woop/core/tx_pool.md

TxPool design

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Functionalities

1. Being a storage of coming transactions
2. Managing all tx policies/filters (see below)
3. Handling logic of accepting new txs and generating a new block of tx

Policies

PriceLimit

This policy is to ensure that minimum gas price of a coming transaction should be enforced for acceptance into the pool.

PriceBump

This policy is to accept a later transaction from the sender with the same nonce of an accepted transaction and drop that accepted transaction if the gas price of later transaction is (100+PriceBump)% more than the gas price of the accepted transaction.

AccountSlots

This policy is to limit the number of executable transactions slots per account.

GlobalSlots

This policy is to limit the number of executable transactions slots of all accounts.

AccountQueue

This policy is to limit the number of non-executable transactions slots per account. The non-executable transactions are stored in a queue data structure. See later.

GlobalQueue

This policy is to limit the number of non-executable transactions slots of all accounts. The non-executable transactions are stored in a queue data structure. See later.

Lifetime

This policy is to limit the amount of time non-executable transactions are queued.

DropOldTx

This policy is to drop all transactions that are deemed too old

DropLowBalance

This policy is to drop all transactions that are too costly (low balance or out of gas)

Data Structure

Coming up later.