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Revert support from loading Home timeline from database

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Unfortunately, the database query could turn out very inefficient and I did not
manage to find a way to improve that. Furthermore, there were still behavior
inconsistencies between fetching the timeline from Redis and fetching it from
Postgres.
This commit is contained in:
Claire
2022-04-19 14:54:43 +02:00
parent ec4a8d81b1
commit 5c808ee0de
2 changed files with 13 additions and 111 deletions
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76
spec/models/home_feed_spec.rb
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@@ -1,72 +1,32 @@
require 'rails_helper'
RSpec.describe HomeFeed, type: :model do
let(:account) { Fabricate(:account) }
let(:followed) { Fabricate(:account) }
let(:other) { Fabricate(:account) }
let(:account) { Fabricate(:account) }
subject { described_class.new(account) }
describe '#get' do
before do
account.follow!(followed)
Fabricate(:status, account: account, id: 1)
Fabricate(:status, account: account, id: 2)
status = Fabricate(:status, account: followed, id: 3)
Fabricate(:mention, account: account, status: status)
Fabricate(:status, account: account, id: 10)
Fabricate(:status, account: other, id: 11)
Fabricate(:status, account: followed, id: 12, visibility: :private)
Fabricate(:status, account: followed, id: 13, visibility: :direct)
Fabricate(:status, account: account, id: 1)
Fabricate(:status, account: account, id: 2)
Fabricate(:status, account: account, id: 3)
Fabricate(:status, account: account, id: 10)
end
context 'when feed is generated' do
before do
FeedManager.instance.populate_home(account)
Redis.current.zadd(
FeedManager.instance.key(:home, account.id),
[[4, 4], [3, 3], [2, 2], [1, 1]]
)
end
it 'gets statuses with ids in the range from redis with database' do
it 'gets statuses with ids in the range from redis' do
results = subject.get(3)
expect(results.map(&:id)).to eq [12, 10, 3]
expect(results.map(&:id)).to eq [3, 2]
expect(results.first.attributes.keys).to eq %w(id updated_at)
end
it 'with since_id present' do
results = subject.get(3, nil, 3, nil)
expect(results.map(&:id)).to eq [12, 10]
end
it 'with min_id present' do
results = subject.get(3, nil, nil, 0)
expect(results.map(&:id)).to eq [3, 2, 1]
end
end
context 'when feed is only partial' do
before do
FeedManager.instance.populate_home(account)
Redis.current.zremrangebyrank(FeedManager.instance.key(:home, account.id), 0, -2)
end
it 'gets statuses with ids in the range from redis with database' do
results = subject.get(3)
expect(results.map(&:id)).to eq [12, 10, 3]
expect(results.first.attributes.keys).to eq %w(id updated_at)
end
it 'with since_id present' do
results = subject.get(3, nil, 3, nil)
expect(results.map(&:id)).to eq [12, 10]
end
it 'with min_id present' do
results = subject.get(3, nil, nil, 0)
expect(results.map(&:id)).to eq [3, 2, 1]
end
end
context 'when feed is being generated' do
@@ -74,20 +34,10 @@ RSpec.describe HomeFeed, type: :model do
Redis.current.set("account:#{account.id}:regeneration", true)
end
it 'returns from database' do
it 'returns nothing' do
results = subject.get(3)
expect(results.map(&:id)).to eq [12, 10, 3]
end
it 'with since_id present' do
results = subject.get(3, nil, 3, nil)
expect(results.map(&:id)).to eq [12, 10]
end
it 'with min_id present' do
results = subject.get(3, nil, nil, 0)
expect(results.map(&:id)).to eq [3, 2, 1]
expect(results.map(&:id)).to eq []
end
end
end