<p>If you want to split your app into microservices but don’t want to overcomplicate things, this guide is for you. I’ll walk through how to build simple, clean microservices using Go and Echo, a lightweight and super fast <a href="https://reliasoftware.com/blog/most-popular-web-development-frameworks" target="_blank" rel="noopener noreferrer">web framework</a>. We’ll use Docker Compose for containerization so you can run everything locally.</p><p>By the end of this, you’ll have two basic services: one for products, one for orders. They’ll talk to each other, handle versioned CRUD APIs, and be easy to run, test, and grow later.</p><h2>What are Microservices?</h2><p>Microservices are small, independently deployable services, each responsible for a single business capability. Unlike monolithic applications, microservices facilitate easier scaling, independent deployments, fault isolation, and faster iterations.&nbsp;</p><p>Microservices architecture has rapidly become an industry standard for building scalable, maintainable, and highly resilient applications.</p><h2>Why Go and Echo for Microservices?</h2><p><a href="https://reliasoftware.com/blog/what-is-golang">Go Language</a> (Golang), known for its simplicity, blazing performance, and powerful <a href="https://reliasoftware.com/blog/concurrency-in-golang" target="_blank" rel="noopener noreferrer">concurrency model</a>, is an ideal choice for implementing microservices. Coupled with Echo, a high-performance and minimalist <a href="https://reliasoftware.com/blog/top-10-best-golang-web-frameworks" target="_blank" rel="noopener noreferrer">Go web framework</a>, developers can <a href="https://reliasoftware.com/blog/go-openapi-generator" target="_blank" rel="noopener noreferrer">build efficient, clean, and scalable RESTful APIs</a> with minimal overhead.</p><h2>7 Steps to Build Microservices in Go with Echo</h2><h3>Step 1: Set Up the Project</h3><p>Let’s create the project folder and set things up:</p><pre><code class="language-plaintext">mkdir microservices-echo
        cd microservices-echo
        go mod init github.com/yourusername/microservices-echo
        go get github.com/labstack/echo/v4</code></pre><p>&nbsp;</p><h3>Step 2: Organize the Files</h3><p>We’ll split it into two service</p><pre><code class="language-plaintext">microservices-echo
    ├── product-service
    │   └── cmd
    │       └── main.go
    └── order-service
        └── cmd
            └── main.go</code></pre><p>&nbsp;</p><h3>Step 3: Build the Product Service (CRUD + Versioning)</h3><p>This service handles product data. It can create, update, fetch, and delete a product. And we’ll version the API from the start (so we can improve it later without breaking stuff).</p><p>Endpoints:</p><ul><li><code>GET /api/v1/products/:id</code> - Retrieves product details.</li><li><code>POST /api/v1/products</code> - Creates a new product.</li><li><code>PUT /api/v1/products/:id</code> - Updates an existing product.</li><li><code>DELETE /api/v1/products/:id</code> - Deletes a product.</li></ul><pre><code class="language-plaintext">package main
    import (
    	"net/http"
    	"github.com/labstack/echo/v4"
    )
    func main() {
    	e := echo.New()
    	v1 := e.Group("/api/v1")
    	v1.GET("/products/:id", getProduct)
    	v1.POST("/products", createProduct)
    	v1.PUT("/products/:id", updateProduct)
    	v1.DELETE("/products/:id", deleteProduct)
    	e.Logger.Fatal(e.Start(":8081"))
    }
    func getProduct(c echo.Context) error {
    	id := c.Param("id")
    	return c.JSON(http.StatusOK, map[string]interface{}{"product_id": id, "name": "Product Name", "inventory": 100})
    }
    func createProduct(c echo.Context) error {
    	return c.JSON(http.StatusCreated, map[string]string{"status": "product created"})
    }
    func updateProduct(c echo.Context) error {
    	id := c.Param("id")
    	return c.JSON(http.StatusOK, map[string]string{"status": "product updated", "product_id": id})
    }
    func deleteProduct(c echo.Context) error {
    	id := c.Param("id")
    	return c.JSON(http.StatusOK, map[string]string{"status": "product deleted", "product_id": id})
    }</code></pre><p>&nbsp;</p><h3>Step 4: Build the Order Service (Talks to Product Service)</h3><p>Now let’s make the Order Service. When someone places an order, it checks with the Product Service and updates the inventory.</p><p>Endpoints:</p><ul><li><code>POST /api/v1/orders</code> - Creates a new order and updates product inventory.</li></ul><pre><code class="language-plaintext">package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io/ioutil"
	"net/http"
	"github.com/labstack/echo/v4"
)

func main() {
	e := echo.New()

	v1 := e.Group("/api/v1")
	v1.POST("/orders", createOrder)

	e.Logger.Fatal(e.Start(":8082"))
}

type OrderRequest struct {
	ProductID string `json:"product_id"`
	Quantity  int    `json:"quantity"`
}

func createOrder(c echo.Context) error {
	order := new(OrderRequest)
	if err := c.Bind(order); err != nil {
		return c.JSON(http.StatusBadRequest, err)
	}

	resp, err := http.Get(fmt.Sprintf("http://product-service:8081/api/v1/products/%s", order.ProductID))
	if err != nil {
		return c.JSON(http.StatusInternalServerError, err)
	}
	defer resp.Body.Close()
	body, _ := ioutil.ReadAll(resp.Body)

	inventoryUpdate := map[string]int{"inventory": -order.Quantity}
	updateBody, _ := json.Marshal(inventoryUpdate)
	_, err = http.Post(fmt.Sprintf("http://product-service:8081/api/v1/products/%s", order.ProductID), "application/json", bytes.NewBuffer(updateBody))
	if err != nil {
		return c.JSON(http.StatusInternalServerError, err)
	}

	return c.JSON(http.StatusOK, map[string]interface{}{
		"order_status": "created",
		"product_details": json.RawMessage(body),
	})
}</code></pre><h3 style="margin-left:0px;"><strong>Step 5: Docker Compose Setup</strong></h3><p>We’ll <a href="https://reliasoftware.com/blog/dockerize-golang-application" target="_blank" rel="noopener noreferrer">use Docker Compose</a> to spin up both services with one command: <code>docker-compose.yml</code>. Put this at the project root:</p><pre><code class="language-plaintext">version: '3.8'
services:
  product-service:
    build: ./product-service
    ports:
      - "8081:8081"
  order-service:
    build: ./order-service
    ports:
      - "8082:8082"
    depends_on:
      - product-service</code></pre><p>Each service will need a <span style="background-color:rgba(135,131,120,.15);color:#EB5757;"><code>Dockerfile</code></span>:</p><pre><code class="language-plaintext">FROM golang:1.21-alpine

WORKDIR /app
COPY . .
RUN go mod tidy
RUN go build -o main ./cmd/main.go

EXPOSE 8081
CMD ["./main"]</code></pre><p>For Order Service, change <code>EXPOSE</code> to <code>8082</code>.</p><h3>Step 6: Run Everything</h3><p>Time to see it in action:</p><pre><code class="language-plaintext">docker-compose up --build</code></pre><p>Now both services are live.</p><h3>Step 7: Test Communication</h3><p>Use this <code>curl</code> command to test placing an order:</p><pre><code class="language-plaintext">curl -X POST -H "Content-Type: application/json" -d '{"product_id": "123", "quantity": 5}' http://localhost:8082/api/v1/orders</code></pre><p>You get something like this back:</p><pre><code class="language-plaintext">{
	"order_status": "created",
	"product_details": {"product_id": "123", "name": "Product Name", "inventory": "100"}
}</code></pre><h2>Conclusion</h2><p>That’s it! You now have two basic microservices built in Go with Echo, communicating with each other and running in Docker. It’s a solid starting point if you’re learning microservices or just want to build something small and clean.</p><p>From here, you can:</p><ul><li>Add a real database</li><li>Improve <a href="https://reliasoftware.com/blog/advanced-golang-error-handling-techniques" target="_blank" rel="noopener noreferrer">error handling</a></li><li>Use a service discovery tool</li><li>Add auth or API gateway</li><li>Deploy to the cloud</li></ul><p>But for now, you’ve got the foundation set. Keep building, keep learning — and most importantly, keep it simple.</p><p style="text-align:right;"><span style="background-color:transparent;color:rgb(0,0,0);"><i>&gt;&gt;&gt; Follow and Contact&nbsp;</i></span><a href="https://reliasoftware.com/"><span style="background-color:transparent;color:rgb(17,85,204);"><i><u>Relia Software</u></i></span></a><span style="background-color:transparent;color:rgb(0,0,0);"><i> for more information!</i></span></p>

<p><span style="background-color:transparent;color:#000000;">Learn to build Golang microservices with Echo, creating Product and Order service, handling CRUD APIs, inter-service communication, and Docker Compose setup.</span></p>

A Complete Guide to Build Microservices with Golang Echo

 Build Golang Microservices with Echo Framework

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<p>Real-time experiences like chat systems, live dashboards, and notifications are now a fundamental part of modern applications. Redis Pub/Sub, when paired with <a href="https://reliasoftware.com/blog/concurrency-in-golang">Go's concurrency</a> and performance, offers a fast and efficient way to build such features. In this article, we'll walk through building a simple real-time message broadcasting system using Go and Redis Pub/Sub.</p>
<p>&gt;&gt;&nbsp;<em>Read more: </em><em><a href="https://reliasoftware.com/blog/go-for-web-development">Go for Web Development</a>: How Top Companies Benefit from Golang?</em></p>
<h2>What is Pub/Sub?</h2>
<p><strong>Publish/Subscribe (Pub/Sub) is a messaging pattern where the sender (publisher) does not send messages directly to specific receivers. Instead, messages are categorized into channels.</strong> Receivers (subscribers) subscribe to channels and receive any message published to those channels.</p>
<p>Key Concepts:</p>
<ul>
<li><strong>Publisher</strong>: Sends messages to a channel.</li>
<li><strong>Subscriber</strong>: Listens to messages on one or more channels.</li>
<li><strong>Channel</strong>: A named stream of messages.</li>
</ul>
<h2>Why Redis?</h2>
<p>Redis is an open-source, in-memory data structure store, often used as a database, cache, and message broker. It's known for its blazing speed and minimal latency&mdash;two qualities that are essential for real-time systems.</p>
<h3>Why Use Redis for Pub/Sub?</h3>
<ul>
<li><strong>High Performance</strong>: Redis operates entirely in memory, making it ideal for high-throughput, low-latency use cases like messaging.</li>
<li><strong>Simplicity</strong>: Setting up Redis for Pub/Sub is straightforward and requires minimal configuration.</li>
<li><strong>No External Broker Required</strong>: If your application already uses Redis for caching or data storage, Pub/Sub comes built-in&mdash;eliminating the need to add another messaging service.</li>
<li><strong>Multi-language Support</strong>: Redis clients exist for nearly every language, including robust support for Go, enabling seamless integration.</li>
<li><strong>Decoupled Architecture</strong>: Redis Pub/Sub allows services to communicate asynchronously, promoting a loosely coupled architecture.</li>
</ul>
<h3>When to Use It</h3>
<p>Redis Pub/Sub is perfect for lightweight, ephemeral real-time communication like:</p>
<ul>
<li>Live chat and notifications</li>
<li>Real-time analytics and metrics</li>
<li>System monitoring and alerts</li>
</ul>
<h3>Limitations</h3>
<ul>
<li><strong>No Message Durability</strong>: Messages are not stored. If a subscriber is offline, it will miss messages.</li>
<li><strong>No Acknowledgments or Retries</strong>: There&rsquo;s no built-in mechanism for ensuring message delivery or processing.</li>
<li><strong>Not Ideal for Complex Workflows</strong>: Use Redis Streams, Kafka, or RabbitMQ for message queuing, persistence, and consumer groups.</li>
</ul>
<p>For more robust requirements, Redis Streams or other messaging systems like Kafka or NATS may be better suited.</p>
<h2>Setting Up Your Go Environment</h2>
<h3>Initialize Your Project:</h3>
<pre class="language-clike"><code>go mod init redis-pubsub-go</code></pre>
<h3>Install Redis Client:</h3>
<pre class="language-clike"><code>go get github.com/redis/go-redis/v9</code></pre>
<h3>Create Redis Client:</h3>
<pre class="language-clike"><code>package main

import (
    "context"
    "github.com/redis/go-redis/v9"
    "log"
    "time"
    "fmt"
)

var ctx = context.Background()

func createClient() *redis.Client {
    return redis.NewClient(&amp;redis.Options{
        Addr:     "redis:6379",
        Password: "", // no password set
        DB:       0,  // use default DB
    })
}</code></pre>
<h2>Publisher Function</h2>
<p>Here&rsquo;s a simple function to publish messages:</p>
<pre class="language-clike"><code>func publishMessage(rdb *redis.Client, channel string, message string) {
    err := rdb.Publish(ctx, channel, message).Err()
    if err != nil {
        log.Fatalf("Could not publish: %v", err)
    }
    log.Printf("Published: %s", message)
}</code></pre>
<h2>Subscriber Function</h2>
<p>This function listens for messages on a specified channel:</p>
<pre class="language-clike"><code>func subscribeChannel(rdb *redis.Client, channel string) {
    pubsub := rdb.Subscribe(ctx, channel)
    defer pubsub.Close()

    ch := pubsub.Channel()
    log.Printf("Subscribed to channel: %s", channel)

    for msg := range ch {
        log.Printf("Received message: %s", msg.Payload)
    }
}</code></pre>
<h2>Demo: Real-Time Notifications</h2>
<h3>Simulate Publisher:</h3>
<pre class="language-clike"><code>func main() {
    rdb := createClient()

    for i := 1; i &lt;= 5; i++ {
        publishMessage(rdb, "notifications", fmt.Sprintf("Message #%d", i))
        time.Sleep(2 * time.Second)
    }
}</code></pre>
<h3>Simulate Subscriber:</h3>
<pre class="language-clike"><code>func main() {
    rdb := createClient()
    subscribeChannel(rdb, "notifications")
}</code></pre>
<p>Run one instance as publisher, and another as subscriber. You&rsquo;ll see real-time message broadcasting via Redis.</p>
<h3>Expected Output</h3>
<p><strong>Publisher logs:</strong></p>
<pre class="language-clike"><code>Published: Message #1
Published: Message #2
Published: Message #3
...</code></pre>
<p><strong>Subscriber logs:</strong></p>
<pre class="language-clike"><code>Subscribed to channel: notifications
Received message: Message #1
Received message: Message #2
Received message: Message #3
...</code></pre>
<h2><a href="https://reliasoftware.com/blog/dockerize-golang-application">Dockerize A Golang App</a></h2>
<p>To simplify local development, you can use Docker Compose to run both Redis and your Go app.</p>
<h3>Dockerfile</h3>
<pre class="language-clike"><code># syntax=docker/dockerfile:1
FROM golang:1.21-alpine

WORKDIR /app
COPY . .
RUN go mod tidy &amp;&amp; go build -o app

CMD ["./app"]</code></pre>
<h3>docker-compose.yml</h3>
<pre class="language-clike"><code>version: '3.8'
services:
  redis:
    image: redis:7
    container_name: redis-server
    ports:
      - "6379:6379"
    restart: unless-stopped

  app:
    build: .
    container_name: go-pubsub-app
    depends_on:
      - redis
    restart: on-failure</code></pre>
<h3>How to Run It?</h3>
<ol>
<li>Make sure you have Docker installed.</li>
<li>Place your Go app files,&nbsp;<code>Dockerfile</code>, and&nbsp;<code>docker-compose.yml</code>&nbsp;in the project root.</li>
<li>Run the following command:</li>
</ol>
<pre class="language-clike"><code>docker-compose up --build</code></pre>
<p>This will start Redis and your Go app together. You can split the subscriber and publisher logic into separate services if needed.</p>
<blockquote>
<p>Make sure your Go code connects to Redis using&nbsp;redis:6379&nbsp;since it's the internal hostname within Docker Compose.</p>
</blockquote>
<h2>Best Practices</h2>
<ul>
<li>Use&nbsp;<code>context.WithCancel()</code>&nbsp;for better control over long-running subscriptions.</li>
<li>Handle reconnection and retries gracefully.</li>
<li>Avoid using Redis Pub/Sub for mission-critical messaging needs&mdash;consider Redis Streams or Kafka for persistence.</li>
</ul>
<p><em>&gt;&gt; Explore more: </em><em>Top 10 <a href="https://reliasoftware.com/blog/popular-nosql-databases">Most Popular NoSQL Databases</a> for Developers</em></p>
<h2>Conclusion</h2>
<p>With just a few lines of Go and Redis, you can set up a powerful real-time messaging system. Redis Pub/Sub is a great starting point for building lightweight features such as chat systems, notifications, and live updates. For more scalable and persistent systems, consider Redis Streams or a dedicated message broker.</p>
<p style="text-align: right;"><em>&gt;&gt;&gt; Follow and Contact&nbsp;<a href="https://reliasoftware.com/">Relia Software</a> for more information!</em></p>

<p>Pub/Sub (Publish/Subscribe) is a messaging pattern where the sender (publisher) doesn't send messages directly to specific receivers, messages are categorized into channels.</p>

Implementing Pub/Sub in Go with Redis for Real-Time Apps

Pub/Sub in Go with Redis for Real-Time Apps

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Build-Operate-Transfer (BOT) Services

The Build-Operate-Transfer model (BOT model) lets you stay competitive and successful in the market. Your ODC team should be reliable to work with.

Build-Operate-Transfer (BOT) Services | Relia Software

Software Development Outsourcing Services

At Relia, we've spent over a decade cultivating a reputation for excellence in outsourced software development. Our weapon is a dream team of skilled developers.

Software Development Outsourcing Company | Relia Software

Software Quality Assurance & Testing Services

Relia Software is a dedicated Software QA & Testing Services provider with a proven track record of ensuring exceptional quality in our clients' applications.

Software Quality Assurance & Testing Services | Relia Software

<p dir="ltr">Website is not only a digital brochure, but also the heart of modern businesses. Relia Software understands the critical role of web applications in connecting you to your customers and achieving your goals.&nbsp;</p>
<p dir="ltr">That's why we're your one-stop shop for web app development. Whether you need a custom application or a streamlined web presence, we have the expertise to deliver.&nbsp;</p>
<p dir="ltr">Don't settle for a website gathering dust &ndash; Let Relia turn your vision into a vibrant digital space, converting browsers into brand loyalists.</p>

<p>We build powerful web apps that connect you with customers, drive results, and launch your digital strategy into overdrive.</p>

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<span>Web App</span> Development

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Custom Web App Development Services

Relia Software is the top web app development company. We offer great services for building robust web applications. Check out for our detailed services here!

Custom Web App Development Company | Relia Software

Ruby On Rails (RoR) Development Services

Relia Software develops Ruby On Rails custom web applications using cutting-edge custom setups and pre-designed technologies. Contact us!

Ruby On Rails (RoR) Development Company | Relia Software

.NET Development Services

Relia Software - Leading Dot Net Development Company in the USA & Vietnam. Offers the best .net development services. Hire our top Dot Net Developers!

.NET Development Company | .Net Services | Relia Software

NEXT.JS Development Services

Relia Software is your one-stop shop for powerful Next.js development services. Our elite Next.js developers craft web apps that propel your business forward.

Next.js Development Company | Relia Software

Angular Development Services

Relia Software is a top software development company in Vietnam with recognized Angular expertise. We use Angular to deliver innovative products for businesses.

Angular Development Company | Relia Software

Golang Development Services

Relia is a reputed Golang Development Company that promises to ensure a scalable, sound and user-friendly development of your application with quality and performance guaranteed.

Golang Development Company | Relia Software

Node.js Development Services

Relia is the best Node.js development company in Vietnam. Learn about our expertise, custom solutions, full-cycle development services, and more. Transform your web development with our top-notch Node.js services.

Node.js Development Services | Relia Software

React Development Services

Relia Software is a leading ReactJS Development Company based in the USA & Vietnam offers the best react development services. Hire Top ReactJS Developers!

React.js Development Company | Hire Top React.js Developers

Python App Development Services

Relia Software boasts over 10 years of combined experience and a proven track record of delivering a wide range of successful Python projects for clients worldwide.

Solutions We Provide

Articles by Nguyễn Đình Khánh Nguyên