Memory and Runtime

Go programs are lightweight and efficient, thanks to the Go Runtime that is bundled into every executable binary.

The Go Runtime

The runtime is a small amount of extra code that handles essential tasks:

• Garbage Collection (GC): Automatically identifies and frees up memory that is no longer being used by your program.
• Scheduling: Manages how your code runs across different CPU cores.

Memory Comparison

• Java: Uses a Virtual Machine (JVM) and typically consumes significantly more memory than Go.
• Go: Offers a smaller memory footprint while still providing the convenience of automatic memory management.
• Rust/C: Can use even less memory than Go, but require the developer to manage memory manually or through strict ownership rules.

Go hits a “sweet spot” by being nearly as fast as C/Rust while being much easier to write because of its automatic garbage collection.