What Is a Server, Really? (Most Developers Get This Wrong) | Explained for System Design Interviews
Ever wondered what a server actually is?
Most developers deploy applications to servers every day, but very few can explain what a server is physically and how it works under the hood.
In this System Design Fundamentals lesson, you'll learn:
✅ What a server really is
✅ Why a server is just a computer
✅ The 4 core resources every server has
CPU
RAM
Disk
Network
✅ Why servers become slow
✅ CPU-bound vs IO-bound systems
✅ Why caching exists
✅ RAM vs SSD vs HDD speed differences
✅ How server resources affect scaling decisions
✅ Common System Design interview questions about servers
Understanding servers is one of the most important foundations of System Design. Once you understand CPU, memory, storage, and networking, concepts like load balancing, caching, databases, microservices, vertical scaling, and horizontal scaling become much easier.
Whether you're preparing for:
System Design Interviews
Software Engineering Interviews
SDE Interviews
Backend Engineering Roles
Cloud Engineering Interviews
this lesson will help you build a strong foundation.
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