How to Process Large Datasets in Rust

Performance

2026-04-17T12:05:42+00:00

Process large datasets in Rust by using BufReader and iterators to handle data line-by-line without exhausting memory.

Process large datasets in Rust by reading files lazily with BufReader and using iterators to transform data without loading everything into memory.

use std::fs::File;
use std::io::{self, BufRead, BufReader};

fn main() -> io::Result<()> {
    let file = File::open("large_dataset.csv")?;
    let reader = BufReader::new(file);

    for line in reader.lines() {
        let line = line?;
        // Process line here
        println!("Processing: {}", line);
    }
    Ok(())
}