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Change hashtag trends to be stored in the database instead of redis (#32837)

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Co-authored-by: David Roetzel <david@roetzel.de>
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Eugen Rochko 2024-12-04 12:59:17 +01:00 • committed by GitHub
parent b9b26490e7
commit 48ea7552dd
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18 changed files with 195 additions and 157 deletions
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47
app/models/trends/base.rb
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@ -34,19 +34,7 @@ class Trends::Base
end
def query
Trends::Query.new(key_prefix, klass)
end
def score(id, locale: nil)
redis.zscore([key_prefix, 'all', locale].compact.join(':'), id) || 0
end
def rank(id, locale: nil)
redis.zrevrank([key_prefix, 'allowed', locale].compact.join(':'), id)
end
def currently_trending_ids(allowed, limit)
redis.zrevrange(allowed ? "#{key_prefix}:allowed" : "#{key_prefix}:all", 0, limit.positive? ? limit - 1 : limit).map(&:to_i)
Trends::Query.new(klass)
end
protected
@ -64,42 +52,9 @@ class Trends::Base
redis.expire(used_key(at_time), 1.day.seconds)
end
def score_at_rank(rank)
redis.zrevrange("#{key_prefix}:allowed", 0, rank, with_scores: true).last&.last || 0
end
def replace_items(suffix, items)
tmp_prefix = "#{key_prefix}:tmp:#{SecureRandom.alphanumeric(6)}#{suffix}"
allowed_items = filter_for_allowed_items(items)
redis.pipelined do |pipeline|
items.each { |item| pipeline.zadd("#{tmp_prefix}:all", item[:score], item[:item].id) }
allowed_items.each { |item| pipeline.zadd("#{tmp_prefix}:allowed", item[:score], item[:item].id) }
rename_set(pipeline, "#{tmp_prefix}:all", "#{key_prefix}:all#{suffix}", items)
rename_set(pipeline, "#{tmp_prefix}:allowed", "#{key_prefix}:allowed#{suffix}", allowed_items)
end
end
def filter_for_allowed_items(items)
raise NotImplementedError
end
private
def used_key(at_time)
"#{key_prefix}:used:#{at_time.beginning_of_day.to_i}"
end
def rename_set(pipeline, from_key, to_key, set_items)
if set_items.empty?
pipeline.del(to_key)
else
pipeline.rename(from_key, to_key)
end
end
def skip_review?
Setting.trendable_by_default
end
end