pathmap 0.2.0-alpha0

A key-value store with prefix compression, structural sharing, and powerful algebraic operations
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pathmap

This crate provides a key-value store with prefix compression, structural sharing, and powerful algebraic operations.

PathMap is optimized for large data sets and can be used efficiently in a multi-threaded environment.

This crate provides the low-level data structure for MORK

Usage

Check out the book.

kvmap

The crate name pathmap was previously used by Canmi for a different project, kvmap (formerly published as pathmap), which is a SQL-driven key-value store.

If you are looking for Canmi’s SQL-based KVMap project, please visit:
https://github.com/canmi21/kvmap

Getting Started

Add the following to your Cargo.toml:

pathmap = ">=0.2.0-alpha0, <0.3.0"

NOTE This is pre-release software and there is likely to be further API churn. Specify an exact version to be insulated from the churn until the 0.2.0 release.

Optional Cargo features

  • nightly: Uses nightly-only features including support for a custom Allocator, better SIMD optimizations, etc. Requires the nightly tool-chain.

  • arena_compact: Exposes an additional read-only trie format and read-zipper type that is more efficient in memory and supports mapping a large file from disk.

  • jemalloc: Enables jemalloc as the default allocator. This dramatically improves scaling for write-heavy workloads and is generally recommended. The only reason it is not the default is to avoid interference with the host application's allocator.

  • zipper_tracking: Exports the zipper_tracking module publicly, allowing the host application to use the conflict-checking logic independently of zipper creation.

  • viz: Provide APIs to inspect and visualize pathmap trie structures. Useful to observe structural sharing.

Other cargo features in this crate are intended for use by the developers of pathmap itself.