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November 15, 2022

How Custom Business Tools Improved Efficiency for Netflix

Chaos Monkey is a tool developed by Netflix to help improve the reliability and resilience of its systems. By randomly "killing" (i.e., shutting down) servers and containers in production, Chaos Monkey helps Netflix identify and fix potential problems before they can cause outages or other issues.

One of the key ways that Chaos Monkey has helped Netflix improve its systems is by identifying and fixing weak points in the company's infrastructure. By shutting down servers and containers randomly, Chaos Monkey helps Netflix identify and fix potential problems before they can cause outages or other issues. For example, if a server or container is shut down and the rest of the system continues to function properly, this indicates that the server or container was not essential and can be removed without affecting the overall system. On the other hand, if the shutdown of a server or container causes issues for the rest of the system, this indicates a potential problem that needs to be addressed.

Another way that Chaos Monkey has helped Netflix improve its systems is by promoting a culture of resilience and preparedness. By regularly "killing" servers and containers in production, Chaos Monkey helps Netflix employees become more accustomed to dealing with failure and to develop a mindset of constantly anticipating and preparing for potential problems. This culture of resilience and preparedness has helped Netflix maintain a high level of reliability and availability, even in the face of challenges and unexpected events.

In addition, Chaos Monkey has helped Netflix improve its systems by providing valuable data and insights. By collecting data on the impact of server and container shutdowns, Chaos Monkey helps Netflix understand the dependencies and interactions between different components of its infrastructure. This data can be used to identify potential bottlenecks and improve the efficiency and performance of the company's systems.

Netflix has been able to build many redundancies based on this data that help ensure the network is always up and performing for end users. From complex load balancers to quick spin ups of backup servers, the auto-scaling and deployment of their servers can be largely attributed to Chaos Monkey and the havoc it caused during the initial days of their infrastructure ramp-up.

Overall, Chaos Monkey has been a valuable tool for Netflix in improving the reliability and resilience of its systems. By identifying and fixing weak points, promoting a culture of resilience and preparedness, and providing valuable data and insights, Chaos Monkey has helped Netflix maintain a high level of availability and performance, even in the face of challenges and unexpected events.

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