Shaun Thomas

Camp Counselor

Everything You Wanted to Know About High Availability (But Were Afraid to Ask)

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Wednesday, July 27, 2022 - 6:00 PM UTC, for 1 hour.

ON THAT (Online Only) Regular, 60 minute presentation

High Availability
Clusters
Concepts

We all want our applications and databases online at all times, but that’s much easier said than done. In order to determine which tools will best accomplish that, we need to know what High Availability actually means. Consensus, Quorum, Split Brain, CAP Theory, Failover, CDN, Database-backed Caching, API queues, and other terms get thrown around liberally. But what are the underlying situations that spawned these concepts? How can we combine them to keep our application stack online, even if several parts of it are malfunctioning or simply broken? For those who are interested, this talk can help clear everything up!

Prerequisites

Exposure to management of a major stack resource (app, data, cache, infrastructure, etc.) is a great start, since it gives some insight into what it takes to keep it online, or the role it may play. Many of the concepts we'll discuss are universal and apply to topology considerations in general and can be applied in many contexts.

Take Aways

  • What each layer of a HA stack contributes
  • Fundamental HA terminology
  • Architecture distribution strategies
  • Necessary design compromises
  • Application interactivity under duress
favorited by:
Andrea Rhodes Bryan Shannon