Add load test harness and update documentation with load test results

loadtests/load-test.js

@@ -0,0 +1,60 @@
+import http from 'k6/http';
+import { sleep } from 'k6';
+import { Rate, Trend } from 'k6/metrics';
+
+const getProduceSuccessRate = new Rate('GetProduceOK');
+const getProduceTimingTrend = new Trend('GetProduceTiming');
+
+const addProduceSuccessRate = new Rate('AddProduceOK');
+const addProduceTimingTrend = new Trend('AddProduceTiming');
+
+export const options = {
+	scenarios: {
+		ramp_to_load: {
+			executor: 'ramping-arrival-rate',
+			startRate: 0,
+			preAllocatedVUs: 200,
+			maxVUs: 250,
+			stages: [
+				{ duration: '4m', target: 50, },
+			],
+		},
+		maintain_load: {
+			executor: 'constant-arrival-rate',
+			rate: 50,
+			timeUnit: '1s',
+			startTime: '4m',
+			duration: '1m',
+			preAllocatedVUs: 200,
+			maxVUs: 250,
+		},
+	},
+	thresholds: {
+		GetProduceOK: ['rate==1'],
+		GetProduceTiming: ['p(90)<100','p(95)<200'],
+
+		AddProduceOK: ['rate==1'],
+		AddProduceTiming: ['p(90)<100','p(95)<200'],
+	},
+}
+
+export default function() {
+	const id = `${__ITER}-${__VU}`
+
+	const addRes = http.post('http://localhost:3000/v1/produce', JSON.stringify([{
+		code: `code-${id}`,
+		name: `name-${id}`,
+		price: {
+			amount: 100,
+			currency: "USD"
+		}
+	}]))
+
+	const getRes = http.get('http://localhost:3000/v1/produce')
+
+	addProduceSuccessRate.add(addRes.status < 300)
+	addProduceTimingTrend.add(addRes.timings.duration)
+
+	getProduceSuccessRate.add(getRes.status < 300)
+	getProduceTimingTrend.add(getRes.timings.duration)
+}