Transaction History Log (THL) files are the core of Tungsten Replication, containing the actual MySQL write events that are replicated to the replicas. These files can take up considerable amounts of disk space, making them of interest for housekeeping operations to limit the consumption and ultimately, the cost. This blog post will walk you through THL management, along with the new command `tpm purge-thl` which helps automate the process when THL needs to be removed prior to the automatic rotation window.
So we’ve established how important backups are, RTO, RPO, and how you can be a hero by having backups that align with business objectives. We just need to pick a good backup tool(s) to take backups of your MySQL database. Databases evolve, grow, and business needs change. That’s why it is important to constantly reevaluate your backup strategy, because what worked last year may not be appropriate this year in terms of RPO/RTO, retention, or costs.
