Golang Microservice With Redis

This directory contains the all files for the Golang Microservice built with Redis.

Requirements

Go

This project uses Go as it's main language. The version of Go used in this project is 1.22. You can install Go either directly from the Golang website or using goenv.

Redis

Redis is used in the project as the primary database. This can be installed either by following instructions for your operating system, or by using Docker.

Getting Started

Cloning The Repo

First create a new directory using your terminal with the command

mkdir go_micro_service

Move to the new directory with the command

cd go_micro_service

Then enter

go mod init go_micro_service
# this command installs all the required dependencies for your project.
go mod tidy

You will be ready to go with your project and start modifying it the way you want.

API Commands

Getting All Orders

Curl Command

curl -sS 127.0.0.1:3000/orders | jq

Httpie/Postman/Thunder Client e.t.c.

• Select GET in the method.
• Enter http://127.0.0.1:3000/orders/ in the URL field.
• Click the "Send" button to send the request.

Adding An Order

Curl Command

curl -X POST -d '{"customer_id":"'$(uuidgen)'","line_items":[{"item_id":"'$(uuidgen)'","quantity":<<5>>,"price":<<2500>>}]}' 127.0.0.1:3000/orders

Httpie/Postman/Thunder Client e.t.c.

• Select POST from the dropdown menu for the HTTP method.
• Enter http://127.0.0.1:3000/orders in the URL field.
• Switch to the Body tab.
• Select JSON as the body type.

Since Httpie/Postman/Thunder Client doesn't directly support shell command execution like uuidgen, you need to manually generate UUIDs or use an online UUID generator to create them. This can apply to Postman and Httpie.

• Once you have the UUIDs, you can format the JSON data like this:

{
"customer_id": "generated-uuid-1",
"line_items": [
{
"item_id": "generated-uuid-2",
"quantity": 5,
"price": 2500
}
]
}

• After entering the JSON data, click the "Send" button to send the request.

Getting An Order By ID

Curl Command

curl -sS 127.0.0.1:3000/orders/<<enter-order-id>> | jq

Httpie/Postman/Thunder Client e.t.c.

• Select GET from the dropdown menu for the HTTP method.
• Enter http://127.0.0.1:3000/orders/<<enter-order-id>> in the URL field.
• Click "Send" to execute the request.

Updating An Order - ShippedAt Time

Curl Command

curl -X PUT -d '{"status":"shipped"}' -sS "127.0.0.1:3000/orders/<<enter-order-id>>" -v

Httpie/Postman/Thunder Client e.t.c.

• Select PUT from the dropdown menu for the HTTP method.
• Enter http://127.0.0.1:3000/orders/<<enter-order-id>> in the URL field.
• Add Content-Type: application/json if required by your API.
• Switch to the "Body" tab.
• Select JSON as the body type.
• Enter the JSON data for the request body:

{
"status": "shipped"
}

• After entering the JSON data, click the "Send" button to send the request.

Updating An Order - CompletedAt Time

Curl Command

curl -X PUT -d '{"status":"completed"}' -sS "127.0.0.1:3000/orders/<<enter-order-id>>" -v

Httpie/Postman/Thunder Client e.t.c.

• Select PUT from the dropdown menu for the HTTP method.
• Enter http://127.0.0.1:3000/orders/<<enter-order-id>> in the URL field.
• Add Content-Type: application/json if required by your API.
• Switch to the "Body" tab.
• Select JSON as the body type.
• Enter the JSON data for the request body:

{
"status": "completed"
}

• After entering the JSON data, click the "Send" button to send the request.

Deleting An Order

Curl Command

curl -X DELETE 127.0.0.1:3000/orders/<<enter-order-id>>

Httpie/Postman/Thunder Client e.t.c.

• Select DELETE from the dropdown menu for the HTTP method.
• Enter http://127.0.0.1:3000/orders/<<enter-order-id>> in the URL field.
• Click "Send" to execute the request.

This is the documentation of the API commands from a microservices course by Dreams Of Code on YouTube by Net Ninja.

Here is the playlist to the full course.

This is the link to the GitHub repo of this course for more info.