Simple Go Application for YugabyteDB

The application connects to your YugabyteDB instance via Go PostgreSQL driver pgx and performs basic SQL operations. The instructions below are provided for local deployments Yugabyte Docs for single node or Yugabyte Docs for local multi-node. If you use a different type of deployment, then update the sample-app.go file with proper connection parameters.

This example was adapted from the pq example.

Prerequisites

• Go version 1.19.4 or later is preferred. Earlier versions should work as well.
• Command line tool or your favorite IDE, such as VSCode.

Clone Application Repository

Clone the application to your machine:

git clone https://github.com/dataindataout/yugabyte-simple-go-app.git && cd yugabyte-simple-go-app

Provide Cluster Connection Parameters

Open the main.go file and specify the following configuration parameters:

• host - the hostname of your instance.
• port - the port number of your instance (the default is 5433).
• dbUser - the username for your instance.
• dbPassword - the database password.
• sslMode - the SSL mode. Set to verify-full for YugabyteDB Managed deployments.
• sslRootCert - a full path to your CA root cert if used (for example, /Users/ybme/certificates/root.crt)

Build and Run Application

1. Import the required packages:

   go mod tidy

2. Run the application:

   go run main.go

Upon successful execution, you will see output similar to the following:

>>>> Successfully connected to YugabyteDB!
>>>> Successfully created table DemoAccount.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 10000
name = John, age = 28, country = Canada, balance = 9000
>>>> Transferred 800 between accounts.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 9200
name = John, age = 28, country = Canada, balance = 9800

Explore App Logic

Congrats! You've successfully executed a simple Go app that works with YugabyteDB.

Now, explore the source code of main.go:

1. main function - establishes a connection with your cloud instance via the Go PostgreSQL driver pgx.
2. createDatabase function - creates a table and populates it with sample data.
3. selectAccounts function - queries the data with SQL SELECT statements.
4. transferMoneyBetweenAccounts function - updates records consistently with distributed transactions.

Questions or Issues?

Having issues running this application or want to learn more from Yugabyte experts?

Join our Slack channel, or raise a question on StackOverflow and tag the question with yugabytedb!