Chapter 26. Putting It All Together
We have covered a lot of material in a lot of different topics in this book that, when taken together, are designed to help you scale your applications:
Availability and availability management
Risk and risk management
Building applications by using services and microservices
Scaling your application and your development team to work on your application
Using the cloud to help scale your application
Availability is the ability of your application to perform the tasks it is capable of doing. This differs from reliability, which is the ability of your application to not make mistakes. A system that adds 2 + 3 and returns 6 has poor reliability. A system that adds 2 + 3 and never returns a result has poor availability.
Poor availability is caused by many things, including the following:
Unplanned load-based changes
Increased number of moving parts
Application availability is often the first casualty as an application tries to scale beyond its capabilities. The topic of availability is covered extensively in PartÂ I, including how to measure it and how to maintain a highly available application. Even in light of continuously increasing scaling needs, your application availability can be maintained at appropriate levels for your needs.
You cannot possibly manage the risk in your system if you cannot identify the risk in your system. This ...
Get Architecting for Scale now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.