How to dumps/loads cuckoofilter from file?

[FelixSeptem]

I have three question before import cuckoofilter into my project:

1. how to dumps and loads cuckoofilter from file in order to failover?
2. what's recommend ratio for data size/cuckoofilter size?
3. how to resize cuckoofilter for scale purpose？

[0xleizhang]

@FelixSeptem maybe we can fork this repo. change all field to start with capital . serialize to json to dump. load json to filter .

[FelixSeptem]

@FelixSeptem maybe we can fork this repo. change all field to start with capital . serialize to json to dump. load json to filter .

gob maybe a better choice in Golang to serialize and deserialize

[0xleizhang]

@FelixSeptem we don't need do it self .the api has Encode Decode method.

func (cf *Filter) Encode() []byte 

func Decode(bytes []byte) (*Filter, error)

[0xleizhang]

complete code

var (
	//todo autoresize
	filter = cuckoo.NewFilter(1000)
)

const (
	fileName = "cuckoo-filter.data"
)

func GetFilter() *cuckoo.Filter {

	bytes, err := ioutil.ReadFile(fileName)

	if err == nil {
		decodeFilter, decodeError := cuckoo.Decode(bytes)
		if decodeError == nil {
			filter = decodeFilter
		}
	}

	return filter
}

func DumpFilter() {

	bytes := filter.Encode()
	err := ioutil.WriteFile(fileName, bytes, 0755)
	if err != nil {
		log.Error(err.Error())
	}

}