gcs

package

v1.1.0 Latest Latest Go to latest Published: Feb 14, 2024 License: MIT Imports: 16 Imported by: 0

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func U64FromHex(src []byte) uint64

type Builder struct {
	// contains filtered or unexported fields
}

func NewBuilder(in *os.File, out io.Writer, probability uint64, indexGranularity uint64) *Builder

NewBuilder builder for a new GCS file database.

probability is the False positive rate for queries, 1-in-p. indexGranularity is the entries per index point (16 bytes each).

func (b *Builder) Process(skipWait bool) error

Process creates the gcs file using the inputs in the builder Concurrent file read inspired by https://marcellanz.com/post/file-read-challenge/

type Reader struct {
	// contains filtered or unexported fields
}

func NewReader(fileName string) *Reader

func (r *Reader) Exists(target uint64) (bool, error)

func (r *Reader) Initialize() error

Initialize only loads the database index into memory. This does not load the whole file in RAM.