shopify-load-scale

# Shopify Load & Scale ## Overview Load test Shopify app integrations while respecting API rate limits. Plan capacity for high-traffic events like Black Friday / Cyber Monday (BFCM). ## Prerequisites - k6 load testing tool installed (`brew install k6`) - Test store with API access (never load test production) - Understanding of Shopify rate limits per plan ## Instructions ### Step 1: Understand Capacity Constraints Your app's throughput is bounded by Shopify's rate limits, not your infrastructure: | Plan | GraphQL Points | Restore Rate | Max Sustained QPS | Burst Capacity | |------|---------------|-------------|-------------------|----------------| | Standard | 1,000 | 50/sec | ~10 queries/sec | 1,000 points burst | | Shopify Plus | 2,000 | 100/sec | ~20 queries/sec | 2,000 points burst | A typical product query costs 10-50 points. At 50 points/query, Standard supports ~1 query/second sustained. ### Step 2: k6 Load Test Script ```javascript // shopify-load-test.js import http from "k6/http"; import { check, sleep } from "k6"; import { Rate, Counter, Trend } from "k6/metrics"; // Custom metrics const shopifyErrors = new Rate("shopify_errors"); const throttledRequests = new Counter("shopify_throttled"); const queryCost = new Trend("shopify_query_cost"); export const options = { stages: [ { duration: "1m", target: 2 }, // Warm up — 2 VUs { duration: "3m", target: 5 }, // Normal load { duration: "2m", target: 10 }, // Peak load { duration: "...