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changestreams

Demo for Orange County MUG Dec-5-2017 Demo

Steps:

  1. Setup a MongoDB 3.6 replica set
  2. Build using mvn package
  3. Run using java -jar ./bin/changestreams.jar --host MONGODB_CONNECTION_STRING
  4. Install mgeneratejs
  5. Generate data simultaneously using the V1 and V2 Device Event templates:
    mgeneratejs -n 50000 36_DeviceEventsV1.json | ./mongoimport -d IoT -c DeviceEvents -j 2
    mgeneratejs -n 50000 36_DeviceEventsV2.json | ./mongoimport -d IoT -c DeviceEvents -j 2
  6. As data is commited to the replica set, the change streams java program will print out events to the console
  7. After completion, browse the IoT database and the DeviceEvents and Devices collections using MongoDB Compass.
  8. The Devices collection will contain only 1 entry per Device with variations in the json schema