# Client Pool

import { Callout } from 'nextra/components';

<Callout type="warning">
  There will be a breaking SDK upgrade in the coming months. This upgrade will make the SDK a lot easier to build with.

This upgrade will affect the interface of the SDK dramatically, and will be coupled with a protocol change - stay tuned for information on early access to the new protocol testnet.


It will also be coupled with the documentation of the SDK on [crates.io](https://crates.io/).
</Callout>

We have a configurable-size Client Pool for processes that require multiple clients in quick succession (this is used by default by the [`TcpProxyClient`](./tcpproxy) for instance)

This will be useful for developers looking to build connection logic, or just are using raw SDK clients in a sitatuation where there are multiple connections with a lot of churn.

> You can find this code [here](https://github.com/nymtech/nym/blob/develop/sdk/rust/nym-sdk/examples/client_pool.rs)