Gatling.io

Gatling.io

Gatling.io is an open-source load and performance testing framework based on Scala, Akka and Netty. It allows users to simulate load on a system and analyze overall performance under various user loads. Gatling is used for testing APIs, microservices and web applications.
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load-testing performance-testing scalability-testing

Gatling.io: Open-Source Load Testing Frameworks

An open-source load and performance testing framework based on Scala, Akka and Netty for simulating loads and analyzing system performance under various user loads.

What is Gatling.io?

Gatling.io is an open-source load and performance testing framework based on Scala, Akka and Netty. It provides a domain-specific language (DSL) to model user behavior and create scenarios that simulate load on a system.

Some key features of Gatling include:

  • Support for standard protocols like HTTP, WebSocket, JMS, MQTT etc.
  • Advanced assertion capabilities for validation
  • Interactive and headless runs
  • Real-time monitoring and metrics dashboard
  • Integration with CI/CD pipelines
  • Scalability to thousands of virtual users

Gatling is commonly used for:

  • Load testing web applications and APIs
  • Performance testing microservices architecture
  • Validating scaling capacity
  • Catching performance regressions

With its focused DSL, Gatling aims to make load testing approachable for developers and testers. The reports provide insights into response times, throughput and other metrics under simulated load. Overall, Gatling is a reliable open-source tool for load and performance testing needs.

Gatling.io Features

Features

  1. Record and playback - Record user actions and replay them to simulate load
  2. Advanced simulation engine - Flexible scenario definition using Scala based DSL
  3. Multiple protocols - Supports HTTP, WebSocket, JMS and more
  4. Assertions and validations - Validate response content, status codes, timings etc
  5. Interactive HTML reports - Detailed metrics on response time, throughput, failures etc
  6. CLI and Maven plugin - Can integrate with CI/CD pipelines
  7. Cloud scale testing - Integrates with Kubernetes for large scale load tests

Pricing

  • Open Source

Pros

Open source and free to use

Powerful Scala based DSL for flexible test scenarios

Good documentation and active community support

Integrates well with CI/CD pipelines

Detailed HTML reports for analysis

Cons

Steep learning curve for Scala DSL

Limited debugging capabilities compared to commercial tools

Lacks some enterprise features like SLA reporting

Not ideal for non-technical users


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