NeutronDB

NeutronDB is a log-structured merge-tree key-value store for any implemented data type.

Usage

Cargo.toml

text [dependencies] neutrondb = "4.0.0"

Module.rs

text use neutrondb::Store;

About

Files

• Logs: Recent puts and deletes
• Table: Non recent key-values
• Graves: Deleted keys

Neutron Logs

```text

+ - - - - - - - - - - - - - - - - - - - - - +
|                                           |
|   + - - - - - - - +   + - - - - - - - +   |
|   |   Log 1 Type  |   |   Log 1 Data  |   |
|   + - - - - - - - +   + - - - - - - - +   |
|                                           |
|                    ...                    |   
+ - - - - - - - - - - - - - - - - - - - - - +

```

Type: Data

• put: key, value
• delete: key

Neutron Table

```text

+ - - - - - - - - - - - - - +
|                           |
|   + - - - - - - - - - +   |
|   |   Bloom Filter    |   |
|   + - - - - - - - - - +   |
|                           |
|   + - - - - - - - - - +   |
|   |       Keys        |   |
|   + - - - - - - - - - +   |
|                           |
|   + - - - - - - - - - +   |
|   |       Values      |   |
|   + - - - - - - - - - +   |
|                           |
+ - - - - - - - - - - - - - +

```

Neutron Graves

```text

+ - - - - - - - - - +
|                   |
|   + - - - - - +   |
|   |   Key 1   |   |
|   + - - - - - +   |
|                   |
|       ....        |
+ - - - - - - - - - +

```

API

new: directory -> Store

text let mut accounts_store: Store<Hash, Account> = Store::new("./ndb")?;

put: &key, &value

text accounts_store.put(&Hash, &Account)?;

get: &key -> value

```text

let account = accounts_store.get(&Hash)?;

```

delete: &key

text accounts_store.delete(&Hash)?;

2022-10-18