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FIX: performance of CategoryDetailedSerializer and Category.update_stats on large databases

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Neil Lalonde
2014-03-19 10:14:05 -04:00
parent 42ea20b439
commit 3ea477b17d
2 changed files with 91 additions and 26 deletions
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17
db/migrate/20140318203559_add_created_at_index_to_posts.rb Normal file
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class AddCreatedAtIndexToPosts < ActiveRecord::Migration
def up
execute "CREATE INDEX idx_posts_created_at_topic_id ON posts(created_at, topic_id) WHERE deleted_at IS NULL"
add_column :categories, :topics_day, :integer, default: 0
add_column :categories, :posts_day, :integer, default: 0
execute "DROP INDEX index_topics_on_deleted_at_and_visible_and_archetype_and_id"
add_index :topics, [:deleted_at, :visible, :archetype, :category_id, :id], name: "idx_topics_front_page"
end
def down
execute "DROP INDEX idx_topics_front_page"
add_index :topics, [:deleted_at, :visible, :archetype, :id]
remove_column :categories, :posts_day
remove_column :categories, :topics_day
execute "DROP INDEX idx_posts_created_at_topic_id"
end
end