electrs/TODO.md

Electrum

• Poll mempool after transaction broadcast
• Support TLS (via https://docs.rs/rustls/)
• Snapshot DB after successful indexing - and run queries on the latest snapshot
• Update height to -1 for txns with any unconfirmed input
• Limit mempool TXs (e.g. by fee rate) when mempool is large

Bitcoind

• Stream blocks (instead batching RPCs)
• Use nTx from getblockheader RPC for better batching
• Handle bitcoind connection failures - instead of crashing
• Add getrawtransactions() API (for RPC batching)

Performance

• Use rayon for faster multi-block indexing on multi-core systems
• Experiment with sled DB

Rust

• Use Bytes instead of Vec[u8] when possible
• Return errors instead of panics
• Use generators instead of vectors