How to Optimize and Visualize Your Security Groups (Jump Host example)

In this post we review how to understand and visualize AWS security groups, and how to use it for identifing security vulnerabilities. What are AWS Security Groups? AWS Security Groups acts as a virtual firewall for your instance to control inbound and outbound … Continue Reading

The cost of SELECT * (MongoDB example)

In our previous post Optimizing your AWS Availability-Zone Architecture  we saw how a configuration change saved 60% ($8,000 / month) and reduce latencies from 20ms to 1ms In this post we will show  how a simple change in the code … Continue Reading