Zero-Downtime Data Refresh with CAS In-Memory Updates

[JohnCoutinho]

Have you ever wondered how SAS Viya dashboards continue to run smoothly even while data is being refreshed?

The answer lies in CAS (Cloud Analytic Services) and its powerful in-memory update mechanism — enabling near real-time data updates without locking users out.

What Happens Behind the Scenes?

Unlike traditional systems that lock tables during updates, CAS uses a non-disruptive refresh strategy:

Step-by-step

CAS in-memory data update process

 CAS eliminates downtime by creating a new in-memory version of data and switching it instantly — ensuring uninterrupted analytics.