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namespace :cache do
namespace :clear do
REDIS_CLEAR_BATCH_SIZE = 1000 # There seems to be no speedup when pushing beyond 1,000
REDIS_SCAN_START_STOP = '0'.freeze # Magic value, see http://redis.io/commands/scan
desc "GitLab | Clear redis cache"
task redis: :environment do
Gitlab::Redis.with do |redis|
cursor = REDIS_SCAN_START_STOP
loop do
cursor, keys = redis.scan(
cursor,
match: "#{Gitlab::Redis::CACHE_NAMESPACE}*",
count: REDIS_CLEAR_BATCH_SIZE
)
redis.del(*keys) if keys.any?
break if cursor == REDIS_SCAN_START_STOP
end
end
end
task all: [:redis]
end
task clear: 'cache:clear:redis'
end
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