When Go is the right choice for a backend (and when PHP is)

We write both Go and PHP every week. Our licence server and the core of Akantio POS are written in Go; the WordPress plugin that connects it to WooCommerce, and WooCommerce itself, are PHP. So this is not a language war. Both are good choices for business backends, for different reasons.

The short version

• Choose PHP when the work lives in the PHP ecosystem (WordPress, WooCommerce, Laravel, Symfony), when the application is a classic request–response web app, or when the team that will maintain it knows PHP.
• Choose Go when you need long-running services, high concurrency, background workers, low and predictable resource use, or a single binary that is easy to deploy and distribute.

The longer version depends on four things.

1. The shape of the workload

PHP's classic model is shared-nothing: each request starts fresh, runs, and throws everything away. That makes PHP applications easy to reason about and hard to break with memory leaks or shared state. It fits web pages, admin panels, CRUD APIs and e-commerce very well.

Go programs are long-running processes. Goroutines make it natural to handle many connections at once, run background jobs in the same process, keep caches in memory and stream data. That fits API gateways, sync services, webhook processors, real-time features and anything that talks to many external systems concurrently.

If your backend is mostly "read a request, query a database, render a response", PHP does that well. If it is "keep thousands of connections open and process a queue of events", Go is the more natural tool.

2. Ecosystem and speed of building

PHP's ecosystem for web applications is mature and large. Laravel and Symfony give you authentication, queues, mail, ORM, migrations and an admin UI in days. If the project is close to what those frameworks do, PHP gets you there faster.

Go's standard library is strong (HTTP server, JSON, crypto, testing are built in), and libraries for databases, queues and cloud services are solid. But Go favours explicit code over framework magic, so you assemble more yourself. That is slower at the start and often clearer later.

3. Deployment and operations

A Go service compiles to a single static binary. Deploying it is copying one file, or a small container image. It starts in milliseconds and its memory use is predictable. That simplicity is why we build desktop software like Akantio POS on Go: one executable, no runtime to install.

A PHP application needs PHP, extensions, a web server and PHP-FPM, configured correctly. This is a solved problem, and almost every host supports it, but there are more moving parts, and more configuration to keep consistent between environments.

4. People and maintenance

The best language is the one your team can maintain after the first developer leaves. PHP developers are widely available, especially around WordPress and Laravel. Go developers are fewer but the language is small, so experienced developers from other languages become productive in it quickly.

Go's static typing and compiler catch whole classes of errors before production. Modern PHP closes much of that gap: typed properties, enums and strict types, plus static analysers like PHPStan. A well-maintained PHP 8 codebase is far from the PHP of fifteen years ago.

Mixing them

Many businesses end up with both, and that is fine. A common pattern we build: the shop stays on WooCommerce (PHP), and a Go service next to it handles integrations, synchronisation and heavy background work through the WooCommerce REST API. Each part uses the language that suits it, and they talk through a documented API contract.

Our advice

Do not choose a language for performance benchmarks alone. Most business applications are limited by database queries and external APIs, not by language speed. Choose by workload, ecosystem and who will maintain it. If you are unsure, our custom software service starts with exactly that conversation.