Entries by Nana Essandoh

Day 13: AWS Solutions Architect Professional Prep — Serverless architectures

Today’s lesson was all about Serverless architectures. Serverless is a method where you simply write your code and let Amazon Web Services (AWS) handle all the maintenance, scaling, and heavy lifting automatically. With serverless you can focus purely on creating amazing features and not managing infrastructure. You don’t have to manage complicated servers and pay […]

Day 12: AWS Solutions Architect Professional Prep – Caching and Performance Optimization

Have you ever slammed your laptop shut after waiting five seconds for a webpage to load?  Latency, indeed, kills user experience. Worse yet, it can translate into overloaded databases and skyrocketing operational costs. Thankfully, there’s a solution for this: Caching and Content Delivery Networks (CDNs).Caching means keeping frequently used data closer to the user or […]

Day 7: AWS Solutions Architect Professional Prep — Auto Scaling & High Availability Patterns

How do major online services stay fast even when millions of people log in at once? How do they survive a major regional power outage without skipping a beat? Today’s lesson examines two foundational architectural principles that make it possible, namely, Auto Scaling and High Availability The key questions I examined today were: What are […]

Day 6 AWS Solutions Architect Exam Prep: Advanced EC2 Design — Placement Groups, Instance Types, AMIs, and Spot Instances

Advanced EC2 Design — Placement Groups, Instance Types, AMIs, and Spot Instances Today I covered the foundational pillars of advanced EC2 design. I reviewed the answers to the following questions: 1. How do I choose the single best type of machine for my unique job? Choosing the best type of machine or instance type is […]