diff --git a/app/assets/javascripts/reports/components/report_section.vue b/app/assets/javascripts/reports/components/report_section.vue
index bb86695b9a3..468c8916b8d 100644
--- a/app/assets/javascripts/reports/components/report_section.vue
+++ b/app/assets/javascripts/reports/components/report_section.vue
@@ -168,11 +168,6 @@ export default {
   },
   methods: {
     toggleCollapsed() {
-      // Because the top-level div is always clickable, we need to check if we can collapse.
-      if (!this.isCollapsible) {
-        return;
-      }
-
       if (this.trackAction) {
         api.trackRedisHllUserEvent(this.trackAction);
       }
@@ -187,7 +182,7 @@ export default {
 </script>
 <template>
   <section class="media-section">
-    <div class="media" :class="{ 'gl-cursor-pointer': isCollapsible }" @click="toggleCollapsed">
+    <div class="media">
       <status-icon :status="statusIconName" :size="24" class="align-self-center" />
       <div class="media-body gl-display-flex gl-align-items-flex-start gl-flex-direction-row!">
         <div
@@ -218,7 +213,7 @@ export default {
             category="tertiary"
             size="small"
             :icon="isExpanded ? 'chevron-lg-up' : 'chevron-lg-down'"
-            @click.stop="toggleCollapsed"
+            @click="toggleCollapsed"
           />
         </div>
       </div>
diff --git a/app/services/protected_branches/cache_service.rb b/app/services/protected_branches/cache_service.rb
index 8c521f4ebcb..a664ff0542f 100644
--- a/app/services/protected_branches/cache_service.rb
+++ b/app/services/protected_branches/cache_service.rb
@@ -7,20 +7,26 @@ module ProtectedBranches
     CACHE_EXPIRE_IN = 1.day
     CACHE_LIMIT = 1000
 
-    def fetch(ref_name, dry_run: false)
+    def fetch(ref_name, dry_run: false, &block)
       record = OpenSSL::Digest::SHA256.hexdigest(ref_name)
 
       Gitlab::Redis::Cache.with do |redis|
         cached_result = redis.hget(redis_key, record)
 
-        decoded_result = Gitlab::Redis::Boolean.decode(cached_result) unless cached_result.nil?
+        if cached_result.nil?
+          metrics.increment_cache_miss
+        else
+          metrics.increment_cache_hit
+
+          decoded_result = Gitlab::Redis::Boolean.decode(cached_result)
+        end
 
         # If we're dry-running, don't break because we need to check against
         # the real value to ensure the cache is working properly.
         # If the result is nil we'll need to run the block, so don't break yet.
         break decoded_result unless dry_run || decoded_result.nil?
 
-        calculated_value = yield
+        calculated_value = metrics.observe_cache_generation(&block)
 
         check_and_log_discrepancy(decoded_result, calculated_value, ref_name) if dry_run
 
@@ -64,5 +70,14 @@ module ProtectedBranches
     def redis_key
       @redis_key ||= [CACHE_ROOT_KEY, @project.id].join(':')
     end
+
+    def metrics
+      @metrics ||= Gitlab::Cache::Metrics.new(
+        caller_id: Gitlab::ApplicationContext.current_context_attribute(:caller_id),
+        cache_identifier: "#{self.class}#fetch",
+        feature_category: :source_code_management,
+        backing_resource: :cpu
+      )
+    end
   end
 end
diff --git a/doc/administration/monitoring/prometheus/gitlab_metrics.md b/doc/administration/monitoring/prometheus/gitlab_metrics.md
index e8bdacb0e14..69277becc84 100644
--- a/doc/administration/monitoring/prometheus/gitlab_metrics.md
+++ b/doc/administration/monitoring/prometheus/gitlab_metrics.md
@@ -148,6 +148,8 @@ The following metrics are available:
 | `gitlab_ci_build_trace_errors_total`                             | Counter     | 14.4    | Total amount of different error types on a build trace                                                                | `error_reason`                                            |
 | `gitlab_presentable_object_cacheless_render_real_duration_seconds`              | Histogram   | 15.3     | Duration of real time spent caching and representing specific web request objects                                                    | `controller`, `action`                                    |
 | `cached_object_operations_total`                                      | Counter     | 15.3    | Total number of objects cached for specific web requests                                                                                                      | `controller`, `action`                                    |
+| `redis_hit_miss_operations_total`                                | Counter     | 15.6    | Total number of Redis cache hits and misses                                                                           | `cache_hit`, `caller_id`, `cache_identifier`, `feature_category`, `backing_resource` |
+| `redis_cache_generation_duration_seconds`                        | Histogram   | 15.6    | Time to generate Redis cache                                                                                          | `cache_hit`, `caller_id`, `cache_identifier`, `feature_category`, `backing_resource` |
 
 ## Metrics controlled by a feature flag
 
diff --git a/doc/api/product_analytics.md b/doc/api/product_analytics.md
index 4653a52732a..e10327bc59b 100644
--- a/doc/api/product_analytics.md
+++ b/doc/api/product_analytics.md
@@ -4,7 +4,7 @@ group: Product Analytics
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
 ---
 
-# Product analytics API
+# Product analytics API **(ULTIMATE)**
 
 > Introduced in GitLab 15.4 [with a flag](../administration/feature_flags.md) named `cube_api_proxy`. Disabled by default.
 
diff --git a/doc/user/group/epics/manage_epics.md b/doc/user/group/epics/manage_epics.md
index a9c2b91340f..d810724e130 100644
--- a/doc/user/group/epics/manage_epics.md
+++ b/doc/user/group/epics/manage_epics.md
@@ -257,7 +257,7 @@ To filter:
 1. On the top bar, select **Main menu > Groups** and find your group.
 1. On the left sidebar, select **Epics**.
 1. Select the field **Search or filter results**.
-1. From the dropdown menu, select the scope or enter plain text to search by epic title or description.
+1. From the dropdown list, select the scope or enter plain text to search by epic title or description.
 1. Press <kbd>Enter</kbd> on your keyboard. The list is filtered.
 
 ## Sort the list of epics
@@ -282,10 +282,10 @@ You can reverse the default order and interact with the activity feed sorted by
 at the top. Your preference is saved via local storage and automatically applied to every epic and issue
 you view.
 
-To change the activity sort order, select the **Oldest first** dropdown menu and select either oldest
+To change the activity sort order, select the **Oldest first** dropdown list and select either oldest
 or newest items to be shown first.
 
-![Issue activity sort order dropdown button](img/epic_activity_sort_order_v13_2.png)
+![Issue activity sort order dropdown list](img/epic_activity_sort_order_v13_2.png)
 
 ## Make an epic confidential
 
diff --git a/doc/user/group/iterations/index.md b/doc/user/group/iterations/index.md
index a6435ae2aa3..518370fc7ac 100644
--- a/doc/user/group/iterations/index.md
+++ b/doc/user/group/iterations/index.md
@@ -278,8 +278,8 @@ To group issues by label:
 
 1. On the top bar, select **Main menu > Groups** and find your group.
 1. On the left sidebar, select **Issues > Iterations**.
-1. In the **Group by** dropdown, select **Label**.
-1. Select the **Filter by label** dropdown.
-1. Select the labels you want to group by in the labels dropdown.
+1. In the **Group by** dropdown list, select **Label**.
+1. Select the **Filter by label** dropdown list.
+1. Select the labels you want to group by in the labels dropdown list.
    You can also search for labels by typing in the search input.
 1. Select any area outside the label dropdown list. The page is now grouped by the selected labels.
diff --git a/doc/user/group/planning_hierarchy/index.md b/doc/user/group/planning_hierarchy/index.md
index baa2a4d6046..f48a027ab2d 100644
--- a/doc/user/group/planning_hierarchy/index.md
+++ b/doc/user/group/planning_hierarchy/index.md
@@ -58,10 +58,10 @@ Epic "1"*-- "0..*" Issue
 
 In an issue, you can view the parented epic above the issue in the right sidebar under **Epic**.
 
-![epics state dropdown](img/issue-view-parent-epic-in-sidebar_v14_6.png)
+![epics state dropdown list](img/issue-view-parent-epic-in-sidebar_v14_6.png)
 
 ## View ancestry of an epic
 
 In an epic, you can view the ancestors as parents in the right sidebar under **Ancestors**.
 
-![epics state dropdown](img/epic-view-ancestors-in-sidebar_v14_6.png)
+![epics state dropdown list](img/epic-view-ancestors-in-sidebar_v14_6.png)
diff --git a/doc/user/group/repositories_analytics/index.md b/doc/user/group/repositories_analytics/index.md
index 0a4d7f5eae4..3ac26032294 100644
--- a/doc/user/group/repositories_analytics/index.md
+++ b/doc/user/group/repositories_analytics/index.md
@@ -58,7 +58,7 @@ To get the report:
 1. Select the projects and date range you want to include in the report.
 1. Select **Download test coverage data (.csv)**.
 
-The projects dropdown shows up to 100 projects from your group. If the project you want to check is not in the dropdown list, you can select **All projects** to download the report for all projects in your group, including any projects that are not listed. There is a plan to improve this behavior in this [related issue](https://gitlab.com/gitlab-org/gitlab/-/issues/250684).
+The projects dropdown list shows up to 100 projects from your group. If the project you want to check is not in the dropdown list, you can select **All projects** to download the report for all projects in your group, including any projects that are not listed. There is a plan to improve this behavior in this [related issue](https://gitlab.com/gitlab-org/gitlab/-/issues/250684).
 
 For each day that a coverage report was generated by a job in a project's pipeline, a row in the CSV includes:
 
diff --git a/doc/user/infrastructure/clusters/connect/new_civo_cluster.md b/doc/user/infrastructure/clusters/connect/new_civo_cluster.md
index 998548e3a5e..df785cce406 100644
--- a/doc/user/infrastructure/clusters/connect/new_civo_cluster.md
+++ b/doc/user/infrastructure/clusters/connect/new_civo_cluster.md
@@ -91,7 +91,7 @@ Refer to the [Civo Terraform provider](https://registry.terraform.io/providers/c
 After configuring your project, manually trigger the provisioning of your cluster. In GitLab:
 
 1. On the left sidebar, go to **CI/CD > Pipelines**.
-1. Next to **Play** (**{play}**), select the dropdown icon (**{chevron-lg-down}**).
+1. Next to **Play** (**{play}**), select the dropdown list icon (**{chevron-lg-down}**).
 1. Select **Deploy** to manually trigger the deployment job.
 
 When the pipeline finishes successfully, you can see your new cluster:
diff --git a/doc/user/infrastructure/clusters/connect/new_eks_cluster.md b/doc/user/infrastructure/clusters/connect/new_eks_cluster.md
index 164b426fd24..8a5c32150c9 100644
--- a/doc/user/infrastructure/clusters/connect/new_eks_cluster.md
+++ b/doc/user/infrastructure/clusters/connect/new_eks_cluster.md
@@ -92,7 +92,7 @@ View the [AWS Terraform provider](https://registry.terraform.io/providers/hashic
 After configuring your project, manually trigger the provisioning of your cluster. In GitLab:
 
 1. On the left sidebar, go to **CI/CD > Pipelines**.
-1. Next to **Play** (**{play}**), select the dropdown icon (**{chevron-lg-down}**).
+1. Next to **Play** (**{play}**), select the dropdown list icon (**{chevron-lg-down}**).
 1. Select **Deploy** to manually trigger the deployment job.
 
 When the pipeline finishes successfully, you can view the new cluster:
diff --git a/doc/user/infrastructure/clusters/connect/new_gke_cluster.md b/doc/user/infrastructure/clusters/connect/new_gke_cluster.md
index d04b14bf80f..80bd5a05c72 100644
--- a/doc/user/infrastructure/clusters/connect/new_gke_cluster.md
+++ b/doc/user/infrastructure/clusters/connect/new_gke_cluster.md
@@ -117,7 +117,7 @@ Refer to the [Google Terraform provider](https://registry.terraform.io/providers
 After configuring your project, manually trigger the provisioning of your cluster. In GitLab:
 
 1. On the left sidebar, go to **CI/CD > Pipelines**.
-1. Next to **Play** (**{play}**), select the dropdown icon (**{chevron-lg-down}**).
+1. Next to **Play** (**{play}**), select the dropdown list icon (**{chevron-lg-down}**).
 1. Select **Deploy** to manually trigger the deployment job.
 
 When the pipeline finishes successfully, you can see your new cluster:
diff --git a/doc/user/packages/container_registry/index.md b/doc/user/packages/container_registry/index.md
index 1ac38979950..c910c362fe0 100644
--- a/doc/user/packages/container_registry/index.md
+++ b/doc/user/packages/container_registry/index.md
@@ -523,7 +523,7 @@ for more details about the permissions that this setting grants to users.
 
 1. Go to your project's **Settings > General** page.
 1. Expand the section **Visibility, project features, permissions**.
-1. Under **Container Registry**, select an option from the dropdown:
+1. Under **Container Registry**, select an option from the dropdown list:
 
    - **Everyone With Access** (Default): The Container Registry is visible to everyone with access
    to the project. If the project is public, the Container Registry is also public. If the project
diff --git a/doc/user/profile/notifications.md b/doc/user/profile/notifications.md
index 7942ee38be9..3548537442c 100644
--- a/doc/user/profile/notifications.md
+++ b/doc/user/profile/notifications.md
@@ -109,7 +109,7 @@ To select a notification level for a group, use either of these methods:
 Or:
 
 1. On the top bar, select **Main menu > Groups** and find your group.
-1. Select the notification dropdown, next to the bell icon (**{notifications}**).
+1. Select the notification dropdown list, next to the bell icon (**{notifications}**).
 1. Select the desired [notification level](#notification-levels).
 
 #### Change email address used for group notifications
@@ -140,7 +140,7 @@ To select a notification level for a project, use either of these methods:
 Or:
 
 1. On the top bar, select **Main menu > Projects** and find your project.
-1. Select the notification dropdown, next to the bell icon (**{notifications}**).
+1. Select the notification dropdown list, next to the bell icon (**{notifications}**).
 1. Select the desired [notification level](#notification-levels).
 
 <i class="fa fa-youtube-play youtube" aria-hidden="true"></i>
diff --git a/doc/user/profile/preferences.md b/doc/user/profile/preferences.md
index 6849918886a..9c0d94e6447 100644
--- a/doc/user/profile/preferences.md
+++ b/doc/user/profile/preferences.md
@@ -137,7 +137,7 @@ You can include the following options for your default dashboard view:
 
 ### Group overview content
 
-The **Group overview content** dropdown allows you to choose what information is
+The **Group overview content** dropdown list allows you to choose what information is
 displayed on a group's home page.
 
 You can choose between 2 options:
diff --git a/doc/user/project/clusters/add_existing_cluster.md b/doc/user/project/clusters/add_existing_cluster.md
index 363197107f9..0b0555806ce 100644
--- a/doc/user/project/clusters/add_existing_cluster.md
+++ b/doc/user/project/clusters/add_existing_cluster.md
@@ -69,7 +69,7 @@ To add a Kubernetes cluster to your project, group, or instance:
    1. Project's **{cloud-gear}** **Infrastructure > Kubernetes clusters** page, for a project-level cluster.
    1. Group's **{cloud-gear}** **Kubernetes** page, for a group-level cluster.
    1. **Main menu > Admin > Kubernetes** page, for an instance-level cluster.
-1. On the **Kubernetes clusters** page, select the **Connect with a certificate** option from the **Actions** dropdown menu.
+1. On the **Kubernetes clusters** page, select the **Connect with a certificate** option from the **Actions** dropdown list.
 1. On the **Connect a cluster** page, fill in the details:
    1. **Kubernetes cluster name** (required) - The name you wish to give the cluster.
    1. **Environment scope** (required) - The
diff --git a/doc/user/project/integrations/hangouts_chat.md b/doc/user/project/integrations/hangouts_chat.md
index 1be0db223ac..c6e102b1d74 100644
--- a/doc/user/project/integrations/hangouts_chat.md
+++ b/doc/user/project/integrations/hangouts_chat.md
@@ -28,7 +28,7 @@ notifications to Google Chat:
 To enable the integration in Google Chat:
 
 1. Enter the room where you want to receive notifications from GitLab.
-1. Open the room dropdown menu on the top-left and select **Manage webhooks**.
+1. Open the room dropdown list on the top-left and select **Manage webhooks**.
 1. Enter the name for your webhook, for example "GitLab integration".
 1. Optional. Add an avatar for your bot.
 1. Select **Save**.
diff --git a/doc/user/project/integrations/slack.md b/doc/user/project/integrations/slack.md
index bc49784eff4..4911df54c19 100644
--- a/doc/user/project/integrations/slack.md
+++ b/doc/user/project/integrations/slack.md
@@ -45,7 +45,7 @@ to control GitLab from Slack. Slash commands are configured separately.
 1. Optional. In **Username**, enter the username of the Slack bot that sends
    the notifications.
 1. Select the **Notify only broken pipelines** checkbox to notify only on failures.
-1. In the **Branches for which notifications are to be sent** dropdown, select which types of branches
+1. In the **Branches for which notifications are to be sent** dropdown list, select which types of branches
    to send notifications for.
 1. Leave the **Labels to be notified** field blank to get all notifications, or
    add labels that the issue or merge request must have to trigger a
diff --git a/doc/user/project/integrations/unify_circuit.md b/doc/user/project/integrations/unify_circuit.md
index c13f642d9e9..77530b4b417 100644
--- a/doc/user/project/integrations/unify_circuit.md
+++ b/doc/user/project/integrations/unify_circuit.md
@@ -22,7 +22,7 @@ In GitLab:
 1. Select the checkboxes corresponding to the GitLab events you want to receive in Unify Circuit.
 1. Paste the **Webhook URL** that you copied from the Unify Circuit configuration step.
 1. Select the **Notify only broken pipelines** checkbox to notify only on failures.
-1. In the **Branches for which notifications are to be sent** dropdown, select which types of branches to send notifications for.
+1. In the **Branches for which notifications are to be sent** dropdown list, select which types of branches to send notifications for.
 1. Select `Save changes` or optionally select **Test settings**.
 
 Your Unify Circuit conversation now starts receiving GitLab event notifications.
diff --git a/doc/user/project/issues/due_dates.md b/doc/user/project/issues/due_dates.md
index 6293fe981de..f41c90a74a5 100644
--- a/doc/user/project/issues/due_dates.md
+++ b/doc/user/project/issues/due_dates.md
@@ -35,7 +35,7 @@ The last way to set a due date is by using [quick actions](../quick_actions.md),
 
 You can see issues with their due dates in the issues list.
 Overdue issues have their icon and date colored red.
-To sort issues by their due dates, select **Due date** from the dropdown menu on the right.
+To sort issues by their due dates, select **Due date** from the dropdown list on the right.
 Issues are then sorted from the earliest due date to the latest.
 To display issues with the latest due dates at the top, select **Sort direction** (**{sort-lowest}**).
 
diff --git a/doc/user/project/merge_requests/reviews/data_usage.md b/doc/user/project/merge_requests/reviews/data_usage.md
index 56fb84c8085..3a3af7a24bc 100644
--- a/doc/user/project/merge_requests/reviews/data_usage.md
+++ b/doc/user/project/merge_requests/reviews/data_usage.md
@@ -19,7 +19,7 @@ This data extraction job can take a few hours to complete (possibly up to a day)
 
 ### Generating suggestions
 
-Once Suggested Reviewers is enabled and the data extraction is complete, new merge requests or new commits to existing merge requests will automatically trigger a Suggested Reviewers ML model inference and generate up to 5 suggested reviewers. These suggestions are contextual to the changes in the merge request. Additional commits to merge requests may change the reviewer suggestions which will automatically update in the reviewer dropdown.
+Once Suggested Reviewers is enabled and the data extraction is complete, new merge requests or new commits to existing merge requests will automatically trigger a Suggested Reviewers ML model inference and generate up to 5 suggested reviewers. These suggestions are contextual to the changes in the merge request. Additional commits to merge requests may change the reviewer suggestions which will automatically update in the reviewer dropdown list.
 
 ## Progressive enhancement
 
diff --git a/doc/user/project/merge_requests/reviews/index.md b/doc/user/project/merge_requests/reviews/index.md
index ce1fc94395c..4c503211513 100644
--- a/doc/user/project/merge_requests/reviews/index.md
+++ b/doc/user/project/merge_requests/reviews/index.md
@@ -39,7 +39,7 @@ Project Maintainers or Owners can enable suggested reviewers by visiting the [pr
 
 Enabling suggested reviewers will trigger GitLab to create an ML model for your project that will be used to generate reviewers. The larger your project, the longer this can take, but usually, the model will be ready to generate suggestions within a few hours.
 
-No action is required once the feature is enabled. Once the model is ready, recommendations will populate the Reviewer dropdown in the right-hand sidebar of a merge request with new commits.
+No action is required once the feature is enabled. Once the model is ready, recommendations will populate the Reviewer dropdown list in the right-hand sidebar of a merge request with new commits.
 
 ## Review a merge request
 
diff --git a/doc/user/project/merge_requests/versions.md b/doc/user/project/merge_requests/versions.md
index 6f29272f003..4e285baa542 100644
--- a/doc/user/project/merge_requests/versions.md
+++ b/doc/user/project/merge_requests/versions.md
@@ -16,12 +16,12 @@ request diffs.
 ## Selecting a version
 
 By default, the latest version of changes is shown. However, you
-can select an older one from version dropdown.
+can select an older one from version dropdown list.
 
-![Merge request versions dropdown](img/versions_dropdown.png)
+![Merge request versions dropdown list](img/versions_dropdown.png)
 
 Merge request versions are based on push not on commit. So, if you pushed 5
-commits in a single push, it displays as a single option in the dropdown. If you
+commits in a single push, it displays as a single option in the dropdown list. If you
 pushed 5 times, that counts for 5 options.
 
 You can also compare the merge request version with an older one to see what has
diff --git a/doc/user/project/pages/custom_domains_ssl_tls_certification/index.md b/doc/user/project/pages/custom_domains_ssl_tls_certification/index.md
index 5ee1fa103a4..6378d962ffe 100644
--- a/doc/user/project/pages/custom_domains_ssl_tls_certification/index.md
+++ b/doc/user/project/pages/custom_domains_ssl_tls_certification/index.md
@@ -250,7 +250,7 @@ can use the following setup:
      on the top nav.
    - Select **Create Page Rule**.
    - Enter the domain `www.domain.com` and select **+ Add a Setting**.
-   - From the dropdown menu, choose **Forwarding URL**, then select the
+   - From the dropdown list, choose **Forwarding URL**, then select the
      status code **301 - Permanent Redirect**.
    - Enter the destination URL `https://domain.com`.
 
diff --git a/lib/gitlab/cache/metrics.rb b/lib/gitlab/cache/metrics.rb
new file mode 100644
index 00000000000..0143052beb1
--- /dev/null
+++ b/lib/gitlab/cache/metrics.rb
@@ -0,0 +1,87 @@
+# frozen_string_literal: true
+
+# Instrumentation for cache efficiency metrics
+module Gitlab
+  module Cache
+    class Metrics
+      DEFAULT_BUCKETS = [0, 1, 5].freeze
+      VALID_BACKING_RESOURCES = [:cpu, :database, :gitaly, :memory, :unknown].freeze
+      DEFAULT_BACKING_RESOURCE = :unknown
+
+      def initialize(
+        caller_id:,
+        cache_identifier:,
+        feature_category: ::Gitlab::FeatureCategories::FEATURE_CATEGORY_DEFAULT,
+        backing_resource: DEFAULT_BACKING_RESOURCE
+      )
+        @caller_id = caller_id
+        @cache_identifier = cache_identifier
+        @feature_category = Gitlab::FeatureCategories.default.get!(feature_category)
+        @backing_resource = fetch_backing_resource!(backing_resource)
+      end
+
+      # Increase cache hit counter
+      #
+      def increment_cache_hit
+        counter.increment(labels.merge(cache_hit: true))
+      end
+
+      # Increase cache miss counter
+      #
+      def increment_cache_miss
+        counter.increment(labels.merge(cache_hit: false))
+      end
+
+      # Measure the duration of cacheable action
+      #
+      # @example
+      #   observe_cache_generation do
+      #     cacheable_action
+      #   end
+      #
+      def observe_cache_generation(&block)
+        real_start = Gitlab::Metrics::System.monotonic_time
+
+        value = yield
+
+        histogram.observe({}, Gitlab::Metrics::System.monotonic_time - real_start)
+
+        value
+      end
+
+      private
+
+      attr_reader :caller_id, :cache_identifier, :feature_category, :backing_resource
+
+      def counter
+        @counter ||= Gitlab::Metrics.counter(:redis_hit_miss_operations_total, "Hit/miss Redis cache counter")
+      end
+
+      def histogram
+        @histogram ||= Gitlab::Metrics.histogram(
+          :redis_cache_generation_duration_seconds,
+          'Duration of Redis cache generation',
+          labels,
+          DEFAULT_BUCKETS
+        )
+      end
+
+      def labels
+        @labels ||= {
+          caller_id: caller_id,
+          cache_identifier: cache_identifier,
+          feature_category: feature_category,
+          backing_resource: backing_resource
+        }
+      end
+
+      def fetch_backing_resource!(resource)
+        return resource if VALID_BACKING_RESOURCES.include?(resource)
+
+        raise "Unknown backing resource: #{resource}" if Gitlab.dev_or_test_env?
+
+        DEFAULT_BACKING_RESOURCE
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/feature_categories.rb b/lib/gitlab/feature_categories.rb
index d06f3b14fed..17586a94d7e 100644
--- a/lib/gitlab/feature_categories.rb
+++ b/lib/gitlab/feature_categories.rb
@@ -31,6 +31,14 @@ module Gitlab
       category
     end
 
+    def get!(feature_category)
+      return feature_category if valid?(feature_category)
+
+      raise "Unknown feature category: #{feature_category}" if Gitlab.dev_or_test_env?
+
+      FEATURE_CATEGORY_DEFAULT
+    end
+
     def valid?(category)
       categories.include?(category.to_s)
     end
diff --git a/locale/gitlab.pot b/locale/gitlab.pot
index bbd4f8c4bf1..0770868b551 100644
--- a/locale/gitlab.pot
+++ b/locale/gitlab.pot
@@ -36615,6 +36615,9 @@ msgstr ""
 msgid "SecurityReports|More info"
 msgstr ""
 
+msgid "SecurityReports|New vulnerabilities are vulnerabilities that the security scan detects in the merge request that are different to existing vulnerabilities in the default branch."
+msgstr ""
+
 msgid "SecurityReports|No activity"
 msgstr ""
 
@@ -36672,6 +36675,9 @@ msgstr ""
 msgid "SecurityReports|Security reports help page link"
 msgstr ""
 
+msgid "SecurityReports|Security scan results"
+msgstr ""
+
 msgid "SecurityReports|Security scans have run"
 msgstr ""
 
diff --git a/package.json b/package.json
index 8141f748555..1101cb65fd6 100644
--- a/package.json
+++ b/package.json
@@ -219,7 +219,7 @@
     "cheerio": "^1.0.0-rc.9",
     "commander": "^2.20.3",
     "custom-jquery-matchers": "^2.1.0",
-    "eslint": "8.25.0",
+    "eslint": "8.26.0",
     "eslint-import-resolver-jest": "3.0.2",
     "eslint-import-resolver-webpack": "0.13.2",
     "eslint-plugin-import": "^2.26.0",
diff --git a/rubocop/cop/gitlab/json.rb b/rubocop/cop/gitlab/json.rb
index 3ccb22aacf2..32bfdd9bfdc 100644
--- a/rubocop/cop/gitlab/json.rb
+++ b/rubocop/cop/gitlab/json.rb
@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require_relative '../../../lib/gitlab/json'
-
 module RuboCop
   module Cop
     module Gitlab
@@ -12,6 +10,8 @@ module RuboCop
           Prefer `Gitlab::Json` over calling `JSON` or `to_json` directly. See https://docs.gitlab.com/ee/development/json.html
         EOL
 
+        AVAILABLE_METHODS = %i[parse parse! load decode dump generate encode pretty_generate].to_set.freeze
+
         def_node_matcher :json_node?, <<~PATTERN
           (send (const {nil? | (const nil? :ActiveSupport)} :JSON) $_ $...)
         PATTERN
@@ -37,12 +37,12 @@ module RuboCop
           method_name, arg_nodes = json_node?(node)
 
           # Only match if the method is implemented by Gitlab::Json
-          if method_name && ::Gitlab::Json.methods(false).include?(method_name)
+          if method_name && AVAILABLE_METHODS.include?(method_name)
             return [method_name, arg_nodes.map(&:source).join(', ')]
           end
 
           receiver = to_json_call?(node)
-          return [:generate, receiver.source] if receiver
+          return [:dump, receiver.source] if receiver
 
           nil
         end
diff --git a/spec/lib/gitlab/cache/metrics_spec.rb b/spec/lib/gitlab/cache/metrics_spec.rb
new file mode 100644
index 00000000000..d8103837708
--- /dev/null
+++ b/spec/lib/gitlab/cache/metrics_spec.rb
@@ -0,0 +1,118 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Cache::Metrics do
+  subject(:metrics) do
+    described_class.new(
+      caller_id: caller_id,
+      cache_identifier: cache_identifier,
+      feature_category: feature_category,
+      backing_resource: backing_resource
+    )
+  end
+
+  let(:caller_id) { 'caller-id' }
+  let(:cache_identifier) { 'ApplicationController#show' }
+  let(:feature_category) { :source_code_management }
+  let(:backing_resource) { :unknown }
+
+  let(:counter_mock) { instance_double(Prometheus::Client::Counter) }
+
+  before do
+    allow(Gitlab::Metrics).to receive(:counter)
+      .with(
+        :redis_hit_miss_operations_total,
+        'Hit/miss Redis cache counter'
+      ).and_return(counter_mock)
+  end
+
+  describe '#initialize' do
+    context 'when backing resource is not supported' do
+      let(:backing_resource) { 'foo' }
+
+      it { expect { metrics }.to raise_error(RuntimeError) }
+
+      context 'when on production' do
+        before do
+          allow(Gitlab).to receive(:dev_or_test_env?).and_return(false)
+        end
+
+        it 'does not raise an exception' do
+          expect { metrics }.not_to raise_error
+        end
+      end
+    end
+  end
+
+  describe '#increment_cache_hit' do
+    subject { metrics.increment_cache_hit }
+
+    it 'increments number of hits' do
+      expect(counter_mock)
+        .to receive(:increment)
+        .with(
+          {
+            caller_id: caller_id,
+            cache_identifier: cache_identifier,
+            feature_category: feature_category,
+            backing_resource: backing_resource,
+            cache_hit: true
+          }
+        ).once
+
+      subject
+    end
+  end
+
+  describe '#increment_cache_miss' do
+    subject { metrics.increment_cache_miss }
+
+    it 'increments number of misses' do
+      expect(counter_mock)
+        .to receive(:increment)
+        .with(
+          {
+            caller_id: caller_id,
+            cache_identifier: cache_identifier,
+            feature_category: feature_category,
+            backing_resource: backing_resource,
+            cache_hit: false
+          }
+        ).once
+
+      subject
+    end
+  end
+
+  describe '#observe_cache_generation' do
+    subject do
+      metrics.observe_cache_generation { action }
+    end
+
+    let(:action) { 'action' }
+    let(:histogram_mock) { instance_double(Prometheus::Client::Histogram) }
+
+    before do
+      allow(Gitlab::Metrics::System).to receive(:monotonic_time).and_return(100.0, 500.0)
+    end
+
+    it 'updates histogram metric' do
+      expect(Gitlab::Metrics).to receive(:histogram).with(
+        :redis_cache_generation_duration_seconds,
+        'Duration of Redis cache generation',
+        {
+          caller_id: caller_id,
+          cache_identifier: cache_identifier,
+          feature_category: feature_category,
+          backing_resource: backing_resource
+        },
+        [0, 1, 5]
+      ).and_return(histogram_mock)
+
+      expect(histogram_mock).to receive(:observe).with({}, 400.0)
+
+      is_expected.to eq(action)
+    end
+  end
+end
diff --git a/spec/lib/gitlab/feature_categories_spec.rb b/spec/lib/gitlab/feature_categories_spec.rb
index 477da900d0a..a35166a4499 100644
--- a/spec/lib/gitlab/feature_categories_spec.rb
+++ b/spec/lib/gitlab/feature_categories_spec.rb
@@ -5,7 +5,7 @@ require 'spec_helper'
 RSpec.describe Gitlab::FeatureCategories do
   let(:fake_categories) { %w(foo bar) }
 
-  subject { described_class.new(fake_categories) }
+  subject(:feature_categories) { described_class.new(fake_categories) }
 
   describe "#valid?" do
     it "returns true if category is known", :aggregate_failures do
@@ -14,6 +14,28 @@ RSpec.describe Gitlab::FeatureCategories do
     end
   end
 
+  describe '#get!' do
+    subject { feature_categories.get!(category) }
+
+    let(:category) { 'foo' }
+
+    it { is_expected.to eq('foo') }
+
+    context 'when category does not exist' do
+      let(:category) { 'zzz' }
+
+      it { expect { subject }.to raise_error(RuntimeError) }
+
+      context 'when on production' do
+        before do
+          allow(Gitlab).to receive(:dev_or_test_env?).and_return(false)
+        end
+
+        it { is_expected.to eq('unknown') }
+      end
+    end
+  end
+
   describe "#from_request" do
     let(:request_env) { {} }
     let(:verified) { true }
diff --git a/spec/rubocop/cop/gitlab/json_spec.rb b/spec/rubocop/cop/gitlab/json_spec.rb
index bf8a250b55c..bf0acaf0498 100644
--- a/spec/rubocop/cop/gitlab/json_spec.rb
+++ b/spec/rubocop/cop/gitlab/json_spec.rb
@@ -60,7 +60,7 @@ RSpec.describe RuboCop::Cop::Gitlab::Json do
       expect_correction(<<~RUBY)
         class Foo
           def bar
-            Gitlab::Json.generate({ foo: "bar" })
+            Gitlab::Json.dump({ foo: "bar" })
           end
         end
       RUBY
diff --git a/spec/services/protected_branches/cache_service_spec.rb b/spec/services/protected_branches/cache_service_spec.rb
index 00d1e8b5457..d7a3258160b 100644
--- a/spec/services/protected_branches/cache_service_spec.rb
+++ b/spec/services/protected_branches/cache_service_spec.rb
@@ -111,5 +111,16 @@ RSpec.describe ProtectedBranches::CacheService, :clean_gitlab_redis_cache do
       expect(service.fetch('not-found') { true }).to eq(true)
     end
   end
+
+  describe 'metrics' do
+    it 'records hit ratio metrics' do
+      expect_next_instance_of(Gitlab::Cache::Metrics) do |metrics|
+        expect(metrics).to receive(:increment_cache_miss).once
+        expect(metrics).to receive(:increment_cache_hit).exactly(4).times
+      end
+
+      5.times { service.fetch('main') { true } }
+    end
+  end
 end
 # rubocop:enable Style/RedundantFetchBlock
diff --git a/vendor/gems/ipynbdiff/lib/transformer.rb b/vendor/gems/ipynbdiff/lib/transformer.rb
index 1b2c63bb35c..9e666a20aa5 100644
--- a/vendor/gems/ipynbdiff/lib/transformer.rb
+++ b/vendor/gems/ipynbdiff/lib/transformer.rb
@@ -27,7 +27,7 @@ module IpynbDiff
     def validate_notebook(notebook)
       notebook_json = Oj::Parser.usual.parse(notebook)
 
-      return notebook_json if notebook_json.key?('cells')
+      return notebook_json if notebook_json&.key?('cells')
 
       raise InvalidNotebookError
     rescue EncodingError, Oj::ParseError, JSON::ParserError
diff --git a/vendor/gems/ipynbdiff/spec/transformer_spec.rb b/vendor/gems/ipynbdiff/spec/transformer_spec.rb
index c5873906ca9..660d0a2bd79 100644
--- a/vendor/gems/ipynbdiff/spec/transformer_spec.rb
+++ b/vendor/gems/ipynbdiff/spec/transformer_spec.rb
@@ -102,5 +102,16 @@ describe IpynbDiff::Transformer do
         end
       end
     end
+
+    context 'when notebook can not be parsed' do
+      it 'raises error' do
+        notebook = '{"cells":[]}'
+        allow(Oj::Parser.usual).to receive(:parse).and_return(nil)
+
+        expect do
+          IpynbDiff::Transformer.new.transform(notebook)
+        end.to raise_error(IpynbDiff::InvalidNotebookError)
+      end
+    end
   end
 end
diff --git a/yarn.lock b/yarn.lock
index 29afc1d2f3a..f9063cf1e62 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1312,10 +1312,10 @@
   resolved "https://registry.yarnpkg.com/@graphql-typed-document-node/core/-/core-3.1.0.tgz#0eee6373e11418bfe0b5638f654df7a4ca6a3950"
   integrity sha512-wYn6r8zVZyQJ6rQaALBEln5B1pzxb9shV5Ef97kTvn6yVGrqyXVnDqnU24MXnFubR+rZjBY9NWuxX3FB2sTsjg==
 
-"@humanwhocodes/config-array@^0.10.5":
-  version "0.10.5"
-  resolved "https://registry.yarnpkg.com/@humanwhocodes/config-array/-/config-array-0.10.5.tgz#bb679745224745fff1e9a41961c1d45a49f81c04"
-  integrity sha512-XVVDtp+dVvRxMoxSiSfasYaG02VEe1qH5cKgMQJWhol6HwzbcqoCMJi8dAGoYAO57jhUyhI6cWuRiTcRaDaYug==
+"@humanwhocodes/config-array@^0.11.6":
+  version "0.11.6"
+  resolved "https://registry.yarnpkg.com/@humanwhocodes/config-array/-/config-array-0.11.6.tgz#6a51d603a3aaf8d4cf45b42b3f2ac9318a4adc4b"
+  integrity sha512-jJr+hPTJYKyDILJfhNSHsjiwXYf26Flsz8DvNndOsHs5pwSnpGUEy8yzF0JYhCEvTDdV2vuOK5tt8BVhwO5/hg==
   dependencies:
     "@humanwhocodes/object-schema" "^1.2.1"
     debug "^4.1.1"
@@ -1597,7 +1597,7 @@
   resolved "https://registry.yarnpkg.com/@nodelib/fs.stat/-/fs.stat-2.0.5.tgz#5bd262af94e9d25bd1e71b05deed44876a222e8b"
   integrity sha512-RkhPPp2zrqDAQA/2jNhnztcPAlv64XdhIp7a7454A5ovI7Bukxgt7MX7udwAu3zg1DcpPU0rz3VV1SeaqvY4+A==
 
-"@nodelib/fs.walk@^1.2.3":
+"@nodelib/fs.walk@^1.2.3", "@nodelib/fs.walk@^1.2.8":
   version "1.2.8"
   resolved "https://registry.yarnpkg.com/@nodelib/fs.walk/-/fs.walk-1.2.8.tgz#e95737e8bb6746ddedf69c556953494f196fe69a"
   integrity sha512-oGB+UxlgWcgQkgwo8GcEGwemoTFt3FIO9ababBmaGwXIoBKZ+GTy0pP185beGg7Llih/NSHSV2XAs1lnznocSg==
@@ -5570,14 +5570,15 @@ eslint-visitor-keys@^3.3.0:
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-3.3.0.tgz#f6480fa6b1f30efe2d1968aa8ac745b862469826"
   integrity sha512-mQ+suqKJVyeuwGYHAdjMFqjCyfl8+Ldnxuyp3ldiMBFKkvytrXUZWaiPCEav8qDHKty44bD+qV1IP4T+w+xXRA==
 
-eslint@8.25.0:
-  version "8.25.0"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-8.25.0.tgz#00eb962f50962165d0c4ee3327708315eaa8058b"
-  integrity sha512-DVlJOZ4Pn50zcKW5bYH7GQK/9MsoQG2d5eDH0ebEkE8PbgzTTmtt/VTH9GGJ4BfeZCpBLqFfvsjX35UacUL83A==
+eslint@8.26.0:
+  version "8.26.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-8.26.0.tgz#2bcc8836e6c424c4ac26a5674a70d44d84f2181d"
+  integrity sha512-kzJkpaw1Bfwheq4VXUezFriD1GxszX6dUekM7Z3aC2o4hju+tsR/XyTC3RcoSD7jmy9VkPU3+N6YjVU2e96Oyg==
   dependencies:
     "@eslint/eslintrc" "^1.3.3"
-    "@humanwhocodes/config-array" "^0.10.5"
+    "@humanwhocodes/config-array" "^0.11.6"
     "@humanwhocodes/module-importer" "^1.0.1"
+    "@nodelib/fs.walk" "^1.2.8"
     ajv "^6.10.0"
     chalk "^4.0.0"
     cross-spawn "^7.0.2"
@@ -5593,14 +5594,14 @@ eslint@8.25.0:
     fast-deep-equal "^3.1.3"
     file-entry-cache "^6.0.1"
     find-up "^5.0.0"
-    glob-parent "^6.0.1"
+    glob-parent "^6.0.2"
     globals "^13.15.0"
-    globby "^11.1.0"
     grapheme-splitter "^1.0.4"
     ignore "^5.2.0"
     import-fresh "^3.0.0"
     imurmurhash "^0.1.4"
     is-glob "^4.0.0"
+    is-path-inside "^3.0.3"
     js-sdsl "^4.1.4"
     js-yaml "^4.1.0"
     json-stable-stringify-without-jsonify "^1.0.1"
@@ -6237,7 +6238,7 @@ glob-parent@^5.1.1, glob-parent@^5.1.2, glob-parent@~5.1.2:
   dependencies:
     is-glob "^4.0.1"
 
-glob-parent@^6.0.1:
+glob-parent@^6.0.2:
   version "6.0.2"
   resolved "https://registry.yarnpkg.com/glob-parent/-/glob-parent-6.0.2.tgz#6d237d99083950c79290f24c7642a3de9a28f9e3"
   integrity sha512-XxwI8EOhVQgWp6iDL+3b0r86f4d6AX6zSU55HfB4ydCEuXLXc5FcYeOu+nnGftS4TEju/11rt4KJPTMgbfmv4A==
@@ -7117,6 +7118,11 @@ is-number@^7.0.0:
   resolved "https://registry.yarnpkg.com/is-number/-/is-number-7.0.0.tgz#7535345b896734d5f80c4d06c50955527a14f12b"
   integrity sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==
 
+is-path-inside@^3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/is-path-inside/-/is-path-inside-3.0.3.tgz#d231362e53a07ff2b0e0ea7fed049161ffd16283"
+  integrity sha512-Fd4gABb+ycGAmKou8eMftCupSir5lRxqf4aD/vd0cD2qc4HL07OjCeuHMr8Ro4CoMaeCKDB0/ECBOVWjTwUvPQ==
+
 is-plain-obj@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-plain-obj/-/is-plain-obj-1.1.0.tgz#71a50c8429dfca773c92a390a4a03b39fcd51d3e"