2 documented AWS DocumentDB cost inefficiencies, each with how to detect it and how to fix it.
AWS DocumentDBCER-0375
Amazon DocumentDB instance-based clusters bill every instance for each second it runs, whether or not any client is connected, and storage, I/O and backup storage are billed on top. Clusters created to evaluate DocumentDB, to rehearse a...
AWS DocumentDBCER-0376
Starting with Amazon DocumentDB 5.0, instance-based clusters can use one of two storage configurations. Standard storage bills I/O on a pay-per-request basis on top of instance and storage charges, while I/O-optimized storage removes I/O...