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Gatling

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define load tests as code in Java, JavaScript/TypeScript, Kotlin, or Scala and automate performance testing in CI/CD

OSS scale score 272.1OSS health 85Update pace 48 commits/30d
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Stars
6,956
Primary language
Scala
License
Apache-2.0
Repository last updated
Sep 29, 2026
On this page

Overview

Gatling is a code-first load-testing and performance-engineering platform. Teams can write simulations in Java, JavaScript/TypeScript, Kotlin, or Scala and exercise HTTP, WebSocket, SSE, JMS, gRPC, MQTT, and other supported workloads for regression and release-gate checks.

Features and best fit

Based on official documentation; not hands-on tested · Content checked:

Key features

Manage performance tests as version-controlled code in multiple languages

The README documents SDKs for Java, JavaScript, TypeScript, Kotlin, and Scala, allowing simulations to be reviewed and automated with the rest of the source code.

Sources: [1]

Exercise HTTP, WebSocket, SSE, JMS, gRPC, and MQTT workloads

Official protocol support spans web/API traffic and messaging/event workloads, enabling simulations that approximate different production traffic patterns.

Sources: [1]

Generate load with a non-blocking asynchronous architecture

Gatling contrasts its non-blocking asynchronous design with one-thread-per-user tools and focuses on resource efficiency and scalability per load-generator node.

Sources: [1]

Best fit

Fits teams running performance tests in the same delivery workflow as application code

It is useful when simulations should be automated in CI/CD for regression detection and performance gates rather than operated as isolated GUI test assets.

Sources: [1]

Before adoption

Run load tests only against systems you are authorized to test

Because Gatling can intentionally generate substantial traffic, tests should target dedicated or explicitly authorized environments with known capacity, cost, and rate-limit boundaries and should ramp load gradually.

Sources: [1]

Separate Enterprise features from the open-source core

The README describes real-time dashboards, trend and SLO monitoring, AI-assisted summaries, RBAC, and related capabilities under Gatling Enterprise Edition. Evaluate the OSS repository on its open-source test-as-code and local execution capabilities.

Sources: [1][4]

Official sources

  1. [1]Gatling v3.16.0 README(2026-10-04)
  2. [2]Gatling v3.16.0 build definition(2026-10-04)
  3. [3]Gatling v3.16.0 release(2026-10-04)
  4. [4]Gatling Apache 2.0 license(2026-10-04)
Supplemental curator note

Run load tests only against explicitly authorized targets and ramp traffic gradually. Features described in the README under Gatling Enterprise Edition, such as advanced dashboards, SLO monitoring, and AI-assisted summaries, should be evaluated separately from the OSS core.

Try it in 3 steps

  1. 1

    Download the official Gatling 3.16.0 bundle

    Pin the download to the official GitHub release bundle. No load test is started.

    curl -L -o gatling-bundle-3.16.0.zip https://github.com/gatling/gatling/releases/download/v3.16.0/gatling-bundle-3.16.0.zip
  2. 2

    Extract the Maven-wrapper-based bundle

    The standalone bundle has been Maven-wrapper-based since Gatling 3.11. Inspect only the wrapper and project structure after extraction.

    rm -rf gatling-3.16 && mkdir gatling-3.16 && unzip -q gatling-bundle-3.16.0.zip -d gatling-3.16 && find gatling-3.16 -maxdepth 3 -type f \( -name mvnw -o -name mvnw.cmd \) -print
  3. 3

    Display Gatling plugin help without generating load

    Do not launch a simulation. Run actual load tests only against explicitly authorized test environments.

    GATLING_DIR=$(find gatling-3.16 -type f -name mvnw -print -quit | xargs dirname); test -n "$GATLING_DIR" && cd "$GATLING_DIR" && ./mvnw gatling:help
Check the official README

Growth

Growth trends · Last 30 days

6,956 Stars

Trend data is still being collected.

Development activity

Last 90 days · weekly

Commits (last 30 days)
48
Open PRs
2

Development activity is still being collected.

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GitHub data

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GitHub Topics

  • netty
  • scala
  • loadtesting
  • automation
  • gatling
  • load-testing
  • java
  • cicd
  • javascript
  • kotlin
  • load-test
  • load-tests
Stars
6,956
Forks
1,207
Watchers
226
Open issues
16
Contributors
193
Owner type
Organization
Primary language
Scala
License
Apache-2.0
Repository last updated
Sep 29, 2026
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