Add entity cache (#7271)

* Add entity cache

Use a caching layer for mentions and custom emojis that are
dynamically extracted from text.

Reduce duplicate text extractions

* Fix code style issue
This commit is contained in:
Eugen Rochko 2018-04-27 01:38:10 +02:00 committed by GitHub
parent 63553c6b5c
commit a872392cd9
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5 changed files with 48 additions and 10 deletions

34
app/lib/entity_cache.rb Normal file
View file

@ -0,0 +1,34 @@
# frozen_string_literal: true
require 'singleton'
class EntityCache
include Singleton
MAX_EXPIRATION = 7.days.freeze
def mention(username, domain)
Rails.cache.fetch(to_key(:mention, username, domain), expires_in: MAX_EXPIRATION) { Account.select(:username, :domain, :url).find_remote(username, domain) }
end
def emoji(shortcodes, domain)
shortcodes = [shortcodes] unless shortcodes.is_a?(Array)
cached = Rails.cache.read_multi(*shortcodes.map { |shortcode| to_key(:emoji, shortcode, domain) })
uncached_ids = []
shortcodes.each do |shortcode|
uncached_ids << shortcode unless cached.key?(to_key(:emoji, shortcode, domain))
end
unless uncached_ids.empty?
uncached = CustomEmoji.where(shortcode: shortcodes, domain: domain, disabled: false).select(:shortcode, :id, :image_file_name, :visible_in_picker).map { |item| [item.shortcode, item] }.to_h
uncached.each_value { |item| Rails.cache.write(to_key(:emoji, item.shortcode, domain), item, expires_in: MAX_EXPIRATION) }
end
shortcodes.map { |shortcode| cached[to_key(:emoji, shortcode, domain)] || uncached[shortcode] }.compact
end
def to_key(type, *ids)
"#{type}:#{ids.compact.map(&:downcase).join(':')}"
end
end

View file

@ -52,12 +52,8 @@ class Formatter
end
def simplified_format(account, **options)
html = if account.local?
linkify(account.note)
else
reformat(account.note)
end
html = encode_custom_emojis(html, CustomEmoji.from_text(account.note, account.domain)) if options[:custom_emojify]
html = account.local? ? linkify(account.note) : reformat(account.note)
html = encode_custom_emojis(html, account.emojis) if options[:custom_emojify]
html.html_safe # rubocop:disable Rails/OutputSafety
end
@ -211,7 +207,7 @@ class Formatter
username, domain = acct.split('@')
domain = nil if TagManager.instance.local_domain?(domain)
account = Account.find_remote(username, domain)
account = EntityCache.instance.mention(username, domain)
account ? mention_html(account) : "@#{acct}"
end

View file

@ -391,7 +391,7 @@ class Account < ApplicationRecord
end
def emojis
CustomEmoji.from_text(note, domain)
@emojis ||= CustomEmoji.from_text(note, domain)
end
before_create :generate_keys

View file

@ -42,6 +42,8 @@ class CustomEmoji < ApplicationRecord
include Attachmentable
after_commit :remove_entity_cache
def local?
domain.nil?
end
@ -58,11 +60,17 @@ class CustomEmoji < ApplicationRecord
return [] if shortcodes.empty?
where(shortcode: shortcodes, domain: domain, disabled: false)
EntityCache.instance.emoji(shortcodes, domain)
end
def search(shortcode)
where('"custom_emojis"."shortcode" ILIKE ?', "%#{shortcode}%")
end
end
private
def remove_entity_cache
Rails.cache.delete(EntityCache.instance.to_key(:emoji, shortcode, domain))
end
end

View file

@ -160,7 +160,7 @@ class Status < ApplicationRecord
end
def emojis
CustomEmoji.from_text([spoiler_text, text].join(' '), account.domain)
@emojis ||= CustomEmoji.from_text([spoiler_text, text].join(' '), account.domain)
end
after_create_commit :store_uri, if: :local?