6. Why MongoDB
Agile friendly
Document oriented
Transactions not needed
No specialist DBAs(couldn't afford one)
Devs not very good with traditional sql anyway
7. What do I think about MongoDB
Mysql beats MongoDB hands down in terms of
features
Its the best NoSql out there in terms of
usability + features
Its essentially a key value store with features
in drivers instead of the DB itself
This allows for easy app scaling
8. Strength of MongoDB is the mapper
Sadly RoR(ActiveRecord) guys seem to a well
about it
11. Devs had to handle reporting
Map Reduce...painful...I have it...love the sql
Like the comfort of application layer
Mongo – Key, Value store
Driver did the rest at app layer
RealTime reporting
Reporting no longer a disjoint
15. User Aggregate
Per Day
UserId
Date
Total Session Duration
Average Session
Total Session
Per Week...
Per Month...
16. How
Data Updates are atomic
One query (schema less)
REST based reporting
Jquery plugins / HTML5 for display
Reports felt more responsive and lighter
Smaller front end code base allowed for faster
iterations
17. Scenario
1000s of writes per minute
Lasts for a few hours a day
RealTime monitoring of the processing