Use Rust's tokio runtime with async/await to build high-performance, concurrent ETL pipelines that process data streams efficiently.
use tokio::io::{AsyncBufReadExt, BufReader};
use std::fs::File;
#[tokio::main]
async fn main() -> std::io::Result<()> {
let file = File::open("input.csv")?;
let reader = BufReader::new(file);
let mut lines = reader.lines();
while let Some(line) = lines.next_line().await? {
let processed = line.to_uppercase();
println!("{}", processed);
}
Ok(())
}