Go Database: Storm & BoltDB Guide

1 year ago
William Carter
2 minutes

Storm is a wrapper library for BoltDB, offering convenient methods and tools for using the BoltDB embedded database in Go. Below is a simple example demonstrating how to perform database operations using Storm.

Firstly, we need to import the packages of Storm and BoltDB.

import (
	"github.com/asdine/storm"
	"github.com/boltdb/bolt"
)

Next, we can establish a database connection.

db, err := storm.Open("mydb.db", storm.AutoIncrement())
if err != nil {
    log.Fatal(err)
}
defer db.Close()

In this example, we are using the AutoIncrement option to automatically generate a unique ID for each inserted record.

Next, we can define a struct type to represent the data in the database.

type Person struct {
	ID   int    `storm:"id,increment"`
	Name string `storm:"index"`
	Age  int
}

In this example, the Person type has an auto-incrementing ID field and an indexed Name field.

Then, we can insert a record into the database.

person := Person{Name: "John", Age: 30}
err = db.Save(&person)
if err != nil {
    log.Fatal(err)
}

We can save data to the database using the Save method. Note that we are passing a pointer to a Person struct.

Next, we can retrieve records from the database.

var persons []Person
err = db.All(&persons)
if err != nil {
    log.Fatal(err)
}

for _, person := range persons {
    fmt.Printf("ID: %d, Name: %s, Age: %d\n", person.ID, person.Name, person.Age)
}

In this example, we use the All method to retrieve all records and store them in a slice []Person. We can then iterate through the slice and print the information of each person.

Aside from the All method, Storm also provides many other query methods, such as Find and One.

These are the basic steps for performing BoltDB database operations using Storm. More features and usage can be found in Storm’s documentation at: https://github.com/asdine/storm

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