simpledb

NoSQL embedded database on top of RocksDB.

Documents: https://docs.rs/simpledb

Usage

Add this to your Cargo.toml:

toml [dependencies] simpledb = "0.1"

Example:

```rust 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.listleftpush("key", "value".as_bytes()).unwrap(); } ```

Supported Data Type

map: Store field/value pairs, includes the following operations with map_ prefix: get, put, delete, count, for_each, items.
set: Store unique values, includes the following operations with set_ prefix: add, is_member, delete, count, for_each, items.
list: Store ordered values, includes the following operations with list_ prefix: left_push, left_pop, right_push, right_pop, count, for_each, items.
sorted list: Store sorted score/value pairs, includes the following operations with sorted_list_ prefix: add, left_pop, right_pop, count, for_each, items.
sorted set: store sorted score/value pairs, includes the following operations with sorted_set_ prefix: add, is_member, delete, left, right, for_each, items.
Notes: the difference between sorted list and sorted set is list allow the same members, set does not allow the same members.

Benchmark

Example codes from benchmark directory.

rustc 1.51.0-nightly (44e3daf5e 2020-12-31)
macOS Big Sur 11.1
Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz, MacBook Pro (15-inch, 2016)

method | write | op/s ----------------------|------------|---------- mapput | yes | 62,539 mapget | | 355,871 mapcount | | 735,294 mapdelete | yes | 62,656 setadd | yes | 64,724 setcount | | 813,008 setismember | | 380,228 setdelete | yes | 61,349 listleftpush | yes | 68,775 listcount | | 666,666 listleftpop | yes | 60,277 listrightpush | yes | 64,641 listcount | | 609,756 listrightpop | yes | 56,433 sortedlistadd | yes | 68,493 sortedlistcount | | 588,235 sortedlistleftpop | yes | 14,880 sortedlistadd | yes | 67,114 sortedlistrightpop | yes | 7,923 sortedsetadd | yes | 47,393 sortedsetismember | | 285,714 sortedsetcount | | 500,000 sortedsetleft | yes | 16,181 sortedsetright | yes | 9,082 sortedsetdelete | yes | 19,920

Changelog

v0.1.4

fix(encoding): to_bytes() method not found in &[u8];
update dependencies rand to v0.8, bytes to v1.0;

v0.1.3

feat: add sorted set data type.

v0.1.2

feat: add for_each_key_with_prefix & keys & keys_with_prefix operations.

v0.1.1:

feat: add map_for_each_with_prefix & map_items_with_prefix operations.

License

```text MIT License

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. ```