Golang Packages: Enhance Your Programming Prowess

Zoltan Fehervari

October 6, 2023

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Golang packages: the backbone of modern software development. Explore the essence, popular libraries, and frameworks, and understand how Go empowers fintech platforms.


One of the primary tools at the heart of the Go programming language, popularly known as Golang, is its package system. This article will guide you through the essence of Golang packages and how they can elevate your Go development game.

Understanding Golang Packages

Golang, often just called Go, is an open-source programming language designed for simplicity and efficiency. But what makes Go stand out is its package system. In Go, everything is organized into packages. A package in Go is a modular unit of source code that can be reused across multiple applications. 

It provides a specific functionality, encapsulates code, and ensures that variables, structures, and functions have unique namespaces, promoting clean code organization, reducing naming collisions, and enhancing code reusability.

For instance, when creating even a basic Go program, you're already using packages.

The common fmt package, which facilitates formatted I/O operations, is but one example. By embracing a modular approach, Go ensures lean application development, where you only incorporate the packages you require, streamlining the end product.

Go icon - Bluebird

Best Practices for Using Golang Packages

While the Go package system is powerful and intuitive, leveraging its full potential requires adherence to certain best practices:


The What: In the world of software development, change is inevitable. Libraries evolve, new features get added, and old ones get deprecated. Versioning helps keep track of these changes and ensures compatibility.

The How: Go introduced its own dependency management system known as Go Modules. With Go Modules, developers can specify the versions of the packages their application depends on, ensuring reproducible builds and easing dependency management.

Why it Matters: Using Go Modules, you can ensure that your application won't break due to updates in dependencies. It promotes consistency and stability across the development lifecycle.


The What: Good code explains how it works, but great code also tells why it exists. This 'why' is often captured in documentation.

The How: Go provides built-in tools for generating package documentation, such as godoc

Why it Matters: Documenting packages aids other developers in understanding, using, and potentially contributing to the codebase, fostering community-driven growth and reducing onboarding time for new team members.

Test Coverage

The What: In the dynamic world of software, ensuring that your code behaves as expected is paramount. Tests serve as a safety net.

The How: Go has a robust built-in testing framework. The got test command allows you to run tests, and tools like go test -cover help gauge how much of your code is covered by tests.

Why it Matters: Tests ensure reliability, ease refactoring fears, and serve as documentation for expected behavior. Regular testing can save countless hours of debugging in the long run.

IT department security - Bluebird

Security in Golang

The digital realm of fintech demands a staunch focus on security. Thankfully, Go's standard library and ecosystem come equipped with tools and practices to ensure secure coding:

Standard Library Tools

The What: Go's standard library is packed with tools designed for secure coding.

The How: Libraries such as crypto provide robust encryption techniques, while net/http ensures secure web communications with features like HTTPS.

Why it Matters: These tools, backed by the community and frequently updated, serve as a foundation for building secure Go applications right out of the box.

Third-party Security Packages

The What: Beyond the standard library, the Go community has built tools to identify and mitigate security flaws.

The How: Packages like github.com/securego/gosec analyze Go code for common security pitfalls, offering feedback and suggestions for secure coding.

Why it Matters: With third-party security tools, developers get an extra layer of protection, ensuring that they adhere to best security practices and standards.

Popular Golang Packages and Libraries


A standard library offering HTTP client and server implementations, pivotal for creating web applications and services in Go.


It gives a platform-independent interface to OS functionalities, such as managing files and reading environment variables.


Vital for today's web apps, it provides functions to encode and decode Go data structures to and from JSON.


A general interface for interacting with SQL databases, enabling connection, query, and data management.

github.com/gorilla/mux: A robust URL router and dispatcher for creating web applications with dynamic URL routes.

Golang packages - Bluebird

Top Golang Frameworks

Frameworks in Go, often built upon multiple packages, provide the scaffolding required to build applications with specific functionalities. Some prominent frameworks include:


A swift web framework ideal for building high-performance RESTful services.


An extensible, high-performance web framework with an extensive HTTP router and middleware capabilities.


A comprehensive framework offering everything from ORM to session handling, akin to Python's Django framework.


The official Go implementation for gRPC, using HTTP/2 to transport protocol buffers.


Tailored for rapid application development, it reduces setup overhead, emphasizing coding.


A popular ORM library for Go, gorm simplifies database interactions with a consistent API.

Golang developers - Bluebird

How Go Frameworks Empower Fintech

Microservices with Go kit

The financial sector has seen a revolutionary change with the introduction of digital platforms, requiring scalable and adaptable systems to handle vast amounts of data and transactions. Enter microservices – a design approach where applications are broken down into smaller, independent services that communicate over the web. The modular and distributed nature of fintech applications aligns perfectly with the microservices paradigm.

Go kit emerges as a pivotal tool in this scenario. Tailored for creating, building, and maintaining microservices, Go kit ensures that fintech applications are not only scalable but also robust and resilient to failures. By adopting Go kit, fintech companies can efficiently manage individual services, resulting in quicker updates, better fault isolation, and enhanced system reliability.

RESTful APIs with Gin

As fintech platforms expand, they integrate more services – from payment gateways to data analytics. These integrations necessitate a robust communication system, often facilitated through APIs. Gin, a high-performance web framework, is finely tuned to build RESTful APIs.

It ensures not just efficient construction but also secure and seamless communication between various components of a fintech application. With its lightweight nature and extensive middleware support, Gin simplifies the complex tasks, offering fintech developers a streamlined approach to integrating multiple services.

Rapid Development with Revel

Time is money, and in the cut-throat world of fintech, this adage holds even more truth. With technology and user needs constantly evolving, fintech platforms need to adapt quickly. Revel, a high-productivity Go web framework, is designed for just that. It ensures that fintech applications undergo swift development cycles, allowing products to hit the market at an accelerated pace.

Revel's comprehensive toolset, from hot code reloading to a vast range of plugins, empowers developers to innovate without getting bogged down by technical intricacies.

interviews to hire remote developers for fintech -bluebird

Developers who know Golang packages

For fintech companies looking to harness the power of Go frameworks, finding skilled Golang developers becomes paramount. Staff augmentation offers an ideal solution. By opting for IT staff augmentation, fintech firms can quickly onboard expert Golang developers tailored to their project needs.


Because, this not only ensures that they get top-tier talent but also offers flexibility, scalability, and cost-effectiveness. With the rapid evolution of fintech platforms, having a nimble team that can adapt and innovate becomes a critical competitive advantage.

Staff augmentation provides just that edge – access to specialized skills, quick scaling of teams, and the ability to pivot as per market demands. In essence, for fintech companies aiming to lead the market, augmenting their teams with expert Golang developers is not just a choice; it's a strategic imperative.

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