Shift-Left Performance Testing: Reusing Functional Test Scripts for Load Testing

The promise of shift-left performance testing is straightforward: catch performance problems earlier, when they are cheaper and faster to fix. But the practical barrier has always been the same — performance testing requires a separate script, a separate tool, and a separate team. By the time load tests are written and run, the development window has already closed. What if the functional test your QA engineer wrote on Monday could also run as a load test by Friday — without anyone touching it? What if the script that validates a single checkout transaction could, with zero modification, simulate ten thousand concurrent shoppers under peak load conditions?
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Why Your Functional and Performance Tests Shouldn’t Live in Separate Worlds

In most organizations today, functional testing and performance testing exist as parallel universes. Different teams, different tools, different scripts, different schedules. Your QA team builds a comprehensive Selenium suite to validate user journeys, while your performance team recreates those same scenarios from scratch in LoadRunner or JMeter. Sound familiar?
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From Monitoring to Observability: What Modern Enterprises Really Need in 2026

The questions enterprises ask about their systems have fundamentally changed. In 2020, teams asked: “Is my system up?” In 2026, they’re asking: “Why is the user experience degrading? Where exactly is the problem? How fast can we fix it?” This evolution from traditional monitoring to full-scale observability isn’t just a technical upgrade—it’s a survival strategy. Cloud-native architectures, microservices proliferation, AI-driven applications, and unforgiving user expectations have made the old playbook obsolete. At Cavisson Systems, we witness this transformation daily as enterprises abandon siloed metrics for unified visibility across applications, infrastructure, logs, and real user experiences.
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AI-Powered Test Data Generation in Cavisson: Transforming the Way Teams Prepare for Testing

AI-Powered Test Data Generation in Cavisson: Transforming the Way Teams Prepare for Testing

In modern software delivery, the need for realistic and dependable test data has become central to both functional and performance engineering. Whether organizations are validating an online retail flow, executing a financial transaction simulation, or running large-scale insurance scenarios, their test results are only as accurate as the data that powers them. Unfortunately, traditional approaches to test data—manual spreadsheets, static datasets, or partial clones of production—often lead to inconsistency, privacy concerns, and unreliable outcomes. 
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WELLS FARGO REDUCES MTTR, OPTIMIZES INFRASTRUCTURE COST & DELIVERS SCALABLE APPLICATIONS USING NETDIAGNOSTICS

CHALLENGE

Down fall in distribution caused by application break down. Dealers and distributors were in trouble and not been able to deliver on time for certain application failures. The application collapsed due to massive data process operations. This caused high response that resulted into the failure of back-end application to serve users with 4XX errors. The bigger challenge was understanding what’s happening in production environment in real time during the peak hours. They tried to leverage production logs to diagnose the issue issues but couldn’t find root cause that lead to the application break down during the peak traffic hours every time.

END-TO-END MONITORING AND DIAGNOSTICS

Cavisson enables Wells Fargo to monitor performance across entire enterprise end-to-end. Starting from the user experience, application back-end, DB, Integration points, Application logs as well. Monitoring the complex infrastructure and to do the RCA uponanyissues.

"To ensure their fraud management application system is able to accommodate high volume transaction, banks need to have a proper test and implementation strategy and supporting tools to ensure they are able to cater to millions of transactions every day. Thankfully with Cavisson we do not have to look around anywhere. Their consultants know their job and their technology is way more efficient and superior."
Piyush Thakkar, VP

ABOUT WELLS FARGO

Industry: Banking

Location: United States

Challenge: Legacy System unable to identify issues with online transactions resulting in excessively high MTTR.

Product Used: NetDiagnostics

Result(s): NetDiagnostics’ Database Monitoring used to identify & optimize culprit SQL queries. End to end visibility by detecting multiple unknown issues in bank’s fraud management system.

SOLUTION

Using NetDiagnostics, Wells Fargo was able to uncover production issues that had resulted in security issues with the application ecosystem. Highlights of NetDiagnostics’ implementation:

❖ Analysis carried out by using NetDiagnostics’s powerful drilldown capabilities were instrumental in identifying a large concurrency issue caused by arrival rate and thereby increasing the response time.

❖ The underlying SQL query, the original culprit, was zeroed in on and optimized thereby limiting any further damage to the customer experience.

❖ Predictive alerts were setup to automatically identify anomalies based on trends & patterns. These alerts were instrumental in ensuring that the issue was proactively handled.

❖ Method Summary & Method Timing Reports used to identify time consuming method calls and their dependencies.

❖ Thread and Heap Dump Analysers utilized to pinpoint contentious threads and memory leak issues, leading to better performance and reduced resource utilization.

BENEFITS

NetDiagnostic’s implementation resulted in major optimization(s) across Wells Fargo’s application ecosystem, not only in terms of the product’s ability to detect issues and ensure compliance but also in reducing resource utilization when compared with the legacy tool. Some of the benefits derived post deployment were as follows:

❖ MTTR & MTTD, the two all-important metrics in terms of handling issues were reduced on the back of early identification in test environment.

❖ Resource utilization witnessed a drastic reduction with more than 80% decrease in infrastructure costs.

❖ Application blind spots eliminated by identifying issues integration callouts. with multiple

❖ Ensured compliance with stringent regulatory measures by identifying issues proactively.

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National Health Authority is the successor of National Agency, Turns to Cavisson performance monitoring For fast problem remediation

CHALLENGE

The National Health Agency (NHA) under Ministry of Health and Family Welfare has launched pilot for Beneficiary Identification System (BIS), which is a process whereby the identification criteria (as per AB-NHPM guidelines) will be applied on SECC and RSBY database to confirm application from ‘entitles’ beneficiaries. Ayushman Bharat will target about 10.74 crore poor, deprived rural families and identified occupational category of urban workers’ families as per the latest Socio-Economic Caste Census (SECC) data Yet, as NHA introduced new online BIS services, for 10.74 crore people, The IT team found itself in need to monitor multiple systems to ensure the smooth running of the company’s operations. It was nearly impossible to follow Business Transactions end-to-end through a complex environment of Windows, Linux, MS SQL, MySQL, and Oracle technologies.

“We were unable to find out the RCA for the issues, suddenly the application gets crashed and we were not being alerted to problems “

ABOUT COMPANY

Industry: Healthcare Location: India Challenge: Too much memory consumed by Cache degrades overall server performance, which need to be optimized for better server performance. Product Used: NetDiagnostics Result(s): 1)DB queries which are taking higher executing time now can be tuned. 2)Faster identification and resolution of very slow transactions.
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MEITY DELIVERS DISTRIBUTION AND SUPPLY CHAIN EXCELLENCE WITH CAVISSON

CHALLENGE

Down fall in distribution caused by application break down. Dealers and distributors were in trouble and not been able to deliver on time for certain application failures. The application collapsed due to massive data process operations. This caused high response that resulted into the failure of back-end application to serve users with 4XX errors. The bigger challenge was understanding what’s happening in production environment in real time during the peak hours. They tried to leverage production logs to diagnose the issue issues but couldn’t find root cause that lead to the application break down during the peak traffic hours every time.

END-TO-END MONITORING AND DIAGNOSTICS

Cavisson enables MEITY to monitor performance across entire enterprise end-to-end. Starting from the user experience, application back-end, DB, Integration points, Application logs as well.

Monitoring the complex infrastructure and to do the RCA uponanyissues.

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PHARMA MAJOR USES NETDIAGNOSTICS ENTERPRISE TO BRING STABILITY & SCALABILITY TO BUSINESS CRITICAL APPLICATIONS

CHALLENGE

Mankind Pharma, an Indian pharmaceutical behemoth with over 16,000 employees, presence in over 34 countries and $1 billion in revenue, has multiple in-house and customer facing applications that are instrumental in ensuring that all its verticals are running as per business expectations. The organization now has varied applications that are instrumental in delivering critical operational activities for both patients and staff. However, due to the sheer scale of users across these applications, there were repeated instances of slowness and/or non-responsiveness. In the healthcare sector where even the slightest of delays can have manifold impact, the organization could not afford to let these issues go undetected and needed a solution to identify the underlying root cause with speed and accuracy. Scalability issues were also prevalent as the application could not handle the load as expected and that resulted in direct revenue impact.

CAVISSON’S APM SOLUTION ENHANCES CUSTOMER EXPERIENCE & OPTIMIZES APPLICATION PERFORMANCE

One of the biggest Indian pharmaceutical organizations utilized NetDiagnostics Enterprise to identify & mitigate frequently occurring issues and drives operational and business efficiency across multiple verticals
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HOW MACY’S USED NETSTORM

Macy’s online sales has been growing at a blazingly fast rate since its roll out in 2000. During one of the holiday seasons, Macy’s website i.e. macys.com experienced serious issues. Macy’s technical team worked overtime to find the root cause behind the said issue but to no avail!

THE CHALLENGE

Identify & fix the root cause behind the hefty increase in number of sessions during peak season.

• One of the largest US Retailers
• 512 Stores across 43 States
• $25 Billion Revenue in 2019/$5 Billion Online

Observed trouble symptoms were caused by the database table space running short. That, in turn, was caused by a burst of Application Server Sessions increasing more than 10 folds from the time new software release was put in production just before the holiday period.

Macy’s load testing team, using LoadRunner, did not observe anything that indicated any issue with the software release rolled into production and had earlier reported the performance characteristics to be like the previous application software version. Problem was “patched” by increasing the table-space size and taking some hit to site responsiveness.

After failing to even reproduce the issue in lab, Several months later, Macy’s employed performance practice team from IBM Global Services (IGS). The IGS team used IBM’s Rational Performance Tester (RPT) with large number of load generators to generate production sized load but RPT could not scale to the desired size of the load. IGS than switched over to LoadRunner and conducted several tests. That also did not help in replicating production situation and hence no handle on the root cause.

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CSAA IMPROVES BUSINESS EFFICIENCY & AUTOMATES CRITICAL WORKFLOWS

OVERVIEW

For over 100 years, CSAA has been serving customers across USA by offering a diverse insurance portfolio. It has been at the forefront of technology adoption in order to deliver exceptional customer experience.

CHALLENGES

With a complex and distributed application ecosystem involving numerous third party integrations, the ability to capture real world scenarios and ensure availability of business critical applications was becoming a herculean task for the CSAA team using a legacy product for their load testing needs. Coupled with a high frequency release pipeline and the need for a comprehensive solution to tackle their growing business needs & complexity was apparent.

AUTOMATED LOAD TESTING SOLUTION

Cavisson enables CSAA to handle complex workflows in load testing scenarios. Coupled with extensive CI/CD integration capabilities, NetStorm, Cavisson’s Load Testing Platform ensured seamless integration of development and testing cycles. Simulating real-world scenarios in test cases was an added advantage.

CSAA implemented Pega’s workflow automation in critical business continuity applications & the existing tool was unable to replicate real-world scenarios.

SOLUTION

Cavisson System’s Load Testing Platform, NetStorm was implemented at CSAA and the team immediately saw the difference in terms of the solution’s ability to offer advanced correlation capabilities. Since the CSAA team was using Pega extensively in their CRM & ITSM workflows, they were able to capture complex correlations that were previously not possible.

Along with handling growing business complexity, NetStorm was also able to integrate OKTA authentication while replication scenarios via its powerful scripting functionalities. We incorporated OKTA authentication as part of the user journey thus enabling the CSAA team to fully replicate real world use cases.

Using NetStorm, CSAA had complete visibility along varied, business critical workflows thereby reducing instances which directly impacted customer experience and revenue.

Script Manager, our powerful & feature rich scripting functionality also ensured that the CSAA team, while migrating from the legacy solution, had to undergo minimal issues by seamlessly converting all the old test scripts to NetStorm scripts.

ABOUT CSAA

Industry: Insurance

Location: United States

Challenge: Unable to handle complex, real world scenarios during load testing via legacy products.

Product(s) Used: NetStorm Result(s): Drastic improvement in ability to handle complex, real-world scenarios in an automated manner.

BENEFITS

Along with helping CSAA deal with a variety of use cases during load testing, NetStorm was also instrumental in easing the lives of their DevOps team by providing a CI/CD integration support.

This capability not only ensured that both the Development & Quality Assurance teams were on the same page when it came to committing latest builds with greater efficiency and frequency but also provided the teams with a centralized tool to understand issues impacting their application in different builds/versions.

Next up was the fact that NetStorm gave CSAA the power to make changes to their test scripts on the go with our state-of-the-art features. The team was able to perform integral tweaks to conditions & variables in the said scripts without the need for any manual intervention, thereby saving crucial resources and building resiliency into critical applications.

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