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