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afb5ec811d
This can cause unbound CPU usage in some cases, and excessive logging in other cases. This commit moves redis readonly information into the local process, but maintains the DistributedCache for postgres readonly state.
37 lines
1.0 KiB
Ruby
37 lines
1.0 KiB
Ruby
# frozen_string_literal: true
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require 'rails_helper'
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describe RandomTopicSelector do
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it 'can correctly use cache' do
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key = RandomTopicSelector.cache_key
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$redis.del key
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4.times do |t|
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$redis.rpush key, t
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end
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expect(RandomTopicSelector.next(0)).to eq([])
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expect(RandomTopicSelector.next(2)).to eq([0, 1])
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$redis.expects(:multi).returns(Discourse.received_redis_readonly!)
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expect(RandomTopicSelector.next(2)).to eq([2, 3])
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$redis.unstub(:multi)
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expect(RandomTopicSelector.next(2)).to eq([2, 3])
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expect(RandomTopicSelector.next(2)).to eq([])
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end
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it 'can correctly backfill' do
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category = Fabricate(:category, sort_order: 'op_likes')
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t1 = Fabricate(:topic, category_id: category.id)
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_t2 = Fabricate(:topic, category_id: category.id, visible: false)
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_t3 = Fabricate(:topic, category_id: category.id, deleted_at: 1.minute.ago)
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t4 = Fabricate(:topic, category_id: category.id)
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expect(RandomTopicSelector.next(5, category).sort).to eq([t1.id, t4.id].sort)
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end
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end
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