Slack notification has delayed

I am being used on-premise sentry by linking slack.

If there are many issues in a short time, the notification delivered to slack is delayed.
It occurs even if the server’s resources are scaled out.

Do you have any ideas?

This is my configuration.

<sentry.conf.py>
SENTRY_USE_BIG_INTS = True
SENTRY_SINGLE_ORGANIZATION = True
DEBUG = False
SENTRY_CACHE = ‘sentry.cache.redis.RedisCache’
BROKER_URL = ‘redis://my-redis-url:63795’
SENTRY_RATELIMITER = ‘sentry.ratelimits.redis.RedisRateLimiter’
SENTRY_BUFFER = ‘sentry.buffer.redis.RedisBuffer’
SENTRY_QUOTAS = ‘sentry.quotas.redis.RedisQuota’
SENTRY_TSDB = ‘sentry.tsdb.redis.RedisTSDB’
SENTRY_DIGESTS = ‘sentry.digests.backends.redis.RedisBackend’

<sentry.yml>
redis.clusters:
default:
hosts:
0:
host: my-redis-url
port: 63795

This means your Sentry instance cannot consume the queues as fast as the events coming in, so they queue up. This topic may help you fine-tune your instance: How to clear backlog and monitor it - #15 by amit1