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I am not sure if this is really an apple to apple comparison because from the article it seems that the data schema in Cassandra was carefully designed while it

I am not sure if this is really an apple to apple comparison because from the article it seems that the data schema in Cassandra was carefully designed while it's not obvious whether it's the case for the MongoDB one("it was supposed to be a temporary one"). MongoDB has many many limitations. Data schemas have to be carefully designed taking them into consideration, otherwise they are going to have a huge impact to the performance.

nemothekid 13y ago
When it comes to timeseries data, there aren't a lot of ways to design your schema. In my experience when working with a write heavy load such as timeseries data, you are always fighting the writelock with MongoDB. AFAIK, there isn't much you can do about your schema to combat this.