4 files changed, 6 insertions, 22 deletions
diff --git a/app/controllers/projects/application_controller.rb b/app/controllers/projects/application_controller.rb
index 776ba92c9ab..996909a28c6 100644
--- a/app/controllers/projects/application_controller.rb
+++ b/app/controllers/projects/application_controller.rb
@@ -74,7 +74,7 @@ class Projects::ApplicationController < ApplicationController
   end
 
   def require_branch_head
-    unless @repository.branch_names.include?(@ref)
+    unless @repository.branch_exists?(@ref)
       redirect_to(
         namespace_project_tree_path(@project.namespace, @project, @ref),
         notice: "This action is not allowed unless you are on a branch"
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 439b015b3b8..479b6ddebef 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -132,7 +132,7 @@ module ApplicationHelper
     return false if project.merge_requests.where(source_branch: event.branch_name).opened.any?
 
     # Skip if user removed branch right after that
-    return false unless project.repository.branch_names.include?(event.branch_name)
+    return false unless project.repository.branch_exists?(event.branch_name)
 
     true
   end
diff --git a/app/helpers/branches_helper.rb b/app/helpers/branches_helper.rb
index 3ee3fc74f0c..c533659b600 100644
--- a/app/helpers/branches_helper.rb
+++ b/app/helpers/branches_helper.rb
@@ -10,7 +10,7 @@ module BranchesHelper
   end
 
   def can_push_branch?(project, branch_name)
-    return false unless project.repository.branch_names.include?(branch_name)
+    return false unless project.repository.branch_exists?(branch_name)
 
     ::Gitlab::GitAccess.new(current_user, project).can_push_to_branch?(branch_name)
   end
diff --git a/app/models/repository.rb b/app/models/repository.rb
index bbd7682d8e7..9b6806a3fb9 100644
--- a/app/models/repository.rb
+++ b/app/models/repository.rb
@@ -192,7 +192,7 @@ class Repository
   end
 
   def branch_names
-    cache.fetch(:branch_names) { branches.map(&:name) }
+    @branch_names ||= cache.fetch(:branch_names) { branches.map(&:name) }
   end
 
   def branch_exists?(branch_name)
@@ -267,6 +267,7 @@ class Repository
 
   def expire_branches_cache
     cache.expire(:branch_names)
+    @branch_names = nil
     @local_branches = nil
   end
 
@@ -332,10 +333,6 @@ class Repository
     @lookup_cache ||= {}
   end
 
-  def expire_branch_names
-    cache.expire(:branch_names)
-  end
-
   def expire_avatar_cache(branch_name = nil, revision = nil)
     # Avatars are pulled from the default branch, thus if somebody pushes to a
     # different branch there's no need to expire anything.
@@ -430,20 +427,7 @@ class Repository
     expire_branch_count_cache
     expire_branches_cache
   end
-
-  def method_missing(m, *args, &block)
-    if m == :lookup && !block_given?
-      lookup_cache[m] ||= {}
-      lookup_cache[m][args.join(":")] ||= raw_repository.send(m, *args, &block)
-    else
-      raw_repository.send(m, *args, &block)
-    end
-  end
-
-  def respond_to_missing?(method, include_private = false)
-    raw_repository.respond_to?(method, include_private) || super
-  end
-
+  
   def blob_at(sha, path)
     unless Gitlab::Git.blank_ref?(sha)
       Blob.decorate(Gitlab::Git::Blob.find(self, sha, path))