simpledb

NoSQL embedded database on top of RocksDB.

Quick Start

Add this to your Cargo.toml:

[dependencies]
simpledb = "0.1.5"

Example:

use simpledb::Database;

fn main() {
    // open a database
    let db = Database::open("./target/path/to/database").unwrap();
    // left push a value to a list
    db.list_left_push("key", "value".as_bytes()).unwrap();
}

Data Types and Methods

Map

Store key/value pairs, includes the following methods with map_ prefix: get, put, delete, count, for_each, items.

Set

Store unique values, includes the following methods with set_ prefix: add, is_member, delete, count, for_each, items.

List

Store ordered values, includes the following methods with list_ prefix: left_push, left_pop, right_push, right_pop, count, for_each, items.

Sorted List

Store sorted score/value pairs, may including multiple pairs, includes the following methods with sorted_list_ prefix: add, left_pop, right_pop, count, for_each, items.

Sorted Set

Store sorted unique score/value pairs, includes the following methods with sorted_set_ prefix: add, is_member, delete, left, right, for_each, items.

Benchmark

Example codes from benchmark directory.

rustc 1.67.1 (d5a82bbd2 2023-02-07)
Ubuntu 18.04
Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz x 16

method	write	op/s
map_get		662,251
map_count		1,369,863
map_put	Y	105,152
map_delete	Y	99,900
set_count		1,639,344
set_is_member		746,268
set_add	Y	109,409
set_delete	Y	105,152
list_count		1,136,363
list_left_push	Y	116,414
list_left_pop	Y	96,339
list_right_push	Y	115,207
list_right_pop	Y	98,522
sorted_list_count		1,666,666
sorted_list_add	Y	121,951
sorted_list_left_pop	Y	20,080
sorted_list_right_pop	Y	9,891
sorted_set_is_member		666,666
sorted_set_count		1,428,571
sorted_set_add	Y	83,333
sorted_set_left	Y	40,160
sorted_set_right	Y	13,793
sorted_set_delete	Y	27,548

License

MIT License

Copyright (c) 2020-2023 LEI Zongmin <leizongmin@gmail.com>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

simpledb 0.1.7