues/872 See merge request !5748
- Fix wrong doc_styleguide URL - Clarify migrations refer to SQL - Capitalize CSS
[ci skip]
Link to doc root, not readme of GDK I hope this makes navigation between gitlab-ce developer docs and GDK docs more smooth. See merge request !5716