Thursday, March 6, 2014

10 Things You Should Know About Running MongoDB At Scale

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This post outlines ten things you need to know for operating MongoDB at scale based on my experience working with MongoDB customers and open source users:
  1. MongoDB requires DevOps, too.
  2. Successful MongoDB users monitor everything and prepare for growth.
  3. The obstacles to scaling performance as your usage grows may not be what you'd expect.
  4. Lots of MongoDB users succeed with a single replica set.
  5. You can get great performance out of MongoDB, even if your entire database doesn't fit in RAM.
  6. Data written has to be flushed to disk.
  7. Replication != Backups.
  8. Replica set health is more than replication lag.
  9. MongoDB doesn't know how secure your data needs to be.
  10. There is no need to tinker under the hood.
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