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Fix slow query of federated timeline (#12886)

gh/stable
notozeki 2020-01-22 02:56:34 +09:00 committed by Eugen Rochko
parent 26988be57d
commit e1c5f43039
2 changed files with 13 additions and 1 deletions
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11
db/migrate/20200119112504_add_public_index_to_statuses.rb 100644
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@ -0,0 +1,11 @@
class AddPublicIndexToStatuses < ActiveRecord::Migration[5.2]
disable_ddl_transaction!
def up
add_index :statuses, [:id, :account_id], name: :index_statuses_public_20200119, algorithm: :concurrently, order: { id: :desc }, where: 'deleted_at IS NULL AND visibility = 0 AND reblog_of_id IS NULL AND ((NOT reply) OR (in_reply_to_account_id = account_id))'
end
def down
remove_index :statuses, name: :index_statuses_public_20200119
end
end

3
db/schema.rb
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@ -10,7 +10,7 @@
#
# It's strongly recommended that you check this file into your version control system.
ActiveRecord::Schema.define(version: 2019_12_12_003415) do
ActiveRecord::Schema.define(version: 2020_01_19_112504) do
# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"
@ -690,6 +690,7 @@ ActiveRecord::Schema.define(version: 2019_12_12_003415) do
t.datetime "deleted_at"
t.index ["account_id", "id", "visibility", "updated_at"], name: "index_statuses_20190820", order: { id: :desc }, where: "(deleted_at IS NULL)"
t.index ["id", "account_id"], name: "index_statuses_local_20190824", order: { id: :desc }, where: "((local OR (uri IS NULL)) AND (deleted_at IS NULL) AND (visibility = 0) AND (reblog_of_id IS NULL) AND ((NOT reply) OR (in_reply_to_account_id = account_id)))"
t.index ["id", "account_id"], name: "index_statuses_public_20200119", order: { id: :desc }, where: "((deleted_at IS NULL) AND (visibility = 0) AND (reblog_of_id IS NULL) AND ((NOT reply) OR (in_reply_to_account_id = account_id)))"
t.index ["in_reply_to_account_id"], name: "index_statuses_on_in_reply_to_account_id"
t.index ["in_reply_to_id"], name: "index_statuses_on_in_reply_to_id"
t.index ["reblog_of_id", "account_id"], name: "index_statuses_on_reblog_of_id_and_account_id"