Key Concepts

Review core concepts you need to learn to master this subject

Resiliency

In DevOps, resiliency is a system’s ability to continue to provide an acceptable level of performance even when problems are occurring within the system.

Introduction to Resiliency
Lesson 1 of 1
  1. 1
    _The dashboard flashes red across nearly every service. The developers rush to try to locate the problem. They quickly realize that the main server, which hosts the core of the application, has had…
  2. 2
    *It’s been a hectic week for Karla. First, there was a power supply failure that took down the main server. Then, on Wednesday, Karla’s company lost support for the payment processing service they…
  3. 3
    _The Data team was excited to roll out the new database system they had been working on for months. However, when the database was deployed on production hardware, something was wrong. All of the d…
  4. 4
    _At an emergency call center, something wasn’t right. All of the calls coming in were apparently coming from the same spot in the middle of the Atlantic ocean! It turned out the third-party geo-loc…
  5. 5
    In 2020 Google reported dealing with a DDOS attack that lasted for over six months. At peak times the traffic created by the atta…
  6. 6
    _Over the last few months, Bloop Co. has been trying to improve its systems’ resiliency. But how do they know that they are on the right track? Which of their efforts is most successful? What are f…
  7. 7
    _Bloop Co wants to make sure that their system can handle thousands of new users attempting to buy their product. One of the engineers has created a test. The company gathers around as simulated re…
  8. 8
    _The engineering team waits anxiously as their manager walks around in the server room. Suddenly, the manager pulls the plug on one of the server racks. The team watches the monitors. An alert goes…
  9. 9
    Over the course of this lesson, we’ve discussed resiliency, a system’s ability to perform under problematic conditions. Common conditions we need our systems to be resilient against include: * **I…

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