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Performance Testing (K6)

Ensure your app can scale. Master Load, Stress, and Spike testing using K6. Script user flows in JavaScript to find bottlenecks.

Will your site crash on Black Friday? This course teaches Performance Testing using K6, the modern developer-centric load testing tool. You will learn to script realistic user scenarios in JavaScript, simulate thousands of concurrent users, and analyze metrics like Request Rate and Latency. We cover different test types: Load, Stress, Spike, and Soak testing. Learn to integrate performance checks into your CI pipeline to catch regressions early.

✅ 100% Free & Lifetime Access
⏱️ 5-Minute Lessons (Bite-sized learning)
🚀 21-Lesson Path (Independent modules)
📱 Mobile Friendly (Learn anywhere)
Perf Eng
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Complete Course Syllabus

  • 1
    Performance Concepts
    Latency vs Throughput and Types of Tests.
  • 2
    K6 Scripting
    Writing user flows and HTTP requests in JS.
  • 3
    Test Scenarios
    Configuring virtual users (VUs) and ramp-up stages.
  • 4
    Thresholds & CI
    Failing the build if latency exceeds limits.
  • 5
    Analysis
    Reading results and finding the breaking point.

Estimated completion time: 21 lessons • Self-paced learning • Lifetime access

Career Outlook

Estimated Salary
$110k - $150k

Career Paths

Performance Engineer $120k-$160k
Site Reliability Eng $130k-$170k
QA Lead $115k-$155k

What You Will Learn

Script realistic user load scenarios using JavaScript and K6
Execute Load, Stress, Spike, and Soak tests effectively
Analyze performance metrics to identify system bottlenecks
Integrate performance thresholds into CI/CD pipelines
Visualize test results using Grafana and InfluxDB

Skills You Will Gain

Performance Testing K6 Load Testing System Analysis JavaScript Scripting

Who Is This For

Performance Engs
SREs
Backend Developers

Prerequisites

JavaScript Basics
HTTP knowledge

Performance Testing (K6) FAQs

Cloud load?

Yes, K6 Cloud allows distributed testing.

Vs JMeter?

K6 is code-based (JS), JMeter is GUI-based.

Hard to learn?

Easy if you know JS; cleaner syntax.

Frontend perf?

Focus is backend, but K6 can drive browsers.

Need more info?
All Reork courses are 100% free, self-paced, and fully accessible on mobile devices. No prior experience is required. Read our full Platform FAQ.

Tech Stack & Tools

K6
Grafana
InfluxDB
JMeter (Concept)

Recommended Next Steps

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TDD & BDD Methodologies

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Write tests before code. Master Test Driven Development (TDD) and Behavior Driven Development (BDD) using Cucumber and Gherkin.

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