144 lines
4.5 KiB
Ruby
144 lines
4.5 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Gitlab::Patch::RedisCacheStore, :use_clean_rails_redis_caching, feature_category: :scalability do
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let(:cache) { Rails.cache }
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before do
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cache.write('x', 1)
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cache.write('y', 2)
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cache.write('z', 3)
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cache.write('{user1}:x', 1)
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cache.write('{user1}:y', 2)
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cache.write('{user1}:z', 3)
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cache.instance_variable_set(:@pipeline_batch_size, nil)
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end
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describe '#read_multi_mget' do
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shared_examples 'reading using cache stores' do
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it 'gets multiple cross-slot keys' do
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expect(
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Gitlab::Instrumentation::RedisClusterValidator.allow_cross_slot_commands do
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# fetch_multi requires a block and we have to specifically test it
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# as it is used in the Gitlab project
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cache.fetch_multi('x', 'y', 'z') { |key| key }
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end
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).to eq({ 'x' => 1, 'y' => 2, 'z' => 3 })
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end
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it 'gets multiple keys' do
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expect(
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cache.fetch_multi('{user1}:x', '{user1}:y', '{user1}:z') { |key| key }
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).to eq({ '{user1}:x' => 1, '{user1}:y' => 2, '{user1}:z' => 3 })
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end
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context 'when reading large amount of keys' do
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let(:input_size) { 2100 }
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let(:chunk_size) { 1000 }
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shared_examples 'read large amount of keys' do
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it 'breaks the input into 2 chunks for redis cluster' do
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cache.redis.with do |redis|
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normal_cluster = !redis.is_a?(Gitlab::Redis::MultiStore) && Gitlab::Redis::ClusterUtil.cluster?(redis)
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multistore_cluster = redis.is_a?(Gitlab::Redis::MultiStore) &&
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::Gitlab::Redis::ClusterUtil.cluster?(redis.default_store)
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if normal_cluster || multistore_cluster
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times = (input_size.to_f / chunk_size).ceil
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expect(redis).to receive(:mget).exactly(times).times.and_call_original
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else
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expect(redis).to receive(:mget).and_call_original
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end
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end
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Gitlab::Instrumentation::RedisClusterValidator.allow_cross_slot_commands do
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cache.read_multi(*Array.new(input_size) { |i| i })
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end
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end
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end
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it_behaves_like 'read large amount of keys'
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end
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end
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context 'when cache is Rails.cache' do
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let(:cache) { Rails.cache }
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it_behaves_like 'reading using cache stores'
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end
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context 'when cache is feature flag cache store' do
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let(:cache) { Gitlab::Redis::FeatureFlag.cache_store }
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it_behaves_like 'reading using cache stores'
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end
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context 'when cache is repository cache store' do
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let(:cache) { Gitlab::Redis::RepositoryCache.cache_store }
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it_behaves_like 'reading using cache stores'
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end
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end
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describe '#delete_multi_entries' do
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shared_examples 'deleting using cache stores' do
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it 'deletes multiple cross-slot keys' do
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expect(Gitlab::Instrumentation::RedisClusterValidator.allow_cross_slot_commands do
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cache.delete_multi(%w[x y z])
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end).to eq(3)
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end
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it 'deletes multiple keys' do
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expect(
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cache.delete_multi(%w[{user1}:x {user1}:y {user1}:z])
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).to eq(3)
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end
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context 'when deleting large amount of keys' do
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before do
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2000.times { |i| cache.write(i, i) }
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end
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it 'calls pipeline multiple times' do
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cache.redis.with do |redis|
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# no expectation on number of times as it could vary depending on cluster size
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# if the Redis is a Redis Cluster
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if Gitlab::Redis::ClusterUtil.cluster?(redis)
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expect(redis).to receive(:del).at_least(2).and_call_original
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else
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expect(redis).to receive(:del).and_call_original
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end
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end
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expect(
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Gitlab::Instrumentation::RedisClusterValidator.allow_cross_slot_commands do
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cache.delete_multi(Array(0..1999))
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end
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).to eq(2000)
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end
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end
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end
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context 'when cache is Rails.cache' do
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let(:cache) { Rails.cache }
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it_behaves_like 'deleting using cache stores'
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end
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context 'when cache is feature flag cache store' do
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let(:cache) { Gitlab::Redis::FeatureFlag.cache_store }
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it_behaves_like 'deleting using cache stores'
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end
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context 'when cache is repository cache store' do
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let(:cache) { Gitlab::Redis::RepositoryCache.cache_store }
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it_behaves_like 'deleting using cache stores'
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end
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end
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end
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