35 lines
2.4 KiB
Markdown
35 lines
2.4 KiB
Markdown
# Electrum Server in Rust
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[](https://travis-ci.com/romanz/electrs)
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[](http://makeapullrequest.com)
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[](https://crates.io/crates/electrs)
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[](https://gitter.im/romanz/electrs)
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An efficient re-implementation of Electrum Server, inspired by [ElectrumX](https://github.com/kyuupichan/electrumx), [Electrum Personal Server](https://github.com/chris-belcher/electrum-personal-server) and [bitcoincore-indexd](https://github.com/jonasschnelli/bitcoincore-indexd).
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The motivation behind this project is to enable a user to run his own Electrum server,
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with required hardware resources not much beyond those of a [full node](https://en.bitcoin.it/wiki/Full_node#Why_should_you_use_a_full_node_wallet).
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The server indexes the entire Bitcoin blockchain, and the resulting index enables fast queries for any given user wallet,
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allowing the user to keep real-time track of his balances and his transaction history using the [Electrum wallet](https://electrum.org/).
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Since it runs on the user's own machine, there is no need for the wallet to communicate with external Electrum servers,
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thus preserving the privacy of the user's addresses and balances.
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## Features
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* Supports Electrum protocol [v1.2](https://electrumx.readthedocs.io/en/latest/protocol.html)
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* Maintains an index over transaction inputs and outputs, allowing fast balance queries
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* Fast synchronization of the Bitcoin blockchain (~2 hours for ~187GB @ July 2018) on [modest hardware](https://gist.github.com/romanz/cd9324474de0c2f121198afe3d063548)
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* Low index storage overhead (~20%), relying on a local full node for transaction retrieval
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* Efficient mempool tracker (allowing better fee [estimation](https://github.com/spesmilo/electrum/blob/59c1d03f018026ac301c4e74facfc64da8ae4708/RELEASE-NOTES#L34-L46))
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* Low CPU & memory usage (after initial indexing)
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* [`txindex`](https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch03.asciidoc#txindex) is not required for the Bitcoin node
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* Uses a single [RocksDB](https://github.com/spacejam/rust-rocksdb) database, for better consistency and crash recovery
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## Usage
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See [here](doc/usage.md) for installation, build and usage instructions.
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## Index database
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The database schema is described [here](doc/schema.md).
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