Parallel transaction processing design about hypercube HOT 2 OPEN

What I ended up implementing is to put separate read/write locks on each of the following:

• account balance
• the table of all balances
• each pending smart contract
• the table of pending smart contracts
• the set of previous transaction signatures

I also changed transaction processing to apply all debits first, and once complete, start applying all credits. This ensures that the same set can be validated in any order and that no debit will pull the account below zero. The strategy therefore rejects transactions that would otherwise be valid if a credit was applied first.

from hypercube.

Some take away followups

from hypercube.