We found mongo expensive for documents. We had simple documents basically saying X sent email Y to Z. The mongo db was cloud hosted and was over 500gb and costi

We found mongo expensive for documents. We had simple documents basically saying X sent email Y to Z. The mongo db was cloud hosted and was over 500gb and costing nearly 3k. Moved them into S3 with a simple SQL dB to look up reference IDs. Certainly reduced the cost!