Cuckoo

Implementing a Cuckoo filter, based on the paper Cuckoo Filter: Practically Better Than Bloom

Example Usage

package main

import(
	"log"
	"github.com/arriqaaq/cuckoo"
)

func main(){
	f := cuckoo.NewCuckooFilter(uint(5000000), 0.001)
	n1 := []byte("Bess")
	err := f.Insert(n1)
	if err!=nil{
		log.Println("bucket full: ",err)
	}
	isPresent := f.Lookup(n1)
	log.Println("key present? ",isPresent)

}

Performance

			BenchmarkCuckooAdd-4          	 2000000	      1008 ns/op
			BenchmarkCuckooTest-4         	 2000000	       685 ns/op
			BenchmarkCuckooTestAndAdd-4   	 1000000	      1780 ns/op
			BenchmarkCuckooLookupAndDelete-4 2000000	       796 ns/op

Reference

• https://www.cs.cmu.edu/~dga/papers/cuckoo-conext2014.pdf
• https://brilliant.org/wiki/cuckoo-filter/
• https://github.com/tylertreat/BoomFilters

TODO

• Make it thread safe
• Improve hashing time, need to optimize on Insertion function