diff options
| -rw-r--r-- | changelogs/unreleased/add-indexes-to-todos-for-heavy-users-like-sean.yml | 5 | ||||
| -rw-r--r-- | db/migrate/20180309160427_add_partial_indexes_on_todos.rb | 28 | ||||
| -rw-r--r-- | db/schema.rb | 4 |
3 files changed, 36 insertions, 1 deletions
diff --git a/changelogs/unreleased/add-indexes-to-todos-for-heavy-users-like-sean.yml b/changelogs/unreleased/add-indexes-to-todos-for-heavy-users-like-sean.yml new file mode 100644 index 00000000000..f0e5103a9d9 --- /dev/null +++ b/changelogs/unreleased/add-indexes-to-todos-for-heavy-users-like-sean.yml @@ -0,0 +1,5 @@ +--- +title: Add partial indexes on todos to handle users with many todos +merge_request: +author: +type: performance diff --git a/db/migrate/20180309160427_add_partial_indexes_on_todos.rb b/db/migrate/20180309160427_add_partial_indexes_on_todos.rb new file mode 100644 index 00000000000..18a5c69df1b --- /dev/null +++ b/db/migrate/20180309160427_add_partial_indexes_on_todos.rb @@ -0,0 +1,28 @@ +# See http://doc.gitlab.com/ce/development/migration_style_guide.html +# for more information on how to write migrations for GitLab. + +class AddPartialIndexesOnTodos < ActiveRecord::Migration + include Gitlab::Database::MigrationHelpers + + # Set this constant to true if this migration requires downtime. + DOWNTIME = false + + disable_ddl_transaction! + + INDEX_NAME_PENDING="index_todos_on_user_id_and_id_pending" + INDEX_NAME_DONE="index_todos_on_user_id_and_id_done" + + def up + unless index_exists?(:todos, [:user_id, :id], name: INDEX_NAME_PENDING) + add_concurrent_index(:todos, [:user_id, :id], where: "state='pending'", name: INDEX_NAME_PENDING) + end + unless index_exists?(:todos, [:user_id, :id], name: INDEX_NAME_DONE) + add_concurrent_index(:todos, [:user_id, :id], where: "state='done'", name: INDEX_NAME_DONE) + end + end + + def down + remove_concurrent_index(:todos, [:user_id, :id], where: "state='pending'", name: INDEX_NAME_PENDING) + remove_concurrent_index(:todos, [:user_id, :id], where: "state='done'", name: INDEX_NAME_DONE) + end +end diff --git a/db/schema.rb b/db/schema.rb index 970b1ad9948..ab4370e2754 100644 --- a/db/schema.rb +++ b/db/schema.rb @@ -11,7 +11,7 @@ # # It's strongly recommended that you check this file into your version control system. -ActiveRecord::Schema.define(version: 20180309121820) do +ActiveRecord::Schema.define(version: 20180309160427) do # These are extensions that must be enabled in order to support this database enable_extension "plpgsql" @@ -1778,6 +1778,8 @@ ActiveRecord::Schema.define(version: 20180309121820) do add_index "todos", ["note_id"], name: "index_todos_on_note_id", using: :btree add_index "todos", ["project_id"], name: "index_todos_on_project_id", using: :btree add_index "todos", ["target_type", "target_id"], name: "index_todos_on_target_type_and_target_id", using: :btree + add_index "todos", ["user_id", "id"], name: "index_todos_on_user_id_and_id_done", where: "((state)::text = 'done'::text)", using: :btree + add_index "todos", ["user_id", "id"], name: "index_todos_on_user_id_and_id_pending", where: "((state)::text = 'pending'::text)", using: :btree add_index "todos", ["user_id"], name: "index_todos_on_user_id", using: :btree create_table "trending_projects", force: :cascade do |t| |