ℹ️ This article is based on Go 1.18. In a previous article, we discussed the Slowloris attack — a DoS attack that aims to overwhelm a server by keeping open lots of connections — and how to mitigate it. The RUDY (R-U-Dead-Yet?) is a similar attack but uses the body…

ℹ️ This article is based on Go 1.18. In cybersecurity, the most efficient way to ensure the security of the product we are building is to try to compromise it as an attacker would do. Penetration testing is a great way to achieve that, but it does not mean that…

Panics in Go are triggered when the program cannot handle an error properly, such as invalid memory access. It can also be triggered by the developer if the error is unexpected and there is no other way to deal with it. …

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:

ℹ️ This article is based on Go 1.14. The Go standard library dedicates a thread to watch after your application and help with bottlenecks your program could face. This thread, called sysmon, stands for system monitor, is not linked to any P in the G,M,P model, meaning it is not…

Error management in Go is always prone to debate and a recurrent topic in the annual survey about the biggest challenges developers are facing when using Go. However, when it comes to dealing with errors in a concurrent environment or combining multiple errors for the same goroutine, Go provides great…

ℹ️ This article is based on Go 1.13. Go provides built-in functions to help the developers working with channels, slices, or maps. Some of them have a proper internal implementation, like make(), and some do not have any implementation and are managed by the compiler. …

ℹ️ This article is based on Go 1.13. The escape analysis one of the phases of the Go compiler. It analyses the source code and determines what variables should be allocated on the stack and which ones should escape to the heap. Static analysis Go statically defines what should be heap or…

ℹ️ This article is based on Go 1.14. Go provides memory synchronization mechanisms such as channel or mutex that help to solve different issues. In the case of shared memory, mutex protects the memory against data races. However, although two mutexes exist, Go also provides atomic memory primitives via the…