Go: Goroutine Leak Detector

Go: Goroutine Leak Detector

A goroutine leak can easily be detected via an APM that monitors the number of live goroutines. Here is an example from NewRelic of a graph that monitors the goroutines.

A goroutine leak can easily be detected via an APM that monitors the number of live goroutines. Here is an example from NewRelic of a graph that monitors the goroutines:

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A leak would lead to a continuous increase of this number until the server crashes. However, there are ways to prevent leaks even before the code is deployed.

Leak detection

The Go team at Uber, which is very active on Github, made their goroutine leak detector, a tool that aims to be integrated with the unit tests. This package actually monitors the goroutines that leak the current piece of code tested. Here is an example of a function with a goroutine leak:

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And here is the test for that function:

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golang go

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