System Design
  • Introduction
  • Basics
    • Key Characteristics of Distributed Systems
    • Load Balancing
    • Reverse Proxy
    • Cache
    • Sharding or Data Partitioning
    • Index
    • Redundancy and Replication
    • SQL vs NoSQL
  • Advanced
    • The Difference between SLI, SLO, and SLA
    • Consistent Hashing
    • Server-to-client Communication
    • Data Sharding
  • Database
    • SQL
    • ACID
    • Data Partitioning
  • News Feed
    • Design a News Feed System
    • Timeline creation with sharded data
    • Facebook News Feed
    • Twitter News Feed (Timeline)
    • How does facebook rank news feed?
  • Mint
    • Design Mint
  • Web Crawler
    • Design a web crawler
    • Design a decentralized web crawler
  • TODO
    • TODO
    • Elastic Search
    • Lucene
    • twitter-snowflake
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  1. Basics

Load Balancing

PreviousKey Characteristics of Distributed SystemsNextReverse Proxy

Last updated 3 years ago

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  • Client to gateway: DNS parse domain to different ip addresses. (If we have multiple data centers, DNS will find the geographically closest data center)

  • Gateway to web server: reverse proxy

  • web server to application server: connection pool

  • database load balancing: partition / sharding

How to distribute traffic:

  • random, round-robin

  • min connection count

  • min latency

  • based on ip.

What if load balancer crashed?

TODO