Introduction to K6
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This document provides an overview and demonstration of K6, an open-source load testing tool. It discusses key aspects of K6 including what it is, why it should be used, and how to perform load testing with its various components. The document demonstrates K6's capabilities for load testing APIs, microservices, and websites using JavaScript scripts. It also shows how to integrate K6 with CI/CD pipelines using GitHub Actions.
![Threshold
● Thresholds are a pass/fail criteria used to specify the performance expectations
of the system under test.
● Thresholds analyze the performance metrics and determine the final test result
(pass/fail).
export const thres = {
thresholds: {
http_req_failed: ['rate<0.01'], // http errors should be less than 1%
http_req_duration: ['p(95)<200'], // 95% of requests should be below 200ms
},
};
Syntax:-](https://image.slidesharecdn.com/introductiontok6-220330112005/85/Introduction-to-K6-11-320.jpg)
Introduction to K6
- 1. Introduction of K6 Presented by : Soniya Raichandani QA Consultant
- 2. KnolX Etiquettes Punctuality Respect Knolx session timings, you are requested not to join sessions after a 5 minutes threshold post the session start time. Feedback Make sure to submit a constructive feedback for all sessions as it is very helpful for the presenter. Mute Please keep your window on mute. Avoid Disturbance Avoid leaving your window unmuted after asking a question
- 3. What is Performance testing? What is K6? Why k6? ➤ ➤ ➤ Agenda CI/CD in K6 ➤ ➤ Demo
- 4. ● It is a non-functional software testing technique that determines the stability,speed, and scalability of an application. PERFORMANCE TESTING ● In Performance testing,we evaluating the Application output,Speed,Velocity, Network bandwidth,maximum concurrent users, common response time etc.
- 5. Normal and expected load Higher than expected load Sudden increase load Huge volume of load Monitor database load Different Types Of Performance Testing
- 6. What is ?
- 7. ● k6 is an open-source load testing tool for testing the performance of APIs, microservices, and websites. ● This tool is scriptable and support the Javascript language. ● k6 was initially released on GitHub in 2017 by Load Impact as an open-source. ● It’s written in Go Language. K6
- 8. Load Testing in K6 Load Testing is primarily concerned with assessing the current performance of your system in terms of concurrent users or requests per second. ● Options ● Checks & Thresholds ● Modules ● Metrics ● Groups & Tags Components:-
- 9. Checks Checks VUs Duration Stages A fixed number of VUs execute as many iterations as possible for a specified amount of time. A string specifying the total duration a test run should be run for. Array of objects that specify the target number of VUs to ramp up or down to. Options in K6
- 10. ● Checks are asserts, but differ in that they don't halt the execution. Instead, they store the result of the check, pass or fail, and let the script execution continue. ● Checks are great for codifying assertions relating to HTTP requests/responses, such as making sure the response code is an HTTP. CHECKS ● In the script,need to import the check -’import {check} from K6’ Syntax:- check(res,{ 'is status 200': (r) => r.status === 200, });
- 11. Threshold ● Thresholds are a pass/fail criteria used to specify the performance expectations of the system under test. ● Thresholds analyze the performance metrics and determine the final test result (pass/fail). export const thres = { thresholds: { http_req_failed: ['rate<0.01'], // http errors should be less than 1% http_req_duration: ['p(95)<200'], // 95% of requests should be below 200ms }, }; Syntax:-
- 12. Modules While writing test scripts, it's common to import different modules, or part of modules, for usage throughout the script. In k6, it is possible to import three different kinds of modules: ● Built-in modules ● Local filesystem modules ● Remote HTTP(S) modules
- 13. Metrics Build-In Metrics D Build- In Custom Metrics A metric that allows for calculating statistics on the added values (min, max, average and percentiles). Custom Metrics Counter Gauge Rate Trend
- 14. Groups & Tags Groups:- Groups are optional, and it allows you to “group” a large load script to help you with the test result analysis. Groups can be nested, allowing you the BDD-style of testing. Tags:- Tags are a simple and powerful way to categorize your k6 entities for later results filtering.
- 15. Speed Maintenance Support of test code Reports Language Recording Protocol VCS K6 Why K6?
- 17. CI/CD in K6 In k6,it is possible to integrate with CI/CD tools with the help of Github actions because github actions has own advantages.To integrate k6 with GitHub action we need k6 based test script. Integration K6 with Github Actions GitHub actions more powerful and most effortless CI/CD tools among which we have earlier tools like Jenkins, etc.
- 18. Demo