gitlab-org--gitlab-foss/lib/tasks/cache.rake
Nick Thomas e94cd6fdfe Add markdown cache columns to the database, but don't use them yet
This commit adds a number of _html columns and, with the exception of Note,
starts updating them whenever the content of their partner fields changes.

Note has a collision with the note_html attr_accessor; that will be fixed later

A background worker for clearing these cache columns is also introduced - use
`rake cache:clear` to set it off. You can clear the database or Redis caches
separately by running `rake cache:clear:db` or `rake cache:clear:redis`,
respectively.
2016-10-07 02:54:25 +01:00

33 lines
883 B
Ruby

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' # 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
desc "GitLab | Clear database cache (in the background)"
task db: :environment do
ClearDatabaseCacheWorker.perform_async
end
task all: [:db, :redis]
end
task clear: 'cache:clear:all'
end