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
Gitlab::Redis.with do |redis|
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
end