MongoDB - Capturing Dropped Objects From A Capped Collection?

As per the MongoDB developers, you can't do this: groups.google.com/group/mongodb-user/bro... What I am interested in doing is implementing a series of rollup collections As alex said, one way to solve this is to use MapReduce. Another way is to have a different collection e.g. Per day, for example logs20110414 and have your application manage read/writes to the appropriate collection.

As per the MongoDB developers, you can't do this: groups.google.com/group/mongodb-user/bro... What I am interested in doing is implementing a series of rollup collections. As alex said, one way to solve this is to use MapReduce. Another way is to have a different collection e.g. Per day, for example logs20110414 and have your application manage read/writes to the appropriate collection.

You would have to implement that functionality in code rather than in MongoDB. I don't think Capped Collections are the right solution for your use-case. You could insert into a capped collection, and at the same time insert into a "normal" collection, and aggregate them into hourly / daily, weekly, monthly etc... using map reduce.

Thanks for your responses. Too bad it is not supported. Capped Collections have 2 features I really need which are the circular storage and the tailable cursors.

– Nicholas Apr 14 at 15:42.

As per the MongoDB developers, you can't do this.

You would have to implement that functionality in code rather than in MongoDB.

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