0.1.3 - This version is safe to use because it has no known security vulnerabilities at this time. Find out if your coding project uses this component and get notified of any reported security vulnerabilities with Meterian-X Open Source Security Platform
Maintain your licence declarations and avoid unwanted licences to protect your IP the way you intended.
Apache-2.0 - Apache License 2.0
This is a Rust implementation of the DDSketch quantile sketch algorithm. DDSketch is a fully-mergeable quantile sketch with relative-error guarantees.
use ddsketchy::{DDSketch, DDSketchError};
fn main() -> Result<(), DDSketchError> {
// Create a new sketch with 1% relative error
let mut sketch = DDSketch::new(0.01)?;
// Add some values
sketch.add(1.0);
sketch.add(2.0);
sketch.add(3.0);
sketch.add(4.0);
sketch.add(5.0);
// Get the 50th percentile (median)
let median = sketch.quantile(0.5)?;
println!("Median: {}", median);
// Get the 90th percentile
let p90 = sketch.quantile(0.9)?;
println!("90th percentile: {}", p90);
Ok(())
}ddsketchy supports optional serialization via serde. Serialization is disabled by default to keep the library dependency-free. To enable it, add the serde feature
use ddsketchy::DDSketch;
fn main() -> Result<(), Box<dyn std::error::Error>> {
let mut sketch = DDSketch::new(0.01)?;
sketch.add(1.0);
sketch.add(2.0);
// Serialize to JSON
let json = serde_json::to_string(&sketch)?;
println!("Serialized: {}", json);
// Deserialize from JSON
let restored: DDSketch = serde_json::from_str(&json)?;
// Verify the sketch works correctly
assert_eq!(sketch.count(), restored.count());
assert_eq!(sketch.quantile(0.5)?, restored.quantile(0.5)?);
Ok(())
}The serialization handles all internal state including infinity values for min/max bounds in empty sketches. Empty sketches serialize min/max as null values, while sketches with data serialize them as numbers.