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Aurora DSQL: Scalable, Multi-Region OLTP
Amazon's Aurora DSQL brings multi-region, active-active OLTP transactions to PostgreSQL without requiring manual sharding or replica management.
What: Aurora DSQL provides a distributed, strongly consistent database that handles cross-region latency at commit. It is compatible with standard PostgreSQL clients but currently limits transactions to 10 MiB or 3,000 rows.
Why it matters: This pushes cloud-native databases toward a 'serverless-everything' model, where the burden of scaling and data placement shifts entirely from the developer to the infrastructure provider.
Takeaway: If you need a distributed database, ensure your transactions are short and do not rely on enforced foreign keys, as those are not supported in the current version.
Decoder
- OLTP (Online Transactional Processing): Databases optimized for high-volume, short, and atomic read/write operations.
- Active-Active: A configuration where multiple nodes or regions can accept read/write requests simultaneously, providing high availability.
Original article
Aurora DSQL provides PostgreSQL-compatible, strongly consistent, active-active multi-region OLTP without managing servers, shards, replicas, or failover, with cross-region latency mostly paid at commit. Teams still need short transactions and must work around current limits such as 3,000 rows or 10 MiB per transaction and no enforced foreign keys.
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