This pattern gets its name from "tuple space", which means “distributed shared memory". There is no database or synchronous database access, and thus no database bottleneck. All the processing units share the replicated application data in memory. These processing units can be started up and shut down elastically.

Eg.JavaSpaces

https://learning.oreilly.com/library/view/software-architecture-patterns/9781491971437/ch05.html#idm46407727427792