Littles Law Technology Academy

  Amazon Managed Streaming for Apache Kafka (MSK)   is a   fully managed service   that makes it easy to build and run applications that use   Apache Kafka   for real-time data streaming. In this guide, we’ll walk through how to use  Apache JMeter  — an open-source load testing tool — to test AWS MSK Kafka setup. We’ll cover: Required  plugins and JAR files Configuration settings  for Kafka producer/consumer samplers A sample  JMeter script (JMX)  for sending and reading messages from MSK Authentication (SASL/SCRAM, IAM)  needed Plugins and JAR files : kafka-clients-3.3.1 guava-31.1-jre lz4-java-1.8.0 snappy-java-1.1.8.4 zstd-jni-1.5.2–1 These jar files will be installed when you will install “DI KafkaMeter ” from plugin manager Press enter or click to view image in full size Configuration settings  for Kafka producer config and samplers : Add the Kafka producer config from Add > Config Element > Kafka Producer ...

  📌 Popular Open Source Tools Apache JMeter Widely used, supports HTTP, JDBC, FTP, SOAP, REST, etc. Extensible with plugins. GUI + CLI (non-GUI for load execution). Gatling Scala-based, developer-friendly. Supports CI/CD pipelines. Locust Python-based, distributed load generation. Scripted in Python for flexibility. 📌 Commercial Tools LoadRunner (Micro Focus) Enterprise-grade, wide protocol support. Advanced analytics and monitoring. NeoLoad (Tricentis) Supports APIs, web, SAP, Citrix, mobile. Good CI/CD integration. BlazeMeter Cloud-based, JMeter-compatible. Scalable distributed testing. Dynatrace Synthetic / AppDynamics / New Relic Focused on monitoring + synthetic testing. 📌 Cloud-Native/Modern Options k6 – Modern scripting (JavaScript), CI/CD friendly. Azure Load Testing / AWS Distributed Load Testing – Cloud-native integration. Google Cloud Performance Testing (via k6/JMeter integ...

📌 Definition Performance Testing is a non-functional testing technique used to determine how a system performs under expected or peak workload conditions in terms of responsiveness, stability, scalability, and reliability . 🎯 Objectives Identify response time, throughput, and resource utilization . Detect bottlenecks (CPU, memory, I/O, network, DB). Establish a baseline for performance. Ensure the system meets SLAs (Service Level Agreements) . Validate scalability and stability . 🛠️ Key Performance Metrics Response Time (Latency) : Time taken to respond to a request. Throughput : Number of transactions processed per second/minute. Concurrent Users : Number of users accessing the system simultaneously. Error Rate : Percentage of failed requests. Resource Utilization : CPU, memory, disk I/O, network usage. 🔑 Types of Performance Testing (High-Level) Load Testing – Normal & peak load handling. Stress Testing – Beyond capacity (brea...

Ultimate Guide to Ace Your Performance Testing Interview Preparing for a performance testing interview requires a mix of technical knowledge, hands-on experience, and strong communication skills . Below is a step-by-step roadmap to help you succeed. 1. Understand Job Requirements Carefully review the job description. Identify key skills needed (e.g., JMeter, LoadRunner, cloud-based testing). Tailor your preparation based on the role (e.g., SDET, Performance Engineer, QA Analyst ). 2. Review Key Performance Testing Tools Familiarize yourself with industry-standard tools: JMeter (Open-source, highly customizable) LoadRunner (Enterprise-grade, supports complex protocols) NeoLoad (User-friendly, CI/CD integration) Gatling (Scalability, real-time reporting) Locust (Python-based, distributed load testing) Bonus Tip: Know the pros and cons of each tool and when to use...

Performance Testing Interview Questions | QA Interview Prep Performance Testing Interview Questions Essential questions for load testing, JMeter, and performance analysis Environment Issues Medium 3 min read July 12, 2023 If a test shows good results in lower environments but fails in production, what could be the causes? Common causes for this discrepancy include: Environment differences : Production has different hardware, network configs, or data volumes Load characteristics : Production traffic patterns differ from test scenarios Third-party integrations : Mock services in test vs real integrations in production C...

Interview Questions for a LoadRunner Performance Tester Role Are you preparing for an interview for a  LoadRunner Performance Tester  role? Whether you're a fresher or transitioning into performance testing, it's essential to be well-prepared with fundamental concepts. Here are  10 beginner-level interview questions  that can help you ace your LoadRunner performance testing interview! 1. What is LoadRunner, and what are its key components? Answer: LoadRunner is a performance testing tool by Micro Focus used to test applications under load. Its key components include: Virtual User Generator (VuGen)  – Records and scripts user actions. Controller  – Manages and schedules load tests. Load Generators  – Generate virtual user load. Analysis  – Provides test results and performance metrics. 2. What is a Virtual User (VUser) in LoadRunner? Answer: A  Virtual User (VUser)  simulates a real user interacting with the application. Each VUser execut...