Glossary term
What is LB (Load Balancer)?
LB stands for Load Balancer.
Spreads traffic across servers. Example: 3 app servers behind one address.
Learn it properly · System DesignLesson 12: Load Balancers: L4 vs L7 and Balancing AlgorithmsOne address, many servers, and one of them just crashed at 2 AM. How load balancers spread traffic, L4 vs L7, the balancing algorithms and when each wins, and why a “deep” health check can take everything down at once.