Learn Echo - Prerequisite Skills & Environment Setup

#Introduction

Welcome to the Learn Echo series! This series will take you from mastering Echo — a fast Go web framework built on top of the standard net/http package, used to build REST APIs, microservices, and web services — from the fundamentals all the way to production readiness. There are 23 episodes in total, organized into six phases.

But before writing your first handler, there are some basic skills and software you must have. Why are these prerequisites important? Because Echo is not a magic framework: it's a thin layer on top of net/http that depends on your understanding of HTTP, structs, interfaces, and idiomatic error handling in Go. Without that foundation, the code you write will feel like a black box.

Episode 0 is your roadmap: we'll make sure your basic skills are in place, set up the Go toolchain, create a new project, install Echo v5, and do the first verification. Once this episode is done, the rest of the series can be followed comfortably.

#Basic Skills You Must Master

#The Go Language and Toolchain

Echo is a Go framework, so you need to be comfortable with the latest stable version of the Go language. Make sure basic syntax like structs, interfaces, slices, maps, and error handling are second nature. Most importantly: understand how go.mod works, the concept of modules, and the habit of formatting code with gofmt.

Verify your toolchain first:

go version
go env GOPATH

The output of go version must show a Go version that is still officially supported. The command go env GOPATH will show the location of the Go working directory, where all modules and binaries are installed.

#HTTP and REST API Concepts

Echo returns full control over HTTP to you. Master the HTTP methods (GET, POST, PUT, DELETE, PATCH), the difference between status codes (200, 201, 400, 401, 404, 500), the structure of headers and body, and the principles of REST APIs: resources as nouns, meaningful status codes, and consistent JSON payloads.

#Struct Tags, Interfaces, and Error Handling

Echo handlers work with structs and interfaces all the time. Understand how struct tags like json and form work, because those tags are what the binding mechanism uses in episode 5. Also understand idiomatic Go error handling — if err != nil — because in Echo, handlers return an error and the framework handles it.

#Software You Need to Prepare

#Editor and Go Extension

VS Code with the official Go extension is the most comfortable choice. Enable gopls for autocomplete, go-to-definition, and automatic diagnostics:

go install golang.org/x/tools/gopls@latest

Make sure go install runs with a GOBIN that is registered in your PATH, so that commands like gopls can be accessed from the terminal.

#API Client and Git

Prepare an API client to test your endpoints: curl for the terminal, or Bruno and Postman for a graphical interface. Also set up Git for version control, because every Go project in this series will be initialized as a repository.

#Setting Up the Go Project

#Module Initialization

Start by creating a project directory and initializing a Go module. The module name is up to you, but get into the habit of using a meaningful name:

mkdir belajar-echo
cd belajar-echo
go mod init belajar-echo

The command go mod init belajar-echo will create the go.mod file. This file is the center of Go dependency management, replacing the old GOPATH.

#Installing Echo v5

With the module ready, install Echo. This series uses Echo v5, the latest release line since January 2026:

go get github.com/labstack/echo/v5@latest

The command go get github.com/labstack/echo/v5@latest adds Echo v5 to go.mod along with all its dependencies such as github.com/labstack/gommon and the internal router.

#Verifying the Installation

Make sure the dependencies are installed correctly and the project is clean of static issues:

go list -m github.com/labstack/echo/v5
go vet ./...

The command go list -m github.com/labstack/echo/v5 shows the exact version of Echo being used. go vet checks your code for suspicious errors before you write any handlers.

#Database and Supporting Infrastructure

Some episodes in phases 3 and 4 require PostgreSQL and Redis. Set up Docker now so your environment stays consistent across machines:

docker --version

For this series, Echo and Go are mandatory; Docker, PostgreSQL, and Redis are supporting tools and are only used starting from episode 9. No need to install everything today.

#Summary of Prerequisites to Meet

Here's a summary of the prerequisites you set up in episode 0:

• Go stable installed and verified via go version.
• HTTP and REST API concepts understood thoroughly.
• Struct tags, interfaces, and error handling familiar in practice.
• Go module project working with go mod init.
• Echo v5 installed and verified via go list -m.
• Docker prepared for the database needs in later episodes.

If anything is missing, stop and complete it before moving on. A strong foundation will make the next 22 episodes feel much lighter.

#Closing

In episode 0 you have laid the groundwork for the entire series: understanding the basic Go and HTTP skills, setting up the toolchain and editor, creating your first module project, installing Echo v5, and verifying that everything works.

Key takeaways:

• Echo is built on top of net/http, so master HTTP and REST first.
• Go skills required: structs, struct tags, interfaces, and idiomatic error handling.
• A Go project always starts with go mod init.
• Echo v5 is installed via go get github.com/labstack/echo/v5@latest.
• Verify the installation with go list -m and go vet.
• Docker is set up for the database needs in later phases.

In the next episode we'll discuss the history, background, and why you need Echo — from the evolution of the labstack project since 2015, the birth of the radix tree router, to the problems Echo solves compared to other approaches like Gin, Fiber, and plain net/http. Make sure your environment is ready, because the Learn Echo journey has just begun!