Crate jfs[][src]

Expand description

A simple JSON file store written in Rust. This is a port of the Node.js library json-file-store.

WARNING: Don’t use it if you want to persist a large amount of objects. Use a real DB instead.


use serde::{Serialize,Deserialize};
use jfs::Store;

struct Foo {
    foo: String

let db = Store::new("data").unwrap();
let f = Foo { foo: "bar".to_owned() };
let id =;
let obj = db.get::<Foo>(&id).unwrap();

You can also store all data in one single JSON-File:

let mut cfg = jfs::Config::default();
cfg.single = true; // false is default
let db = jfs::Store::new_with_cfg("data",cfg);

If you like to pretty print the file content, set pretty to true and choose a number of whitespaces for the indention:

let mut cfg = jfs::Config::default();
cfg.pretty = true;  // false is default
cfg.indent = 4;     // 2 is default

Creating a store instance that is living in the memory can be done like this:

let db = jfs::Store::new(jfs::IN_MEMORY).unwrap();