Amazon Web Services

Is Amazon’s new MongoDB-compatible DBMS really PostgreSQL under the covers?  ↦

This is a nice rundown of the technical clues indicating that DocumentDB might be powered by Postgres.

PostgreSQL isn’t the only DBMS that scales writes vertically and reads horizontally via replication, but when you add this all up, especially some of the specific limitations, I think it makes a pretty compelling argument that PostgreSQL is the engine powering AWS DocumentDB.


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2019-01-22T16:26:27Z ago

Has anyone written up a comparison of the new AWS DocumentDB to Azure’s CosmosDB and even to the existing AWS DynamoDB? Things like cost, use-cases, etc.? Coincidentally, the new DocumentDB at face value sounds a whole lot like Azure’s CosmosDB, which was originally named DocumentDB!

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