Merge branch 'home-panel-tag-caching' into 'master'

Cache parts of the home_panel partial [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!57031

app/views/projects/_home_panel.html.haml

@@ -2,6 +2,7 @@
 - show_auto_devops_callout = show_auto_devops_callout?(@project)
 - max_project_topic_length = 15
 - emails_disabled = @project.emails_disabled?
+- cache_enabled = Feature.enabled?(:cache_home_panel, type: :development, default_enabled: :yaml)
 
 .project-home-panel.js-show-on-project-root.gl-my-5{ class: [("empty-project" if empty_repo)] }
   .gl-display-flex.gl-justify-content-space-between.gl-flex-wrap.gl-sm-flex-direction-column.gl-mb-3
@@ -23,7 +24,9 @@
           - if current_user
             %span.access-request-links.gl-ml-3
               = render 'shared/members/access_request_links', source: @project
+
           - if @project.tag_list.present?
+            = cache_if(cache_enabled, [@project, :tag_list], expires_in: 1.day) do
               %span.home-panel-topic-list.mt-2.w-100.d-inline-flex.gl-font-base.gl-font-weight-normal.gl-align-items-center
                 = sprite_icon('tag', css_class: 'icon gl-relative gl-mr-2')
 
@@ -41,7 +44,7 @@
                   .text-nowrap.has-tooltip{ data: { container: 'body' }, title: @project.has_extra_topics? ? @project.topics_not_shown.join(', ') : nil }
                     = _("+ %{count} more") % { count: @project.count_of_extra_topics_not_shown }
 
-
+    = cache_if(cache_enabled, [@project, :buttons, current_user, @notification_setting], expires_in: 1.day) do
       .project-repo-buttons.gl-display-flex.gl-justify-content-md-end.gl-align-items-start.gl-flex-wrap.gl-mt-5
         - if current_user
           .gl-display-flex.gl-align-items-start.gl-mr-3
@@ -53,6 +56,7 @@
           = render 'projects/buttons/fork'
 
   - if can?(current_user, :download_code, @project)
+    = cache_if(cache_enabled, [@project, :download_code], expires_in: 1.minute) do
       %nav.project-stats
         .nav-links.quick-links
           - if @project.empty_repo?
@@ -80,6 +84,7 @@
     = render_if_exists "projects/home_mirror"
 
   - if @project.badges.present?
+    = cache_if(cache_enabled, [@project, :badges], expires_in: 1.day) do
       .project-badges.mb-2
         - @project.badges.each do |badge|
           %a.gl-mr-3{ href: badge.rendered_link_url(@project),

changelogs/unreleased/home-panel-tag-caching.yml

+---
+title: Cache project tag list
+merge_request: 57031
+author:
+type: performance

config/feature_flags/development/cache_home_panel.yml

+---
+name: cache_home_panel
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/57031
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/328421
+milestone: '13.12'
+type: development
+group: group::source code
+default_enabled: false