Enable avatar cache feature

Removes the avatar_cache_for_email feature flag.

app/helpers/avatars_helper.rb

@@ -24,11 +24,7 @@ module AvatarsHelper
   def avatar_icon_for_email(email = nil, size = nil, scale = 2, only_path: true)
     return gravatar_icon(email, size, scale) if email.nil?
 
-    if Feature.enabled?(:avatar_cache_for_email, @current_user, type: :development)
-      Gitlab::AvatarCache.by_email(email, size, scale, only_path) do
-        avatar_icon_by_user_email_or_gravatar(email, size, scale, only_path: only_path)
-      end
-    else
+    Gitlab::AvatarCache.by_email(email, size, scale, only_path) do
       avatar_icon_by_user_email_or_gravatar(email, size, scale, only_path: only_path)
     end
   end

app/models/concerns/avatarable.rb

@@ -131,7 +131,6 @@ module Avatarable
 
   def clear_avatar_caches
     return unless respond_to?(:verified_emails) && verified_emails.any? && avatar_changed?
-    return unless Feature.enabled?(:avatar_cache_for_email, self, type: :development)
 
     Gitlab::AvatarCache.delete_by_email(*verified_emails)
   end

changelogs/unreleased/remove-avatar-cache-ff.yml

+---
+title: Enable cached avatar lookups by email
+merge_request: 58659
+author:
+type: performance

config/feature_flags/development/avatar_cache_for_email.yml

----
-name: avatar_cache_for_email
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/55184
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/323185
-milestone: '13.10'
-type: development
-group: group::source code
-default_enabled: false

spec/helpers/avatars_helper_spec.rb

@@ -121,27 +121,13 @@ RSpec.describe AvatarsHelper do
       end
     end
 
-    context "when :avatar_cache_for_email flag is enabled" do
-      before do
-        stub_feature_flags(avatar_cache_for_email: true)
-      end
-
-      it_behaves_like "returns avatar for email"
+    it_behaves_like "returns avatar for email"
 
-      it "caches the request" do
-        expect(User).to receive(:find_by_any_email).once.and_call_original
-
-        expect(helper.avatar_icon_for_email(user.email).to_s).to eq(user.avatar.url)
-        expect(helper.avatar_icon_for_email(user.email).to_s).to eq(user.avatar.url)
-      end
-    end
-
-    context "when :avatar_cache_for_email flag is disabled" do
-      before do
-        stub_feature_flags(avatar_cache_for_email: false)
-      end
+    it "caches the request" do
+      expect(User).to receive(:find_by_any_email).once.and_call_original
 
-      it_behaves_like "returns avatar for email"
+      expect(helper.avatar_icon_for_email(user.email).to_s).to eq(user.avatar.url)
+      expect(helper.avatar_icon_for_email(user.email).to_s).to eq(user.avatar.url)
     end
   end
 

spec/models/user_spec.rb

@@ -2521,32 +2521,12 @@ RSpec.describe User do
   describe "#clear_avatar_caches" do
     let(:user) { create(:user) }
 
-    context "when :avatar_cache_for_email flag is enabled" do
-      before do
-        stub_feature_flags(avatar_cache_for_email: true)
-      end
-
-      it "clears the avatar cache when saving" do
-        allow(user).to receive(:avatar_changed?).and_return(true)
-
-        expect(Gitlab::AvatarCache).to receive(:delete_by_email).with(*user.verified_emails)
-
-        user.update(avatar: fixture_file_upload('spec/fixtures/dk.png'))
-      end
-    end
-
-    context "when :avatar_cache_for_email flag is disabled" do
-      before do
-        stub_feature_flags(avatar_cache_for_email: false)
-      end
-
-      it "doesn't attempt to clear the avatar cache" do
-        allow(user).to receive(:avatar_changed?).and_return(true)
+    it "clears the avatar cache when saving" do
+      allow(user).to receive(:avatar_changed?).and_return(true)
 
-        expect(Gitlab::AvatarCache).not_to receive(:delete_by_email)
+      expect(Gitlab::AvatarCache).to receive(:delete_by_email).with(*user.verified_emails)
 
-        user.update(avatar: fixture_file_upload('spec/fixtures/dk.png'))
-      end
+      user.update(avatar: fixture_file_upload('spec/fixtures/dk.png'))
     end
   end