使用 k6 為 API 進行壓力測試

Stress Testing Tool
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安裝套件

安裝套件。

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brew install k6

建立專案

建立專案。

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mkdir stress-testing
cd stress-testing

建立 main.js 檔。

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import http from 'k6/http';
import { check, sleep } from 'k6';

export default function () {
  const url = 'http://test.k6.io';
  const payload = JSON.stringify({
    foo: 'bar',
  });

  const params = {
    headers: {
      'Content-Type': 'application/json',
    },
  };

  const res = http.get(url, payload, params);
  check(res, { 'status was 200': (r) => r.status == 200 });
  sleep(1);

  // console.log({
  //   status: res.status,
  // });
}

export const options = {
  vus: 50,
  duration: '10s',
};

執行測試。

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k6 run main.js

輸出結果如下：

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          /\      |‾‾| /‾‾/   /‾‾/   
     /\  /  \     |  |/  /   /  /    
    /  \/    \    |     (   /   ‾‾\  
   /          \   |  |\  \ |  (‾)  | 
  / __________ \  |__| \__\ \_____/ .io

     execution: local
        script: main.js
        output: -

     scenarios: (100.00%) 1 scenario, 50 max VUs, 40s max duration (incl. graceful stop):
              * default: 50 looping VUs for 10s (gracefulStop: 30s)


     ✓ status was 200

     checks.........................: 100.00% ✓ 191       ✗ 0   
     data_received..................: 2.5 MB  225 kB/s
     data_sent......................: 56 kB   4.9 kB/s
     http_req_blocked...............: avg=412.54ms min=1µs      med=7µs      max=3.21s   p(90)=2.35s    p(95)=2.37s   
     http_req_connecting............: avg=214.3ms  min=0s       med=0s       max=1.01s   p(90)=1.01s    p(95)=1.01s   
     http_req_duration..............: avg=508.98ms min=223.47ms med=298.19ms max=3.65s   p(90)=790.28ms p(95)=807.22ms
       { expected_response:true }...: avg=508.98ms min=223.47ms med=298.19ms max=3.65s   p(90)=790.28ms p(95)=807.22ms
     http_req_failed................: 0.00%   ✓ 0         ✗ 382 
     http_req_receiving.............: avg=873.08µs min=12µs     med=78µs     max=237.5ms p(90)=219.6µs  p(95)=1.47ms  
     http_req_sending...............: avg=159.16µs min=5µs      med=23µs     max=3.09ms  p(90)=283.89µs p(95)=1.41ms  
     http_req_tls_handshaking.......: avg=190.41ms min=0s       med=0s       max=2.19s   p(90)=1.34s    p(95)=1.36s   
     http_req_waiting...............: avg=507.95ms min=223.33ms med=297.66ms max=3.64s   p(90)=789.38ms p(95)=803.82ms
     http_reqs......................: 382     33.888138/s
     iteration_duration.............: avg=2.84s    min=1.48s    med=2.02s    max=7.95s   p(90)=4.93s    p(95)=6.15s   
     iterations.....................: 191     16.944069/s
     vus............................: 16      min=16      max=50
     vus_max........................: 50      min=50      max=50


running (11.3s), 00/50 VUs, 191 complete and 0 interrupted iterations
default ✓ [======================================] 50 VUs  10s

參考資料