November 2017
Intermediate to advanced
342 pages
9h 9m
English
Content preview from Mastering MongoDB 3.x
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Backups
Lee Child once famously said:
"Hope for the best, plan for the worst."
This should be our approach when designing our backup strategy for MongoDB. There are several distinct failure events that can happen.
Backups should be the cornerstone of our disaster recovery strategy in case something happens. Some developers may rely on replication for disaster recovery as it seems that having three copies of our data is more than enough. In case one of the copies goes away, we can always rebuild the cluster from the other two copies.
This is indeed the case in the event of disks failing for example. Disk failure is one of the most common failures in a production cluster and will statistically happen once disks start reaching their MTBF (
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