Distributed mutually exclusive locks in MongoDB.

This crate contains only async implementation. If you need a synchronous version, use mongo-lock crate.

This implementation relies on system time. Ensure that NTP clients on your servers are configured properly.

Installation

Add this crate to Cargo.toml

toml [dependencies] mongo_lock_async = "0"

Usage

```rust

[tokio::main]

async fn main() { let mongo = mongodb::Client::withuristr("mongodb://localhost").await.unwrap();

// We need to ensure that mongodb collection has a proper index.
mongo_lock_async::prepare_database(&mongo).await.unwrap();

if let Ok(Some(lock)) =
    mongo_lock_async::Lock::try_acquire(
        &mongo,
        "my-key",
        std::time::Duration::from_secs(30)
    ).await
{
    println!("Lock acquired.");

    // Release the lock before ttl expires to allow others to acquire it.
    lock.release().await.ok();
}

} ```