Now a days every business has a face. Every business is represented by its website. Web based applications are becoming very critical to the business, if they have a very large client base or customer base which regularly access their site. In order to have a good experience to end users in timely manner , it has to be optimized.
For this to happen performance testing is done as part of non functional testing. We have some parameters for which we see the web site behavior.
- Responsiveness – How responsive an application is to a client request we need to check. It is about when users do some click events on page or does some navigation etc, how quickly they get back the response, that needs to optimized if it is low on it
- Throughput – In general it is number of units of work per unit of time. In case of web application it can be request/second or hits/second or for sales guys it can be calls/second or transactions/second etc.
- Reliability – It is like if at any point of time if some user access some page, it should show up the desired page. It should not show errors etc.
- Scalability – It may not be of that much importance but if you want to upgrade your system in order to make it handle some extra work in near future (though more resources will be added like extra memory, processors etc). It should be able to handle it without effecting the performance of web application or system
Above are some basic points that should be taken in account while going for performance testing.
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