siamesedb

The simple local key-value store.

Features

• key-value store.
• in-memory and file store.
• DbMapString has keys as utf-8 string.
• DbMapU64 has keys as u64.
• The value is any bytes included utf-8 string.
• The file store is implemented the basic B-Tree. (no hash and no leaf)
• Small db file size.
• Separated files. (data record file and index file)
• One database has some db-map-string and some db-map-u64.
• minimum support rustc 1.54.0 (a178d0322 2021-07-26)

Compatibility

• Nothing?

Examples

Example DbMapString:

```rust use siamesedb::DbMapString;

fn main() -> std::io::Result<()> { let dbname = "target/tmp/doc-test1.shamdb"; // remove database let _ = std::fs::removedirall(dbname); // create or open database let db = siamesedb::openfile(dbname)?; // create or get db map let mut dbmap = db.dbmapstring("somemap1")?; // let r = dbmap.getstring("key1")?; asserteq!(r, None); dbmap.putstring("key1", "value1")?; let r = dbmap.getstring("key1")?; asserteq!(r, Some("value1".tostring())); dbmap.sync_data()?; Ok(()) } ```

Example DbMapU64:

```rust use siamesedb::DbMapU64;

fn main() -> std::io::Result<()> { let dbname = "target/tmp/doc-test2.shamdb"; // remove database let _ = std::fs::removedirall(dbname); // create or open database let db = siamesedb::openfile(dbname)?; let mut dbmap = db.dbmapu64("somelist1")?; let r = dbmap.getstring(120)?; asserteq!(r, None); dbmap.putstring(120, "value120")?; let r = dbmap.getstring(120)?; asserteq!(r, Some("value120".tostring())); dbmap.sync_data()?; Ok(()) } ```

Changelogs

This crate's changelog here.

License

This project is licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)

at your option.