Web applications scalability is a common software development interview questions and answers pdf most of the web architect face. Any internet facing web application may require to be highly scalable due to heavy load of traffic. Now a days, developing a smart web application is much more than creating dynamic Web pages.
Irrespective of programming languages like Java, PHP, . NET, Python, Ruby or others, these challenges are faced by software architects everyday. In this decade, lot of distributed web applications are being developed that can utilize the resources from multiple machines, by separating the application functionality into manageable group of tasks that can be deployed in a distribute systems. There are numerous benefits to dividing applications this way, some of the most important are re-usability, scalability, and manageability. What Do You Mean By High Availability?
Having better service capacity with high availability and low latency is mission critical for almost all businesses. Availability means the ability of the application user to access the system, If a user cannot access the application, it is assumed unavailable. High Availability means the application will be available, without interruption. Achieving high availability for a application is not always a easy task. Availability is commonly expressed as a percentage of uptime in a given year. Scalability is the ability of a system, network, or process to handle a growing amount of load by adding more resources.