networking

How load balancers spread traffic across servers, what L4 and L7 actually mean, the routing algorithms in real use, and the failure modes you need to design around.

HTTP status codes are essential for effective communication between clients and servers on the web. This lesson breaks down each class of status codes (1xx, 2xx, 3xx, 4xx, 5xx), explains their meaning, and provides practical guidance on when to use them in your applications.