Meet Fred: The most awesome Redis client for Rust.
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Meet Fred: The most awesome Redis client for Rust.

Publish Date: Oct 18 '23
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TLDR

GitHub logo aembke / fred.rs

An async client for Valkey and Redis

Fred

License License CircleCI Crates.io API docs

An async client for Valkey and Redis

Example

use fred::prelude::*;
#[tokio::main]
async fn main() -> Result<(), Error> {
  let config = Config::from_url("redis://localhost:6379/1")?;
  let client = Builder::from_config(config)
    .with_connection_config(|config| {
      config.connection_timeout = Duration::from_secs(5);
      config.tcp = TcpConfig {
        nodelay: Some(true),
        ..Default::default()
      };
    })
    .build()?;
  client.init().await?;

  client.on_error(|(error, server)| async move {
    println!("{:?}: Connection error: {:?}", server, error);
    Ok(())
  });

  // convert responses to many
…
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Back Story

The goto Redis client for Rust is called redis-rs. It has over 3k stars on Github. but I found it very annoying to use because I quickly found out that if you want to set any value you had to get a mutable reference to the underlying client. Which meant great pain to store Redis client in the global scope. People who do not know what a mutable reference is consider the let keyword in JavaScript. you can mutate or change a variable that is initiated with let.

The other annoyance I had that it didn't support RedisJson which was a bummer because it is very helpful if you store anything other than String key value pair.

Fortunately then I found Fred. Fred is a beautiful piece of engineering. It solved all of the problems I had with the redis-rs package. It is async friendly, it supports RedisJson and most importantly it doesn't require a mutable reference to set value.

It also has a lot of other great features. Consider starring the project and spreading the words!

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