Aug 25, 2016

BBN Lisp and its successor Interlisp, popular in the 1960s and 70s, had a persistent data store that was more closely integrated with the running Lisp image than typical general-purpose file systems (slide 41 in [1])

The proposed (but apparently un-implemented) LispOS [2] was to have a single-level store where objects in the running Lisp image would be transparently checkpointed to disk, with no conventional file system.

[1] http://www.international-lisp-conference.org/2005/media/bake...

[2] https://github.com/robert-strandh/LispOS/blob/master/Documen..., also chap-checkpointing.tex