13. The system of claim 11 , wherein the at least one hardware processor also writes the first object to an in-memory, non-relational data store as an uncompressed object before the first object is compressed, and overwrites the uncompressed object with a compressed form of the first object when the first object is compressed.
13. The system of claim 11 , wherein the at least one hardware processor also writes the first object to an in-memory, non-relational data store as an uncompressed object before the first object is compressed, and overwrites the uncompressed object with a compressed form of the first object when the first object is compressed. 14. The system of claim 13 , wherein the at least one hardware processor also determines when multiple uncompressed versions of an object have been written to the in-memory, non-relational data store before the compressed form of a first of the versions has been formed, and prevents the compressed form from overwriting a subsequent version of the object written to the in-memory, non-relational data store.