Tub 🛁

A blazingly fast object pool for Rust.

Values are retrieved from the pool asynchronously. When the retrieved value goes out of scope, the value is returned to the pool.

Documentation

Read about the public API: docs.rs/tub

Read about the design: wcygan.io/post/pools

Usage

To use Tub, add this to your Cargo.toml:

[dependencies]
tub = "0.3.7"

Then create and use a pool like so:

use tub::Pool;

#[tokio::main]
async fn main() {
   // Create a pool
   let pool: Pool<Box> = (0..10)
       .map(|_| Box { value: 123 })
       .into();

   // Get a value from the pool
   let mut box1 = pool.acquire().await;

   // Use the value
   box1.foo();

   // Modify the value
   *box1 = Box { value: 456 };

   // Return the value to the pool
   drop(box1);
}

struct Box {
  value: u32
}

impl Box {
  fn foo(&mut self) { }
}