Amazon Aurora serverless now supports up to 384 ACUs

Amazon Aurora serverless

Now supports database capacity of up to 384 Aurora Capacity Units (ACUs) for Aurora PostgreSQL-Compatible Edition, a 50% increase from the previous maximum of 256 ACUs. Each ACU provides approximately 2 gibibytes (GiB) of memory with corresponding CPU and networking, so a single Aurora serverless database can now scale up to 768 GiB of memory. When the workload completes, Aurora serverless automatically scales down to zero. This makes Aurora serverless especially well-suited for agentic AI applications, which typically have bursts of activity, long idle windows, and unpredictable traffic patterns. Aurora serverless handles all of it automatically, scaling capacity with your agents, so you only pay for what you use.

What to do

• For new clusters, select a supported Aurora PostgreSQL engine version and set your maximum capacity up to 384 ACUs.
• For existing clusters on Platform Version 4, modify the cluster to update the maximum capacity setting (and the engine version if needed).
• For existing clusters on older platform versions, upgrade to Platform Version 4 through a pending maintenance action.

384 ACU support is available for Aurora PostgreSQL versions 18.4, 17.10, 16.14, 15.18, and 14.23, running on Platform Version 4.

Source: AWS release notes

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