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Add `account_id DESC` to optimize PrecomputeFeedService (#2967)

rebase/4.0.0rc2
alpaca-tc 2017-05-11 03:33:32 +09:00 committed by Eugen Rochko
parent 57a3d71c90
commit c3ef5d5414
1 changed files with 2 additions and 1 deletions
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3
app/services/precompute_feed_service.rb
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@ -6,7 +6,8 @@ class PrecomputeFeedService < BaseService
# @param [Account] account
def call(_, account)
redis.pipelined do
Status.as_home_timeline(account).limit(FeedManager::MAX_ITEMS / 4).each do |status|
# NOTE: Added `id desc, account_id desc` to `ORDER BY` section to optimize query.
Status.as_home_timeline(account).order(account_id: :desc).limit(FeedManager::MAX_ITEMS / 4).each do |status|
next if status.direct_visibility? || FeedManager.instance.filter?(:home, status, account.id)
redis.zadd(FeedManager.instance.key(:home, account.id), status.id, status.reblog? ? status.reblog_of_id : status.id)
end