Tuple Space

realtime database of tuples which can be accessed concurrently
tuples can be "alive" (providing computation)
is a form of distributed shared memory
look at Dynamicland & Realtalk for radical implementation
references:
- Linda In Context
  
  The model is based on generative communication. If two processes need to communicate, they don't exchange messages or share a variable; instead the data producing process generates a new data object (called a tuple) and sets it adrift in a region called tuple space.
  — Linda in Context - Nicholas Carriero, David Gelernter
- Blackboard Systems