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Implement includes caching for timelines APIs

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This commit is contained in:
Eugen Rochko 2016-11-23 08:34:35 +01:00
parent 5c78547198
commit cf912e01fd
3 changed files with 52 additions and 9 deletions
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23
app/controllers/api/v1/timelines_controller.rb
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@ -38,6 +38,7 @@ class Api::V1::TimelinesController < ApiController
def public
@statuses = Status.as_public_timeline(current_account).paginate_by_max_id(DEFAULT_STATUSES_LIMIT, params[:max_id], params[:since_id]).to_a
@statuses = cache(@statuses)
set_maps(@statuses)
set_counters_maps(@statuses)
@ -54,6 +55,7 @@ class Api::V1::TimelinesController < ApiController
def tag
@tag = Tag.find_by(name: params[:id].downcase)
@statuses = @tag.nil? ? [] : Status.as_tag_timeline(@tag, current_account).paginate_by_max_id(DEFAULT_STATUSES_LIMIT, params[:max_id], params[:since_id]).to_a
@statuses = cache(@statuses)
set_maps(@statuses)
set_counters_maps(@statuses)
@ -66,4 +68,25 @@ class Api::V1::TimelinesController < ApiController
render action: :index
end
private
def cache(raw)
uncached_ids = []
cached_keys_with_value = Rails.cache.read_multi(*raw.map(&:cache_key))
raw.each do |status|
uncached_ids << status.id unless cached_keys_with_value.key?(status.cache_key)
end
unless uncached_ids.empty?
uncached = Status.where(id: uncached_ids).with_includes.map { |s| [s.id, s] }.to_h
uncached.values.each do |status|
Rails.cache.write(status.cache_key, status)
end
end
raw.map { |status| cached_keys_with_value[status.cache_key] || uncached[status.id] }
end
end