Quick Summary:

Golang is a widely used language in cloud-based and server-side apps. Artificial intelligence, Machine learning, and data science are some of the top-most growing industries, and you already know that Golang is a highly preferred programming language to build such applications. This blog post contains sure shot tips for Golang performance optimization.


We are here with the most awaited patterns for your application to improve Golang Performance. Everyone wants a speedy app (a user wants speedy delivery & A developer wants fast performance), whereas an entrepreneur wants both!

The reasons may be different, but the need for Golang optimization is the same. You have chosen Go for your business application that proves that you are already on the right path. However, you need to improve the speed and performance of your Go application to make it more accessible from the user’s point of view. There will be two primary reasons you want to optimize your Golang application. Either for resource efficiency or for improvising the operation latency.

Your application should be such that it does not require so many resources that it keeps on waiting for the operation. On the other hand, your Golang application is too complicated that to execute one of its tasks, it has to depend on another, and in this manner, it becomes a dead-end loop of dependencies.

Proven and Tested Golang Performance Tips

Golang performance tips

Resource Efficiency Optimization

Product owners can improve their app performance by optimizing resource utilization. Some parts of your program demand more resources than others, and you need to find out such red spots of your application program. It can be CPU, bandwidth, or memory.

Golang Latency Optimization

Here, you have to identify the bottlenecks of your program. The goal is to improve Go performance optimization in a particular function’s latency. The Golang latency is automatically enhanced as you improve your program’s resource efficiency. But, on the contrary, improving latency may, in turn, demand increased consumption of resources. However, you have to be conscious of both- program bottlenecks and hot spots to work on them simultaneously.

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Algorithm Efficiency

A program has several ways of varying magnitudes to execute the same operation. You would gain maximum performance in your application by implementing algorithm optimization. Continue reading our blog to meet with and overcome the above three (latency, resource, and algorithm) efficiencies in your Golang application. It is a curated list made with the help of our expert Go developers.

As you hire Golang developer from us, you will get all the expertise you need to build an application for your users.Bacancy being the full-stack Go development company assure you that our dedicated Go developers can independently look after the A-to-Z of your Golang application.

Check Out Our Golang Technical Stack:

Golang Technical Stack

With this Go tech-stack, drive your growth along with customer satisfaction.

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Go Vs Python For Machine Learning

Golang Application Performance Patterns

To improvise the speed of your Golang application, you need to use third-party tools and built-in packages for optimization. Your program compiler can rarely optimize your Go program code on its own. Hence we have collected these best-practice recommendations that set benchmarks in the industry. Each tip would be useful because it depends on your application type and requirement. Depending on your app logic and load, you can choose from these Golang performance patterns.

Limit the usage of Goroutines

The feature that makes Golang a valuable programming language is using Goroutines, which also makes it Cost efficient.

However, goroutines do cost a significant memory footprint, which affects your app performance. Generally, Go programmers create infinite goroutines without calculating or knowing when they will exit. Hence, we recommend you to start a goroutine only if you know when it exists.

Parallelize CPU work

Synchronization takes a considerable amount of time, and when you can parallelize your work by utilizing available cores, that will surely optimize the performance of your Go application. This step will speed up your app execution linearly.

Make I/O operations asynchronous

The most common bottleneck is network transactions and files input/output executions. So, to optimize your Golang application performance, you can make independent I/O operations asynchronous. This way, such operations run in parallel and improve your downstream latency. You can use sync.WaitGroup to synchronize multiple I/O operations.

Keep a watch on your timeouts

I/O operations usually take loads of time, which leads to latency. To overcome this, you should avoid starting any I/O task without knowing the time it shall consume. It would help if you started using SetDeadline, SetReadDeadline, and SetWriteDeadline before setting a timeout on each network request.

Do not allocate memory in hot spots

Whenever you create new objects, the system consumes memory and CPU cycles, increasing latency. It keeps the garbage collector occupied, which is not a good sign, especially in hot spots. Hence, whenever possible, you should reuse objects and use sync.Pool.

Use lock-free algorithms

It would be best to avoid synchronization because it leads to racing situations and contentions. To improve efficiency and latency, you should prevent mutex. Many lock-free solutions are available for some common data structures.

Favor read-only locks

As you imply full-locks to heavy objects that are synchronized, your goroutines have to wait a long time. To avoid such trouble, you should make use of read-only locks.

Minimize or avoid using ‘cgo’

Go programs can call into C libraries using cgo. However, the cgo function has a high overhead. It consumes thread during operation, just like blocking I/O. You should not call a C code in between a tight loop. For the best performance of your Golang application, we suggest not using cgo.

Use buffered I/O

Accessing singular objects costs disk operations, which ruins the program efficiency. Using buffered input/output will considerably improve your app speed because it will have to read and write bigger chunks of data.

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Use Binary over

Text formats Both binary and text formats are valid in PostgreSQL. However, binary is much faster than the text format. While using the binary form, the processing is only required when converting from network byte order. Thus, for the PostgreSQL server, the binary format is more efficient for transmission than the text format.

Prefer StringBuffer or StringBuilder

The system uses the ‘+’ and ‘+=’ operators to allocate a new string on every assignment. To overcome this inefficiency, you should use StringBuffer and StringBuilder for the speedy execution of your program.

Use regular expressions

Some programs might be using the same regular expression several times, and if you compile the regular expression before every use, your app will be inefficient. Thus, for repeated matching, you should use compiled regular expressions.

Preallocate slices

The Go language automatically allocates memory when your demand reaches the current capacity. During re-allocation, the system gives double memory when the array moves to a new location. To avoid this memory wastage and unnecessary garbage collection, you should preallocate the slices whenever possible.

Go for Protocol Buffers and MessagePack

JSON and Gob are somewhat reluctant because they use reflection. Instead, it would be best to use Protocol Buffers and MessagePack.

Use int, not string for maps

If your application uses Maps, you should use int keys over a string. Tailor your business needs with the top-notch Golang development company.

Key Take Away On Golang Performance Tuning

I hope your purpose of landing on this in-detail Go performance guide has served. App performance and reliability are equally important. Give your preference to what your app users need. Follow the above mentioned tips to uplift your golang app performance by optimizing your app with customized functionalities. Outsource your Golang performance optimization to the Golang application development company like Bacancy be assured that our Golang developer will fulfill all your custom business requirements.

Frequently Asked Questions (FAQs)

Golang is one of the most preferred programming languages in 2023 for back-end development. Golang is better than other programs, more lightweight and faster in comparison to other languages.

The best way to improve the performance of your Golang application is to use multiple cores of CPU. Goroutines are the best feature to create concurrency easily in Golang App.

Golang is preferred by every type of business, as Golang is known for its scalability and performance. From startups and mid-level businesses every type of business can choose Golang at a minimal cost. At the same time, large businesses prefer using Golang to handle their big complex projects.

Golang is the fastest programming language in comparison to other languages as it provides faster performance and compiling speed.

Golang is a programming language used for building networked and distributed services, which is very helpful in the Blockchain industry. Ethereum is one of the most popular that is built using Golang.

Are you looking for sure-shot ways to speed up Golang app performance?

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