A system can register a first client and a second client to respectively receive information about updates to a write-ahead log structured storage engine that comprises a log. The system can read an entry in the log, the entry being of an update type. The system can, in response to determining that the first client is registered to receive at least some of the information about updates that are of the update type, sending, to the first client, entry information about the entry. The system can, in response to determining that the second client is registered to receive information about updates that are of the update type, sending, to the second client, the entry information about the entry.