Motivation

We could help miners collect higher fees, shorten the wait-time for transactions to be mined, and make Zebra more efficient by returning from long polling immediately when the mempool changes.

Possible Designs

• Add a channel from the transaction verifier to the RPC server
• Send a message to the RPC server when mempool transactions are verified
• Debounce those messages
• Fetch mempool transactions when new transactions are verified instead of at a fixed interval

Possible Alternatives

We could instead check the mempool more frequently or at a configurable interval.