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By default the driver does not use any compression on connections.
It’s possible to specify a preferred compression algorithm.
The driver will try using it, but if the database doesn’t support it, it will fall back to no compression.
Available compression algorithms:
Snappy
LZ4
An example enabling Snappy compression algorithm:
use scylla::{Session, SessionBuilder};
use scylla::transport::Compression;
use std::error::Error;
#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
let uri = std::env::var("SCYLLA_URI")
.unwrap_or_else(|_| "127.0.0.1:9042".to_string());
let session: Session = SessionBuilder::new()
.known_node(uri)
.compression(Some(Compression::Snappy))
.build()
.await?;
Ok(())
}
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