Reference backend implementation using BTreeMap

[akiradeveloper]

For reference, it is nice to have a backend implementation using BTreeMap.

impl Node {
    pub fn new(id: u8, port: u16, n_shards: u32) -> Result<Self> {
        let nd_tag = format!("ND{port}>");
        let (tx, rx) = tokio::sync::oneshot::channel();

        let svc_task = async move {
            info!("add (id={id})");

            let node_id = {
                let address = format!("http://127.0.0.1:{port}");
                address.parse().unwrap()
            };
            let node = sorock::RaftNode::new(node_id);

            let db = {
                // REPLACE HERE
                // let mem = redb::backends::InMemoryBackend::new();
                // let db = redb::Database::builder().create_with_backend(mem).unwrap();
                // sorock::backend::redb::Backend::new(db)

                sorock::backend::btree::Backend::new()
            };

[Imesh7]

Hi @akiradeveloper ,
I would like to work on this issue.

Thanks

[Imesh7]

@akiradeveloper I would like to know , if there is any suggestion.
Thanks