This session introduces the basic components of high availability before going into a deep dive on MongoDB replication. We’ll explore some of the advanced capabilities with MongoDB replication and best practices to ensure data durability and redundancy. We’ll also look at various deployment scenarios and disaster recovery configurations.
Replication, Durability, and Disaster Recovery
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One of the most common concerns people have is how to ensure that their application is safe, secure and available in the event of an emergency. Often I have found that people are mistakenly believe that they are protected when in fact they often have ignored potential scenarios.
The principles explained apply equally well in RDBMSs, MongoDB and other databases.
Potential scenarios to protect against Drive failure Machine failure Switch failure Power circuit failure Data center failure Intrusion Fat fingers Programmer error Raid To prevent drive failure use multiple drives in a single machine for high availability.