# Performance Testing

<figure><img src="https://2539979715-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FugegoRCn84wtxrIelgft%2Fuploads%2FmaWfk8BI1YHVX9KMIagK%2F08_Ddosify_Performance_Testing.png?alt=media&#x26;token=ec8b531d-30a9-45a5-9e8b-e9fde299b084" alt=""><figcaption><p>You can simulate users on no-code Ddosify Platform</p></figcaption></figure>

You can create complex and realistic user flows on Ddosify No-code UI. Here are the list of key concepts on Ddosify Performance Testing:

* [Parametrization](https://docs.ddosify.com/ddosify/performance-testing/parametrization)
* [Test Data Import](https://docs.ddosify.com/ddosify/performance-testing/test-data-import)
* [Environment Variables](https://docs.ddosify.com/ddosify/performance-testing/environment-variables)
* [Correlation](https://docs.ddosify.com/ddosify/performance-testing/correlation)
* [Assertion](https://docs.ddosify.com/ddosify/performance-testing/assertion)
* [Debugging](https://docs.ddosify.com/ddosify/performance-testing/debugging)
* [Postman Import](https://docs.ddosify.com/ddosify/performance-testing/postman-import)

If you need CLI based load testing tool, [Ddosify Engine](https://github.com/ddosify/ddosify/tree/master/engine_docs) is the open-source and high-performance load testing tool, written in Golang.