With the help of its predecessors, C, PHP, and Python, Golang was created to be a simple and generally used programming language. In the context of business, it’s said to be an ideal solution, yet the issue arises: “Does it work?”

We’ve compiled a list of Golang use cases from various industries.

Fintech applications of Golang

Monzo is powered by Go on the creation of microservices and tools.

A financial services marketplace and online bank platform founded in 2015 offers a variety of products and services. The bank has been able to gain the trust and admiration of millions of clients thanks to a steady stream of new services, quick access to funds, and excellent technical support.

Monzo has used microservices from the beginning, while other startups often begin with monolithic systems. In reality, Monzo employs more than 1600 microservices. The bank chose Go because its numerous tools, which are unmatched in the development process, are microservice-friendly, performant, and resource-effective. It helped maximize the efficiency of computer resources, reduce lag time, and implement the most effective development strategies.

Solarisbank’s various teams use Go

German financial services firm founded in 2016 has developed an API platform that allows financial institutions to sell their goods through APIs, such as identification, payments, or cards. Several bank teams, including the Data platform, the Core banking, and the Authentication teams, use Golang.

A few comments about what Solarisbank utilizes Go for: pipelines for infrastructure creation, the reversal of authorization/authentication systems, proxies, and protocol-level banking systems development.

Use cases for Golang in payment processing systems

PayPal’s development pace was boosted using Go.

This U.S.-based company administers a payment system that is widely accepted across the globe, making it easy for customers to make online purchases. We’ve all used PayPal at some point to purchase or receive funds from a seller.

As the firm expands, it must stay on top of everything, including its preferred technology. PayPal experimented with a new programming language since its platform is becoming more complex. For both the organization and its customers, speed and reliability are critical. Developer productivity is essential to prevent issues connected to these needs. Programming languages must be simple, quick, and secure simultaneously to be effective. C++, the previous language in use, was effective but also too complex, causing IT engineers’ productivity to decline.

Golang proved the best language for building, testing, and pipeline release in this particular use case. Engineers found a 10% decrease in CPU consumption once PayPal began using it. And after six months of experimenting with Go, the development process was streamlined: programmers no longer needed to spend their time “code fighting,” allowing them to complete jobs more quickly.


American Express streamlined its payment process and achieved excellent results.

American Express is one of the world’s most well-known payment card service providers. For billions of people, the corporation offers a wide range of financial goods and services, including high-availability payments. As the number of transactions per second rises, American Express regularly updates its architecture and operations to keep up with the demand for lightning-fast payments and incentives.

When it comes to programming languages, Golang was an excellent choice because of its simple code, high security, and wide range of new features. In addition to Java, Node.js, and C++, the organization has previously utilized Go. A few engineers floated an idea at the organization to try out Go, so they organized a showdown to see how it compared to the programming languages they had previously used. Go came in the second position in terms of performance, completing 140,000 requests per second, and its toolset and various capabilities looked to be well suited to the company’s objectives.

Go has helped American Express update its payment processing and incentive programs as a fast, scalable, and easy-to-use microservices programming language.

Platforms for streaming audio and video content powered by Golang

Twitch’s favored method is Go for the heavy-duty systems.

Twitch is a video streaming network based in the United States that is mostly used for live-streaming video games and other entertainment material. Every day, the platform deals with the demands of approximately 30,000 users. Twitch hosts over 2 million concurrent video streams and sends over 10 billion messages daily via its chat feature. In addition, the corporation uses web APIs that process around 50,000 queries each second.

Too many individuals rely on Twitch due to its high availability and dependability to switch to another platform because of the lack of unexpected problems with Twitch. Twitch has selected Golang for an astonishing portion of its heavily loaded systems to achieve such astounding results:

  • C++ and Go are used to implement the transcoding system.
  • Most EDGE and distribution code is written in Go, ensuring the finest possible video quality.
  • Chat is written in Go to allow for scalability across several nodes.

With Go’s scalability, simplicity, and strong concurrency, Twitch’s programming language became unsurpassed because of its benefits. In addition, the company’s programmers constructed their own RPC (Remote Procedure Call) framework, allowing Golang backend services to connect effectively.

When it comes to developing specialized YouTube-like video streaming platforms, Surf has its unique tale. This package contains web and mobile applications for a company specializing in high-quality digital products.

Backend At 50 thousand requests per second, the platform was able to earn itself the title of #1 Entertainment App in the App Store because of the platform’s robust admin panel, analytics service, and appealing design.


SoundCloud accelerated its development process tremendously.

When it was first launched in 2007, this website-based online audio distribution network quickly grew to be one of the most well-known and biggest in the world, with users in 190 countries. More than three times the number of songs and 76 million monthly active users set the record for such services.

With Go, SoundCloud has selected an easy-to-learn, powerful programming language that can be used to build, deploy, test rapidly, and roll out new applications. Unit testing and near-real-time static analysis are also performed in Go because of their statically typed and compiled nature.

SoundCloud programmers say that using Go can focus on solving problems rather than on the language itself. They don’t have to spend additional time deciding on a method of code writing since there is typically just one technique to do the task. Even developers who are skeptical of Golang and unwilling to devote much time to learning it may rapidly begin generating simple, understandable code that enables for rapid execution of complex algorithms and procedures. As a result of this, they tend to change their minds. Furthermore, compared to the other languages SoundCloud employs, Go commits from zero to productive are the quickest.

In addition, Soundcloud relies on a number of Golang-based services and repositories. And as a result, the company’s backend developers are rapidly turning to Go for new projects.

Retail applications of Golang

Faster caching service for Allegro

Allegro is one of Europe’s most well-known e-commerce enterprises. More than 135 thousand sellers use it to attract 22 million monthly online consumers and provide them with a wide range of merchandise. Millions of people use the marketplace, and it keeps a lot of information.

Allegro designed a quick cash service with concurrent access to process multiple entries and removed them after a certain time to maintain the system’s dependability under heavy loads. Before Go, the organization utilized Python, Java, and PHP, which were more sophisticated and slower. Using a simple language with fast compilation and efficient memory management, the firm found its needed answer. The longest request that took 2.5 seconds was reduced to 250 ms thanks to the Go language’s FreeCashe function.


MercadoLibre upgraded its software and lowered its resource use.

Mercadolibre is an eCommerce firm that operates auction and online retail platforms. Today, it is one of Latin America’s major organizations in its field, with its headquarters in Buenos Aires.

The number of customers and transactions is continually increasing, new features are always being developed—and the company’s scalability requirements are demanding. Scaling was a real challenge with the old API architecture and stack. In order to take advantage of Go’s simplicity, scalability, and up-to-date tools, Mercadolibre gave it a go. Using this programming language, the organization could upgrade its software and obtain outstanding results in scalability.

For the company’s upcoming demands, Go helped them achieve greater performance, allowing them to handle 10 million requests a minute instead of the current 10 ms. Additionally, they now require 8 times fewer servers, have a 2x reduction in CPU utilization, and save an incredible amount of resources.


Fintech, retail, video streaming, and banking are just some industries that use Golang. Go is a popular choice in the financial sector because of its speed, availability, and ability to develop microservices.

Modernizing payments and incentives, enhancing performance, and improving development efficiency are all possible using Go in the payment processing industry. Cache services creation and request time reduction are some of Golang’s retail applications.

Go is a fantastic match for music and streaming platform development because of its high-loading nature and the speed with which commits may go from zero to productive.

To determine whether Go is a good match for your company, keep in mind that, despite the advantages, development costs aren’t that low. So, this language is best suited for large-scale projects, but if you don’t intend on expanding them, it’s not the ideal option for smaller projects. Using Go for small middleware development or building a POC for investors is a waste of time.