Use streaming for storage API

[ecausarano]

Right now all network and storage handling of bundles is done by allocating and copying around byte arrays. It's an unacceptable design, eats gobs of memory and kills the program the very moment it's used beyond trivial tests.

Rewrite the storage API to used buffered RW so that network can RW using known size limited size buffers.

https://docs.oracle.com/cd/E17276_01/html/java/com/sleepycat/db/SecondaryMultiKeyCreator.html one could introduce a concurrent map indexed on the key, fetch the current the state of the processor update and save the results set.

Q is: when is it "done"? Does the runtime handle it when committing the transaction?