Cloud development requires careful planning, maintenance, and monitoring, and patterns can help achieve highly scalable, reliable, and secure solutions. Many of the patterns discussed in this chapter are applicable to on-premises applications and are essential in cloud solutions. The design of a cloud-first application should consider many factors, including scalability, availability, maintenance, monitoring, and security.
A scalable application allows for fluctuations in system load while maintaining an acceptable level of performance. The load can be measured in the number of users, concurrent processes, amount of data, and other factors in software. The ability to scale a solution horizontally requires a particular type of application development and is a paradigm that is especially significant to cloud computing. Patterns such as Queue-Based Load Leveling are a great...
