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Software Testing with Fexingo: QA, Automation, and Reliable Software Engineering

Software Testing with Fexingo: QA, Automation, and Reliable Software Engineering

By: Fexingo
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Lucas and Luna examine the discipline of software testing as a strategic function, not a checkbox. Each episode focuses on a specific testing practice — from unit test coverage metrics and integration test design patterns to the economics of test automation ROI and the psychology of flaky test triage. They walk through real-world case studies: how Stripe reduced regression defects by 40% with contract testing, the trade-offs between Selenium and Cypress for e-commerce checkouts, and why Google's test size taxonomy (small/medium/large) forces better architectural decisions. Lucas explains the math behind mutation testing scores and the diminishing returns of 100% code coverage; Luna challenges him on how to sell testing budgets to skeptical product managers and when manual exploratory testing still outperforms automation. They also explore testing philosophies — shift-left vs. shift-right, risk-based testing prioritization, and the role of AI in generating test oracles. The listener leaves each episode with a specific framework or heuristic: how to evaluate a test suite's health, when to kill a test, or how to design a QA career path that doesn't plateau. No generic advice — just the numbers, the names, and the debates that shape reliable software. What does it actually take to build a testing culture that prevents defects instead of just catching them? #SoftwareTesting #QA #TestAutomation #UnitTests #IntegrationTesting #RegressionTesting #Cypress #Selenium #MutationTesting #TestCoverage #ShiftLeft #FlakyTests #TestROI #ContinuousTesting #SoftwareEngineering #Technology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo© 2026 Fexingo. All rights reserved. Economics
Episodes
  • How Load Testing Your Database Prevents CASCADING Failures

    How Load Testing Your Database Prevents CASCADING Failures
    Jul 4 2026
    In this episode, Lucas and Luna explore a specific failure mode that haunts engineering teams: the database cascade. They dissect a real-world example from a mid-2025 incident at a major payments processor, where a routine schema migration triggered a chain reaction that took down three dependent services. Lucas explains why traditional load testing misses these failures, and Luna shares a lightweight technique called 'dependency blast radius testing' that teams can adopt today. They break down the difference between horizontal scaling and smart query design, and why a single slow query can bring down an entire microservice cluster. No fluff, just a concrete testing strategy to prevent your database from becoming your system's single point of failure. #DatabaseTesting #LoadTesting #CascadingFailures #ChaosEngineering #Reliability #SoftwareEngineering #QA #Automation #Microservices #PerformanceTesting #SQL #DependencyTesting #Tech #FexingoBusiness #BusinessPodcast #SoftwareTesting #Engineering #Podcast Keep every episode free: buymeacoffee.com/fexingo
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    8 mins
  • How Chaos Engineering Strengthens Your Software Testing

    How Chaos Engineering Strengthens Your Software Testing
    Jul 4 2026
    In Episode 90 of Software Testing with Fexingo, Lucas and Luna dive into chaos engineering as a proactive testing discipline. They explain how intentionally injecting failures like server crashes, high latency, or resource exhaustion into production-like environments reveals weaknesses before real users are affected. Using concrete examples from Netflix's Chaos Monkey and a hypothetical e-commerce platform, they discuss how chaos experiments test system resilience, observability, and incident response. Lucas shares how his team runs weekly 'GameDay' sessions with failure scenarios such as database connection drops and CPU spikes, while Luna highlights the importance of steady-state hypotheses and blast radius control. They explore tools like Gremlin and Chaos Toolkit, and caution against common pitfalls like testing in production without safeguards. The episode ties chaos engineering to broader testing strategies like fault injection, load testing, and monitoring, offering practical steps for teams at any scale. If you value ad-free content like this, support at buy me a coffee dot com slash fexingo. #ChaosEngineering #SoftwareTesting #ResilienceTesting #Netflix #ChaosMonkey #Gremlin #ChaosToolkit #GameDay #FaultInjection #SteadyState #BlastRadius #Observability #IncidentResponse #ProductionTesting #FexingoBusiness #BusinessPodcast #Technology #QAAutomation Keep every episode free: buymeacoffee.com/fexingo
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    9 mins
  • How Test Flakiness Metrics Reveal CI Pipeline Health

    How Test Flakiness Metrics Reveal CI Pipeline Health
    Jul 3 2026
    Episode 89 of Software Testing with Fexingo: QA, Automation, and Reliable Software Engineering. Lucas and Luna dive into test flakiness as a leading indicator of CI pipeline health. They examine a real-world case from a mid-size e-commerce company where a 3% flaky-test rate masked a deeper infrastructure issue costing the team 40 minutes per developer per day. Lucas explains why tracking flaky test counts alone is misleading and introduces the 'flaky test weight' metric — measuring failures per execution and rerun cost. Luna shares how her team at a fintech startup reduced flakiness by 70% using test splitting and deterministic seed values. They discuss how to set service-level objectives for flakiness, automate quarantine, and avoid the trap of simply re-running tests until green. If you've ever ignored a 'rare failure' in a CI build, this episode will change how you read your test dashboard. #TestFlakiness #CIPipeline #ContinuousIntegration #TestAutomation #SoftwareTesting #FlakyTests #DevOps #QAMetrics #TestReliability #FlakyTestWeight #TestQuarantine #ServiceLevelObjectives #DeterministicTesting #TestInfrastructure #DeveloperProductivity #Technology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    9 mins
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