Change materialized views to be refreshed concurrently to avoid locks (#29015)
parent
c4af668e5c
commit
fa0ba67753
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@ -19,6 +19,8 @@ class AccountSummary < ApplicationRecord
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scope :filtered, -> { where.missing(:follow_recommendation_suppressions) }
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scope :filtered, -> { where.missing(:follow_recommendation_suppressions) }
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def self.refresh
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def self.refresh
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Scenic.database.refresh_materialized_view(table_name, concurrently: true, cascade: false)
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rescue ActiveRecord::StatementInvalid
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Scenic.database.refresh_materialized_view(table_name, concurrently: false, cascade: false)
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Scenic.database.refresh_materialized_view(table_name, concurrently: false, cascade: false)
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end
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end
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@ -19,6 +19,8 @@ class FollowRecommendation < ApplicationRecord
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scope :localized, ->(locale) { joins(:account_summary).merge(AccountSummary.localized(locale)) }
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scope :localized, ->(locale) { joins(:account_summary).merge(AccountSummary.localized(locale)) }
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def self.refresh
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def self.refresh
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Scenic.database.refresh_materialized_view(table_name, concurrently: true, cascade: false)
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rescue ActiveRecord::StatementInvalid
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Scenic.database.refresh_materialized_view(table_name, concurrently: false, cascade: false)
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Scenic.database.refresh_materialized_view(table_name, concurrently: false, cascade: false)
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end
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end
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@ -2,7 +2,7 @@
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class CreateAccountSummaries < ActiveRecord::Migration[5.2]
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class CreateAccountSummaries < ActiveRecord::Migration[5.2]
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def change
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def change
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create_view :account_summaries, materialized: { no_data: true }
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create_view :account_summaries, materialized: true
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# To be able to refresh the view concurrently,
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# To be able to refresh the view concurrently,
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# at least one unique index is required
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# at least one unique index is required
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@ -6,7 +6,7 @@ class UpdateFollowRecommendationsToVersion2 < ActiveRecord::Migration[6.1]
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def up
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def up
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drop_view :follow_recommendations
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drop_view :follow_recommendations
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create_view :follow_recommendations, version: 2, materialized: { no_data: true }
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create_view :follow_recommendations, version: 2, materialized: true
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# To be able to refresh the view concurrently,
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# To be able to refresh the view concurrently,
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# at least one unique index is required
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# at least one unique index is required
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@ -4,7 +4,7 @@ class UpdateAccountSummariesToVersion2 < ActiveRecord::Migration[6.1]
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def up
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def up
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reapplication_follow_recommendations_v2 do
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reapplication_follow_recommendations_v2 do
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drop_view :account_summaries, materialized: true
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drop_view :account_summaries, materialized: true
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create_view :account_summaries, version: 2, materialized: { no_data: true }
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create_view :account_summaries, version: 2, materialized: true
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safety_assured { add_index :account_summaries, :account_id, unique: true }
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safety_assured { add_index :account_summaries, :account_id, unique: true }
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end
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end
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end
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end
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@ -12,7 +12,7 @@ class UpdateAccountSummariesToVersion2 < ActiveRecord::Migration[6.1]
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def down
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def down
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reapplication_follow_recommendations_v2 do
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reapplication_follow_recommendations_v2 do
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drop_view :account_summaries, materialized: true
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drop_view :account_summaries, materialized: true
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create_view :account_summaries, version: 1, materialized: { no_data: true }
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create_view :account_summaries, version: 1, materialized: true
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safety_assured { add_index :account_summaries, :account_id, unique: true }
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safety_assured { add_index :account_summaries, :account_id, unique: true }
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end
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end
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end
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end
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@ -20,7 +20,7 @@ class UpdateAccountSummariesToVersion2 < ActiveRecord::Migration[6.1]
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def reapplication_follow_recommendations_v2
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def reapplication_follow_recommendations_v2
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drop_view :follow_recommendations, materialized: true
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drop_view :follow_recommendations, materialized: true
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yield
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yield
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create_view :follow_recommendations, version: 2, materialized: { no_data: true }
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create_view :follow_recommendations, version: 2, materialized: true
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safety_assured { add_index :follow_recommendations, :account_id, unique: true }
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safety_assured { add_index :follow_recommendations, :account_id, unique: true }
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end
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end
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end
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end
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@ -2,7 +2,7 @@
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class CreateGlobalFollowRecommendations < ActiveRecord::Migration[7.0]
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class CreateGlobalFollowRecommendations < ActiveRecord::Migration[7.0]
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def change
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def change
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create_view :global_follow_recommendations, materialized: { no_data: true }
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create_view :global_follow_recommendations, materialized: true
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safety_assured { add_index :global_follow_recommendations, :account_id, unique: true }
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safety_assured { add_index :global_follow_recommendations, :account_id, unique: true }
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end
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end
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end
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end
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@ -6,7 +6,7 @@ class DropFollowRecommendations < ActiveRecord::Migration[7.0]
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end
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end
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def down
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def down
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create_view :follow_recommendations, version: 2, materialized: { no_data: true }
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create_view :follow_recommendations, version: 2, materialized: true
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safety_assured { add_index :follow_recommendations, :account_id, unique: true }
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safety_assured { add_index :follow_recommendations, :account_id, unique: true }
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end
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end
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end
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end
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