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Performance Testing

Continuous Performance Validation of Server Response Important during Load Testing

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Load testing checks the ability of a software application to perform under anticipated user loads. The objective of load testing is to identify potential bottlenecks in an application before sending it ‘to market’. Further, load testing aims to check the availability of a system, its performance, capacity, and to validate its ability to deliver the service or functionality requested by the user/as intended. Any top performance testing company would ensure that testers also validate server response. This is performed by checking database execution time and verifying the response time of the application under low, normal, moderate, and heavy load conditions. The fact is experts know that load and functionality related problems usually happen, and hence every single step of performance validation is critical to success. Companies specializing in load and performance testing will validate server responses each time. This validation covers a vast gamut of activities, and some of these include validating – response code, basic structure of a page, main components, page completeness, important points of the activity currently being conducted, and a lot more.

Deliver Top Quality Products

A top performance testing company would ensure that accuracy of the server response each time. To achieve this, test engineers would ensure that load testing products provide efficient validation functionality. By devising test scenarios and validation parameters that guarantee the successful execution of services being tested, testers can ensure validation of the server response to some extent. Some test engineers may view this from a load testing perspective – for instance, identifying pages with responses that exceed certain specified duration. Engineers undertaking load testing services would need to investigate such discrepancies and provide immediate remediation.

Validation of Server Response

Checking the Response Codes

Load testing service engineers could discover that unexpected data is going out as a user request-response. Response codes are essential to detect such anomalies in the server response. For instance, a properly functioning web server is expected to generate a response code of 200. However, testers of a performance testing company may detect responses such as 401, 404, and 503. These responses indicate a clear problem while validating the server response during load testing exercises. Further, the total time required to load an entire webpage is indicative of server response performance in certain testing scenarios.

Hardware Problems

Computer hardware performance is critical to load testing exercises. An engineer providing performance testing services must assess the performance of testing hardware before evaluating test results. The hardware (such as a web server or a server farm) hosting an application must perform optimally at all times. An intelligent approach to this would be to perform distributed load testing from multiple geographical locations. Additionally, modern testing tools and frameworks can help detect hardware problems that could distort the server response in test environments.

Validation Rules

Test engineers performing load testing services can deploy validation rules to assess the accuracy of server responses. Validation rules represent comparison criteria that testers can add to scenarios and these rules work by comparing server response data against expected values. A tester can create a specific validation rule if a server ‘responds’ with incorrect data. Typically, validation rules can be built around simple data types such as strings, long strings, numbers, Boolean values, and complex data such as objects or arrays. Such techniques represent benchmarks in the realm of server response validation during load testing.

In Conclusion

Server response has a direct impact on the experience of a software application or product by the end user. Therefore, this parameter must be tested from multiple perspectives to guarantee client satisfaction and user delight. Functional problems usually emerge during load and performance testing – not typically during load execution but during dry-runs of low load. Additionally, inconsistent response times, spikes, and others are certain ‘typical flawed load behaviors’. The premise of validating server responses during load and performance testing is to find unusual and unexpected flaws. Experts testers would excel in such testing exercises – connecting with us puts you in the driver’s seat.

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