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How Load Balancing Works - Round Robin, Least Connections & More (System

How do systems like Google and Amazon handle millions of users simultaneously without crashing a single server? Load balancing is the answer.

1 min read

How do systems like Google and Amazon handle millions of users simultaneously without crashing a single server? Load balancing is the answer.

What’s in the video (7m 26s)

  • 0:00 — Introduction to Load Balancing
  • 1:03 — What is Single Point of Failure (SPOF)?
  • 1:21 — What is Load Balancer (LB)?
  • 1:56 — Key Characteristics of a Load Balancer (LB)
  • 2:15 — Rules or Algorithms of Load Balancers
  • 2:50 — Round Robin Method in Load Balancing
  • 3:32 — Weighted Round Robin Method in Load Balancing
  • 4:07 — Least Connections or Least Respose Time or Least Bandwidth - Other Load Balancing Methods
  • 4:24 — IP Hash Method in Load Balancing
  • 5:02 — How to Achieve Fault Tolerance using Load Balancing?
  • 5:47 — What is High Availability?
  • 6:04 — Horizontal Scalability (Scaling Out) vs Vertical Scalability (Scaling Up)
  • 6:35 — Key Takeaways of Load Balancing

Resources

For more in this series, visit the #system-design tag page or jump to the channel uploads list for everything else.

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