Driver metrics

During operation the driver collects various metrics.

They can be accessed at any moment using Session::get_metrics()

Collected metrics:

  • Query latencies
  • Total number of nonpaged queries
  • Number of errors during nonpaged queries
  • Total number of paged queries
  • Number of errors during paged queries
  • Number of retries


fn main() {
extern crate scylla;
use scylla::Session;
use std::error::Error;
async fn check_only_compiles(session: &Session) -> Result<(), Box<dyn Error>> {
let metrics = session.get_metrics();

println!("Queries requested: {}", metrics.get_queries_num());
println!("Iter queries requested: {}", metrics.get_queries_iter_num());
println!("Errors occured: {}", metrics.get_errors_num());
println!("Iter errors occured: {}", metrics.get_errors_iter_num());
println!("Average latency: {}", metrics.get_latency_avg_ms().unwrap());
    "99.9 latency percentile: {}",