The Backend Engineering Show with Hussein Nas...

I wrote a new book that has been in the works for years. It is called Root Cause, and it is for those who enjoy the art of backend engineering.Early in my career, 20 years ago, I built backend and database applications without fully grasping their inner mechanics. Performance iss ...  Show more

In this video I introduce 5 different design patterns for building backend applications. Each mode explains how a socket listener is established, a connections are established and how threads and connections are managed to read, write and process requests. 

Page tables provide the mapping between virtual memory and physical memory for each process. This means it needs to be as efficient and as fast as possible. I explore the inner workings of page tables in this episode.0:00 Intro2:00 Virtual Memory ⁃ ⁃ 8:00 MMU10:00 Page Tables ⁃ ⁃ ...  Show more

Page faults occurs when the process tries to access a memory that isn’t backed by a physical page kernel raises a fault which loads a page. It happens on first access, stack expansion, COW, swap and much more. However it comes with a cost. 

In this episode o ...

On October 19 2025 AWS experienced an outage that lasted over a day, 10 days later we finally got the root cause analysis and we know exactly what caused the DNS to fail0:00 Summary 5:30 How did Dynamo lost its DNS?13:41 EC2 Errors 16:16 Network Load Balancer ErrorsRCA here https ...  Show more