#documentdb

The main challenge in document database indexing is the flexibility of fields: the same path can be a...

The DocumentDB extension, providing MongoDB compatibility for PostgreSQL, is available in preview in...

In a previous post, I explored how MongoDB chooses between nested loop, indexed loop, and hash join...

Before looking at PostgreSQL, I'll first introduce the problem by showing how MongoDB's document...

In SQL databases, NULL represents an unknown value — not the absence of a value. When a value is...

In my last post, we dug into the deep internal trade-offs of running JSON workloads on PostgreSQL vs....

In September 2025, AWS announced it will contribute to the open-source DocumentDB extension for...

MongoDB is the leading database for document data modeling, with its Atlas service available on AWS,...

In previous posts, I discussed the limitations of MongoDB emulations on databases like Oracle and...

My next post will be about Amazon DocumentDB and how it compares to MongoDB in terms of indexing a...

Understanding the Load Balancing Issue In a typical Amazon DocumentDB cluster, there is a primary...

Amazon DocumentDBは使っていますか？ Amazon...