Clement Amarnath questions

Clement Amarnath answers

• how to find both the conditions using $or operator in mongodb
• MongoDB update Query in a loop
• mongodb sharding - chunks are not having the same size
• How to perform aggregation with MongoDB 3.0 java driver
• Mongoose findOne() vs limit(1)
• Set a field 'unique' ONLY within a user (mongoose)
• Why aggregate+sort is faster than find+sort in mongo?
• how to make primary key / _id optional to input in mongoose
• Adding custom header to WebView by adding headers to WebResourceRequest's headers in shouldInterceptRequest doesn't work
• Unable to Connect MongoDB on Amazon EC2 Instance using java