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Visual glossary

What Is Load Balancer in Programming?

Infrastructure that distributes incoming traffic across healthy service instances.

Programming fundamentalsbeginner4 min readCore concepts

Learning overview

Estimated time
4 minutes
Difficulty
Beginner
Prerequisites
No prior experience required
Learning outcome
Explain glossary using a clear mental model · Apply glossary in practical Programming fundamentals work
Last updated
July 12, 2026

Definition of Load Balancer

Infrastructure that distributes incoming traffic across healthy service instances.

In practice, load balancer becomes easier to use when you trace the input, the state it affects, and the output another part of the program can observe.

A practical example

Use load balancer in a small example first, then vary one input and explain the resulting behavior before you run the code.

What to remember

Remember load balancer as a specific relationship in a program, not as an isolated definition to memorize.

Frequently asked questions

Why does "Load Balancer" matter?

It helps you reason clearly about program behavior, trade-offs, and the next concept built on it.

How should a beginner practice "Load Balancer"?

Build a tiny example, predict its behavior, and explain the result in plain language.

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A taxonomy-generated path through this subject.

  1. Programming fundamentals
  2. Core concepts
  3. glossary
  4. fundamentals
  5. load-balancer
  6. What Is Function in Programming?

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