How to store timestamps? Are created and updated fields available automatically?

Question

What's the best way to store timestamps in MongoDB?

1. Which format is best:

   # "created": { "d" : "2010-03-29", "t" : "20:15:34" } # "created": "12343545234" # seconds since epoc # "created": "2010-03-14T21:20:14+0000" 

2. Is there a way to have MongoDB automatically set created and updated fields?

Answer 1

Which format is best

Best for what?

Is there a way to have MongoDB automatically set created and updated fields?

Created time is in the ObjectId but, as far as I know, you will have to update a updated field manually.

Example:

ObjectId("538141a9615760fd04ffef5f").getTimestamp()