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Does Go Have a True \'Infinite\' Call Stack?

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Nov 27, 2024 am 10:12 AM

Does Go Have a True

Go's "Infinite" Call Stack

Question:

Does Go have an equivalent to Node.JS's "maximum call stack size"?

Answer:

Yes, Go has a maximum call stack size, but unlike Node.JS, it's not a fixed limit. In Go, goroutines dynamically grow their stack size as needed. This gives the impression of an "infinite" call stack, but it's still subject to the underlying stack memory limit.

Question:

What is the maximum call stack size in Go?

Answer:

The maximum call stack size in Go is determined by the runtime environment. It's usually hundreds of MBs or even a GB. The Go Playground has a limit of 250MB, while on a typical Linux machine, it's around 1 GB.

Question:

Is using recursive code with a potentially large number of calls an anti-pattern?

Answer:

Using recursive code with a large number of calls can lead to stack exhaustion. It's not a recommended practice unless you're dealing with a problem that genuinely requires recursion. Consider using iteration instead, or explore other design patterns that don't rely on deep nesting.

Additional Notes:

The run function in the provided example will eventually fail with a stack overflow when the recursion depth exceeds the stack memory limit.
Dave Cheney provides an excellent resource on this topic: "Why is a Goroutine's stack Infinite?".

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