System Performance

We test the GST Accelerator API to ensure reliable, low-latency performance at scale. Below are our latest k6 load test results hitting the primary rate lookup endpoints.

Last tested: 2026-07-25
Concurrency Endpoint Avg Response P95 P99 Error Rate
50 VUs /api/v1/lookup & /api/v1/hsn/{code} 18ms 35ms 52ms 0.00%
100 VUs /api/v1/lookup & /api/v1/hsn/{code} 24ms 42ms 65ms 0.00%
200 VUs /api/v1/lookup & /api/v1/hsn/{code} 41ms 75ms 110ms 0.00%
          /\      |‾‾| /‾‾/   /‾‾/   
     /\  /  \     |  |/  /   /  /    
    /  \/    \    |     (   /   ‾‾\  
   /          \   |  |\  \ |  (‾)  | 
  / __________ \  |__| \__\ \_____/ .io

  execution: local
     script: load_test.js
     output: -

  scenarios: (100.00%) 1 scenario, 200 max VUs, 1m30s max duration (incl. graceful stop):
           * default: 200 looping VUs for 1m0s (gracefulStop: 30s)

     ✓ status is 200
     ✓ error rate is 0%

     checks.........................: 100.00% ✓ 120000 ✗ 0
     data_received..................: 94 MB   1.5 MB/s
     data_sent......................: 8.4 MB  140 kB/s
     http_req_duration..............: avg=41.2ms min=12ms med=38ms p(90)=65ms p(95)=75ms p(99)=110ms max=145ms
       { expected_response:true }...: avg=41.2ms min=12ms med=38ms p(90)=65ms p(95)=75ms p(99)=110ms max=145ms
     http_reqs......................: 120000  2000/s
     vus............................: 200     min=200 max=200
     vus_max........................: 200     min=200 max=200