9805fe1914
This allows 'rake cache:clear' to delete millions of keys without choking. It requires Redis 2.8.0 or newer but we needed that already anyway.
22 lines
596 B
Ruby
22 lines
596 B
Ruby
namespace :cache do
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CLEAR_BATCH_SIZE = 1000
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REDIS_SCAN_START_STOP = '0' # Magic value, see http://redis.io/commands/scan
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desc "GitLab | Clear redis cache"
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task :clear => :environment do
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redis_store = Rails.cache.instance_variable_get(:@data)
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cursor = [REDIS_SCAN_START_STOP, []]
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loop do
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cursor = redis_store.scan(
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cursor.first,
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match: "#{Gitlab::REDIS_CACHE_NAMESPACE}*",
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count: CLEAR_BATCH_SIZE
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)
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keys = cursor.last
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redis_store.del(*keys) if keys.any?
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break if cursor.first == REDIS_SCAN_START_STOP
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end
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end
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end
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