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Status Not under consideration
Workspace Informix
Components Informix Server
Created by Guest
Created on Mar 7, 2023

Speed control for 'cdr sync'

'cdr sync' is a very fast and efficient way of creating a copy of a table when used with loopback replication. The problem is that it can be too quick and can create logical logs at a rate that can overwhelm replication and log backups.

The idea is to have some kind of brake that would be in operation when either the number of logical logs not backed up or the number of logs not shipped to a HDR or RSS server exceeds a threshold. We anticipate this threshold would be quite low and designed to avoid any significant lag. The brake would stop 'cdr sync' from generating new log records until replication and log backups catch up. It is quite possible that the brake would be applied and released many times during a sync.

Use of the brake would be optional (possibly a new onconfig parameter).

Needed By Quarter
  • Guest
    Reply
    |
    May 5, 2023

    Is this meant for 'cdr sync' target, or rather source or both?

    I'd assume not too many log records should be created on source side?