abstraction-cas is an Apache-2.0 package that implements compare-and-set operations over files. It is intended for developers building services that need coordinated updates to file-backed state.
In the Databases (SQL, NoSQL, vector, graph) space, abstraction-cas takes a focused approach. It focuses on preventing conflicting updates when services share state stored in files. It is built as an open-source project for developers building file-backed stateful services. abstraction-cas is open source under the Apache-2.0 license. It runs on the command line, and it can be self-hosted.
Open Abstractions builds and maintains abstraction-cas, and it first shipped in 2026. Development happens publicly on GitHub with 10 commits in the last 90 days. Key capabilities include compare-and-set, file state storage, and concurrency control.
Summary written by a language model from the project’s public pages.
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