MongoDB Notes

Overview

This document provides helpful links and information about MongoDB.

Links

General information

• Data modeling manual
• MongoDB schema design best practices
• Schema design anti patterns
• FAQ concurrency

Quick reference

• Query and projection operators
• Expression operators

Replica set and clustering

• Replica set elections
• Replica set write concern
• Replica set read concern

Courses

MongoDB University has some great free watch on-demand courses, if you’re interested:

• M320: Data Modeling
• M121: MongoDB Aggregation Framework

Profiling

• explain
• db.setProfilingLevel

Transactions

• In-progress Transactions and Write Conflicts

Production notes

• Recommended file systems
• Recommended ulimit settings
• Back Up and Restore with MongoDB Tools
• Allocate Sufficient RAM and CPU
• Authentication

Also, it’s desirable that the network connectivity from kytosd to MongoDB should be as reliable and as low latency as possible.