main.go

package main

import (
	"fmt"
	"log"

	"github.com/boltdb/bolt"
)

var bucketName = []byte("bucket")

func main() {
	db, err := bolt.Open("my.db", 0600, nil)
	if err != nil {
		log.Fatal(err)
	}
	defer db.Close()

	err = db.Update(func(tx *bolt.Tx) error {
		_, err := tx.CreateBucket(bucketName)
		return err
	})
	if err != nil {
		log.Fatalf("create bucket: %s", err.Error())
	}

	err = put(db, "test", "abcd")
	if err != nil {
		log.Fatalf("put: %s", err.Error())
	}

	val := get(db, "test")
	fmt.Println(string(val))

	for i := 0; i <= 1000; i++ {
		put(db, fmt.Sprintf("test%d", i), fmt.Sprintf("val%d", i))
	}

	for i := 0; i <= 1000; i++ {
		get(db, fmt.Sprintf("test%d", i))
	}

	fmt.Println(string(val))
}

func get(db *bolt.DB, key string) (val []byte) {
	db.View(func(tx *bolt.Tx) error {
		b := tx.Bucket(bucketName)
		val = b.Get([]byte(key))
		return nil
	})
	return val
}

func put(db *bolt.DB, key, value string) error {
	return db.Update(func(tx *bolt.Tx) error {
		b := tx.Bucket(bucketName)

		// Persist bytes to users bucket.
		return b.Put([]byte(key), []byte(value))
	})
}