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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
Example¶
let metrics = session.get_metrics();
println!("Queries requested: {}", metrics.get_queries_num());
println!("Iter queries requested: {}", metrics.get_queries_iter_num());
println!("Errors occurred: {}", metrics.get_errors_num());
println!("Iter errors occurred: {}", metrics.get_errors_iter_num());
println!("Average latency: {}", metrics.get_latency_avg_ms().unwrap());
println!(
"99.9 latency percentile: {}",
metrics.get_latency_percentile_ms(99.9).unwrap()
);