In from_redis method, statuses retrieved from the database was mapped to the IDs retrieved from Redis. It was equivalent to order from high to low because those IDs are sorted in the same order. Statuses are ordered with the ID by default, so we do not have to reorder. Sorting statuses in the database is even faster since the IDs are indexed with B-tree.
		
			
				
	
	
		
			22 lines
		
	
	
		
			717 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			22 lines
		
	
	
		
			717 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
| require 'rails_helper'
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| 
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| RSpec.describe Feed, type: :model do
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|   describe '#get' do
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|     it 'gets statuses with ids in the range' do
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|       account = Fabricate(:account)
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|       Fabricate(:status, account: account, id: 1)
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|       Fabricate(:status, account: account, id: 2)
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|       Fabricate(:status, account: account, id: 3)
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|       Fabricate(:status, account: account, id: 10)
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|       Redis.current.zadd(FeedManager.instance.key(:home, account.id),
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|                         [[4, 'deleted'], [3, 'val3'], [2, 'val2'], [1, 'val1']])
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| 
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|       feed = Feed.new(:home, account)
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|       results = feed.get(3)
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| 
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|       expect(results.map(&:id)).to eq [3, 2]
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|       expect(results.first.attributes.keys).to eq %w(id updated_at)
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|     end
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|   end
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| end
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