Rust vs. Go: A Deep Dive into Memory Management

LTM LABS PVT LTD
4 min readSep 4, 2024

Introduction

Rust and Go (Golang) are two of the most popular programming languages today, known for their performance, concurrency, and safety. However, they take different approaches to memory management, a crucial aspect that often dictates performance and safety. In this article, we’ll explore the memory management models of Rust and Go and argue why Rust’s approach might be more suitable for certain use cases.

Memory Management in Go

Go is designed to be simple and efficient, with a focus on concurrency. One of the ways it achieves this simplicity is through garbage collection (GC). Go’s runtime automatically manages memory allocation and deallocation, which makes it easier to write programs without worrying about memory leaks or dangling pointers.

package main

import "fmt"

func main() {
numbers := make([]int, 0)
for i := 0; i < 100; i++ {
numbers = append(numbers, i)
}
fmt.Println(numbers)
}

In this Go code, we allocate a slice (numbers) and populate it with integers. The Go runtime automatically handles memory allocation and deallocation. While this is convenient, it comes at a cost: the garbage collector must periodically pause the execution to free up memory that is no longer in use.

Pros of Go’s Memory Management

  • Ease of Use: The automatic memory management abstracts away the complexity, allowing developers to focus on…

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