Screenshot of a chart which displays number of cached messages (grouped per hour). The date range can be changed. The idea is to detect holes by automatically analysing those values.
https://storage.gra.cloud.ovh.net/v1/AUTH_91eb37814936490c95da7b85993cc2ff/tootfedilabapp/media_attachments/files/109/966/475/825/920/160/original/573200a6f71ae4c4.jpg