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Non functional qualities of the system

 
J Gupta
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Sorry if this a repeat question but i searched on this forum and Googled as well, read some books or may be I am thinking too hard about this topic

I want to understand NF abilties from a single tier, 2 tier or n tier perspective

For example why is a single tier considered non scalable? I can think that horizontal scalability may be hard because adding a new mainframe may not be easy while adding memory or should not be hard.

When I compare each ability with each tier in a matrix form all answers appear debateable to me,I feel there is no definite answer bascially depends on the system architecture or vendor implementation
 
Deepak Bala
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For example why is a single tier considered non scalable? I can think that horizontal scalability may be hard because adding a new mainframe may not be easy while adding memory or should not be hard.


Will horizontal scaling alone solve the problem ? What if there is a need to address only certain parts of the system.

For example a web application may take a hit because of the number of users requesting static content. In which case you can consider scaling your web servers alone.

You are right however that some questions are debatable and that architecture never really has one single answer.
 
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