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Braydon Fuller 14ac450af3 db: add options to configure block index database
There was a previous assumption that blockindex would be quite small. With addressindex
and spentindex enabled the blockindex is much larger and the amount of cache allocated for
it should also increase. Furthermore, enabling compression should decrease the amount of
disk space required and less data to write/read. The default leveldb max_open_files is set to
1000, for the blockindex the default is set to 1000 with compression. The 64 value that is
current is kept for the utxo database and does not enable compression. Two additional options
are added here to be able to configure the values for leveldb and the block index:

- `-dbmaxopenfiles` A number of files for leveldb to keep open
- `-dbcompression` Boolean 0 or 1 to enable snappy leveldb compression
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README.md

Zcash 2.0.3

What is Zcash?

Zcash is an implementation of the "Zerocash" protocol. Based on Bitcoin's code, it intends to offer a far higher standard of privacy through a sophisticated zero-knowledge proving scheme that preserves confidentiality of transaction metadata. Technical details are available in our Protocol Specification.

This software is the Zcash client. It downloads and stores the entire history of Zcash transactions; depending on the speed of your computer and network connection, the synchronization process could take a day or more once the blockchain has reached a significant size.

🔒 Security Warnings

See important security warnings on the Security Information page.

Zcash is experimental and a work-in-progress. Use at your own risk.

📒 Deprecation Policy

This release is considered deprecated 16 weeks after the release day. There is an automatic deprecation shutdown feature which will halt the node some time after this 16 week time period. The automatic feature is based on block height.

Getting Started

Please see our user guide for joining the main Zcash network.

Need Help?

  • 📘 See the documentation at the ReadtheDocs for help and more information.
  • 📨 Ask for help on the Zcash forum.
  • 🔍 Chat with our support community on Rocket.Chat

Participation in the Zcash project is subject to a Code of Conduct.

Building

Build Zcash along with most dependencies from source by running:

./zcutil/build.sh -j$(nproc)

Currently only Linux is officially supported.

License

For license information see the file COPYING.