goskizze is a Go client for the Skizze database.
Install goskizze with the go get command:
go get gopkg.in/skizzehq/goskizze.v1/skizze
package main
import (
"fmt"
"gopkg.in/skizzehq/goskizze.v1/skizze"
)
func main() {
client, err := skizze.Dial("127.0.0.1:3596", skizze.Options{Insecure: true})
if err != nil {
fmt.Printf("Error connecting to Skizze: %s\n", err)
return
}
// A domain is an easy way to use the same data set for multiple statistics
name := "testdomain"
client.CreateDomain(name)
// Adding values to a domain will trigger statistics generation for each of
// the supported Sketches in the domain
client.AddToDomain(name, "alvin", "simon", "theodore")
// The Membership sketch will test if a value resides in a data set, returning
// true or false
membs, _ := client.GetMembership(name, "alvin", "simon", "theodore", "gary")
for _, m := range membs {
fmt.Printf("MEMB: %s is in %s: %v\n", m.Value, name, m.IsMember)
}
// The Frequency sketch will return how many times a value occurs in a sketch
freqs, _ := client.GetFrequency(name, "alvin", "simon", "theodore", "gary")
for _, f := range freqs {
fmt.Printf("FREQ: %s appears in %s %v times\n", f.Value, name, f.Count)
}
// The Rankings sketch will always keep the top N (configurable) rankings and
// their occurrance counts
ranks, _ := client.GetRankings(name)
for i, r := range ranks {
fmt.Printf("RANK: #%v = %s (count=%v)\n", i, r.Value, r.Count)
}
// Finally, the Cardinality sketch will keep a count of how many unique items
// have been added to the data set
card, _ := client.GetCardinality(name)
fmt.Printf("CARD: There are %v items in the %s domain\n\n", card, name)
client.DeleteDomain(name)
}Output:
MEMB: alvin is in testdomain: true
MEMB: simon is in testdomain: true
MEMB: theodore is in testdomain: true
MEMB: gary is in testdomain: false
FREQ: alvin appears in testdomain 1 times
FREQ: simon appears in testdomain 1 times
FREQ: theodore appears in testdomain 1 times
FREQ: gary appears in testdomain 0 times
RANK: #0 = alvin (count=1)
RANK: #1 = simon (count=1)
RANK: #2 = theodore (count=1)
CARD: There are 3 items in the testdomain domain
Note: Error checking has been removed for readability, but should be done in production code.
- Support customized domain/sketch creation (with properties)
- Benchmarking
- Reduce allocations
goskizze is available under the Apache License, Version 2.0.