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author | Bob Van Landuyt <bob@vanlanduyt.co> | 2018-03-06 18:02:28 +0100 |
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committer | Bob Van Landuyt <bob@vanlanduyt.co> | 2018-03-21 13:39:49 +0100 |
commit | 272a5a07b3a07a49714775a0f1bca2f0ef440451 (patch) | |
tree | 43db647cf7fd8eec1cbb0fbb448218405c174a1f | |
parent | ce6edaf03082e4c11bf148f2eb47bb0bf31ce6d8 (diff) | |
download | gitlab-ce-272a5a07b3a07a49714775a0f1bca2f0ef440451.tar.gz |
Add index on lower path to redirect routes
This will speed up the LIKE query in
RedirectRoute.matching_path_and_descendants
-rw-r--r-- | db/post_migrate/20180306164012_add_path_index_to_redirect_routes.rb | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/db/post_migrate/20180306164012_add_path_index_to_redirect_routes.rb b/db/post_migrate/20180306164012_add_path_index_to_redirect_routes.rb new file mode 100644 index 00000000000..f8cac2f2b5e --- /dev/null +++ b/db/post_migrate/20180306164012_add_path_index_to_redirect_routes.rb @@ -0,0 +1,34 @@ +# See http://doc.gitlab.com/ce/development/migration_style_guide.html +# for more information on how to write migrations for GitLab. + +class AddPathIndexToRedirectRoutes < ActiveRecord::Migration + include Gitlab::Database::MigrationHelpers + + # Set this constant to true if this migration requires downtime. + DOWNTIME = false + disable_ddl_transaction! + + INDEX_NAME = 'index_redirect_routes_on_path_unique_text_pattern_ops' + + # Indexing on LOWER(path) varchar_pattern_ops speeds up the LIKE query in + # RedirectRoute.matching_path_and_descendants + # + def up + return unless Gitlab::Database.postgresql? + + disable_statement_timeout + + if_not_exists = Gitlab::Database.version.to_f >= 9.5 ? "IF NOT EXISTS" : "" + + # Unique index on lower(path) across both types of redirect_routes: + execute("CREATE UNIQUE INDEX CONCURRENTLY #{if_not_exists} #{INDEX_NAME} ON redirect_routes (lower(path) varchar_pattern_ops);") + end + + def down + return unless Gitlab::Database.postgresql? + + disable_statement_timeout + + execute("DROP INDEX IF EXISTS #{INDEX_NAME};") + end +end |