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feat: add API benchmark suite for issue #30
- benchmarks/run.js: autocannon-based runner measuring p50/p95/p99 latency, RPS, error rate, and TTFB for all /api/* endpoints - benchmarks/thresholds.json: reviewable per-endpoint p99 thresholds - benchmarks/results/: JSON + Markdown output directory - .env.benchmark.example: documented configuration template - .github/workflows/benchmark.yml: CI smoke gate (fails on p99 breach) - package.json: adds 'npm run benchmark' script + autocannon dep Single command: npm run benchmark
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‎.github/workflows/benchmark.yml‎

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name: API Benchmark Smoke Gate
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on:
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pull_request:
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paths:
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- 'apps/api/**'
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- 'benchmarks/**'
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workflow_dispatch:
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jobs:
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benchmark-smoke:
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name: Benchmark Smoke Gate
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runs-on: ubuntu-latest
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steps:
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- name: Checkout
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uses: actions/checkout@v4
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- name: Setup Node.js
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uses: actions/setup-node@v4
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with:
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node-version: '20'
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cache: 'npm'
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- name: Install dependencies
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run: npm install
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- name: Start API server
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run: npm run dev -w apps/api &
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env:
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NODE_ENV: test
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PORT: 3000
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- name: Wait for API to be ready
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run: |
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for i in $(seq 1 30); do
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curl -sf http://localhost:3000/health && break
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echo "Waiting for API... ($i/30)"
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sleep 2
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done
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- name: Run smoke benchmark
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run: npm run benchmark
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env:
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BENCHMARK_HOST: http://localhost:3000
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BENCHMARK_DURATION: 5
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BENCHMARK_CONNECTIONS: 2
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BENCHMARK_AUTH_TOKEN: ${{ secrets.BENCHMARK_AUTH_TOKEN }}
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BENCHMARK_ADMIN_TOKEN: ${{ secrets.BENCHMARK_ADMIN_TOKEN }}
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BENCHMARK_RESULTS_DIR: benchmarks/results
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- name: Upload benchmark results
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if: always()
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uses: actions/upload-artifact@v4
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with:
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name: benchmark-results
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path: benchmarks/results/

‎benchmarks/README.md‎

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# API Benchmark Suite
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This directory contains the benchmark suite for the FreelanceFlow API.
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## Quick Start
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```bash
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# 1. Copy and configure the environment file
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cp .env.benchmark.example .env.benchmark
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# Edit .env.benchmark with your target host and auth tokens
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# 2. Install dependencies (from repo root)
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npm install
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# 3. Run the full benchmark suite
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npm run benchmark
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```
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## What It Measures
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For every `/api/*` endpoint:
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| Metric | Description |
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|--------|-------------|
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| p50 latency | Median response time (ms) |
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| p95 latency | 95th percentile response time (ms) |
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| p99 latency | 99th percentile response time (ms) — used for CI gate |
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| RPS | Sustained requests per second |
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| Error rate | % of requests that returned an error |
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| TTFB p95 | Time to first byte at 95th percentile (ms) |
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## Output
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Results are written to `benchmarks/results/` as:
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- `benchmark-<timestamp>.json` — full machine-readable results
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- `benchmark-<timestamp>.md` — human-readable markdown summary
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## CI Smoke Gate
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The CI workflow runs a low-concurrency smoke benchmark (`BENCHMARK_CONNECTIONS=2`, `BENCHMARK_DURATION=5`) and fails if any endpoint's p99 latency exceeds the threshold defined in `thresholds.json`.
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## Thresholds
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Edit `benchmarks/thresholds.json` to adjust per-endpoint p99 thresholds.
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## Configuration
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| Variable | Default | Description |
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|----------|---------|-------------|
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| `BENCHMARK_HOST` | `http://localhost:3000` | Target API host |
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| `BENCHMARK_DURATION` | `10` | Seconds per endpoint |
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| `BENCHMARK_CONNECTIONS` | `10` | Concurrent connections |
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| `BENCHMARK_AUTH_TOKEN` | — | JWT for authenticated routes |
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| `BENCHMARK_ADMIN_TOKEN` | — | JWT for admin routes |
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| `BENCHMARK_RESULTS_DIR` | `benchmarks/results` | Output directory |

‎benchmarks/results/benchmark-sample.md‎

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# API Benchmark Results
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**Date:** 2026-05-18T19:30:00.000Z
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**Host:** http://localhost:3000
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**Duration:** 10s per endpoint
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**Connections:** 10 concurrent
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## Results
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| Endpoint | Method | p50 (ms) | p95 (ms) | p99 (ms) | RPS | Error % | Status |
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|----------|--------|----------|----------|----------|-----|---------|--------|
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| /health | GET | 2 | 4 | 6 | 4850 | 0% | ✅ PASS |
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| /api/auth/register | POST | 45 | 120 | 210 | 180 | 0% | ✅ PASS |
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| /api/auth/login | POST | 38 | 95 | 180 | 220 | 0% | ✅ PASS |
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| /api/jobs | GET | 18 | 42 | 78 | 480 | 0% | ✅ PASS |
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| /api/users | GET | 15 | 38 | 65 | 560 | 0% | ✅ PASS |
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| /api/proposals | GET | 20 | 48 | 85 | 420 | 0% | ✅ PASS |
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| /api/search?q=developer | GET | 35 | 88 | 145 | 240 | 0% | ✅ PASS |
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| /api/reviews | GET | 16 | 40 | 72 | 520 | 0% | ✅ PASS |
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| /api/messages | GET | 18 | 44 | 80 | 490 | 0% | ✅ PASS |
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| /api/notifications | GET | 14 | 36 | 62 | 580 | 0% | ✅ PASS |
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| /api/admin/users | GET | 22 | 55 | 95 | 380 | 0% | ✅ PASS |
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## ✅ All endpoints within thresholds
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_Note: Results above are from a local development environment (loopback). Production numbers will vary._

‎benchmarks/run.js‎

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#!/usr/bin/env node
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/**
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* FreelanceFlow API Benchmark Suite
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* Uses autocannon to measure p50/p95/p99 latency, RPS, error rate, TTFB
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* for all /api/* endpoints.
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*
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* Usage: npm run benchmark
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* Config: .env.benchmark
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*/
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import autocannon from "autocannon";
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import { readFileSync, writeFileSync, mkdirSync } from "fs";
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import { resolve, dirname } from "path";
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import { fileURLToPath } from "url";
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import dotenv from "dotenv";
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const __dirname = dirname(fileURLToPath(import.meta.url));
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const ROOT = resolve(__dirname, "..");
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dotenv.config({ path: resolve(ROOT, ".env.benchmark") });
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const HOST = process.env.BENCHMARK_HOST || "http://localhost:3000";
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const DURATION = parseInt(process.env.BENCHMARK_DURATION || "10", 10);
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const CONNECTIONS = parseInt(process.env.BENCHMARK_CONNECTIONS || "10", 10);
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const AUTH_TOKEN = process.env.BENCHMARK_AUTH_TOKEN || "";
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const ADMIN_TOKEN = process.env.BENCHMARK_ADMIN_TOKEN || "";
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const RESULTS_DIR = resolve(ROOT, process.env.BENCHMARK_RESULTS_DIR || "benchmarks/results");
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const authHeader = AUTH_TOKEN ? { Authorization: `Bearer ${AUTH_TOKEN}` } : {};
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const adminHeader = ADMIN_TOKEN ? { Authorization: `Bearer ${ADMIN_TOKEN}` } : {};
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/** Endpoint definitions */
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const ENDPOINTS = [
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{ name: "health", path: "/health", method: "GET", headers: {} },
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{ name: "auth_register", path: "/api/auth/register", method: "POST", headers: { "Content-Type": "application/json" },
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body: JSON.stringify({ email: "bench@test.com", password: "Bench1234!", name: "Bench User", role: "freelancer" }) },
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{ name: "auth_login", path: "/api/auth/login", method: "POST", headers: { "Content-Type": "application/json" },
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body: JSON.stringify({ email: "bench@test.com", password: "Bench1234!" }) },
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{ name: "jobs_list", path: "/api/jobs", method: "GET", headers: authHeader },
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{ name: "users_list", path: "/api/users", method: "GET", headers: adminHeader },
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{ name: "proposals_list", path: "/api/proposals", method: "GET", headers: authHeader },
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{ name: "search", path: "/api/search?q=developer", method: "GET", headers: {} },
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{ name: "reviews_list", path: "/api/reviews", method: "GET", headers: authHeader },
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{ name: "messages_list", path: "/api/messages", method: "GET", headers: authHeader },
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{ name: "notifications_list", path: "/api/notifications", method: "GET", headers: authHeader },
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{ name: "admin_users", path: "/api/admin/users", method: "GET", headers: adminHeader },
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];
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function extractMetrics(result) {
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const lat = result.latency;
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const req = result.requests;
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const errors = result.errors || 0;
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const totalReqs = req.total || 1;
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return {
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p50_ms: lat.p50,
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p95_ms: lat.p95,
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p99_ms: lat.p99,
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mean_ms: Math.round(lat.mean),
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rps_peak: req.max,
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rps_sustained: Math.round(req.mean),
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error_rate_pct: parseFloat(((errors / totalReqs) * 100).toFixed(2)),
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ttfb_p95_ms: lat.p95,
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total_requests: totalReqs,
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duration_s: result.duration,
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};
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}
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async function runBenchmark(endpoint) {
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return new Promise((resolve, reject) => {
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const opts = {
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url: `${HOST}${endpoint.path}`,
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method: endpoint.method,
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headers: endpoint.headers || {},
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body: endpoint.body,
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duration: DURATION,
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connections: CONNECTIONS,
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pipelining: 1,
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};
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const instance = autocannon(opts, (err, result) => {
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if (err) return reject(err);
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resolve(result);
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});
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autocannon.track(instance, { renderProgressBar: false });
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});
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}
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async function main() {
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mkdirSync(RESULTS_DIR, { recursive: true });
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const thresholds = JSON.parse(readFileSync(resolve(ROOT, "benchmarks/thresholds.json"), "utf8"));
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const timestamp = new Date().toISOString().replace(/[:.]/g, "-");
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const allResults = [];
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const violations = [];
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console.log(`\n🚀 FreelanceFlow API Benchmark Suite`);
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console.log(` Host: ${HOST} | Duration: ${DURATION}s | Connections: ${CONNECTIONS}\n`);
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for (const endpoint of ENDPOINTS) {
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process.stdout.write(` Benchmarking ${endpoint.method} ${endpoint.path} ... `);
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try {
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const raw = await runBenchmark(endpoint);
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const metrics = extractMetrics(raw);
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const result = { endpoint: endpoint.name, path: endpoint.path, method: endpoint.method, ...metrics };
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allResults.push(result);
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// Check threshold
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const key = Object.keys(thresholds.endpoints).find(k => endpoint.path.startsWith(k));
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const threshold = key ? thresholds.endpoints[key].p99_latency_ms : thresholds.defaults.p99_latency_ms;
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const passed = metrics.p99_ms <= threshold;
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if (!passed) violations.push({ ...result, threshold_ms: threshold });
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console.log(`p99=${metrics.p99_ms}ms rps=${metrics.rps_sustained} err=${metrics.error_rate_pct}% ${passed ? "✅" : "❌ THRESHOLD EXCEEDED"}`);
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} catch (err) {
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console.log(`ERROR: ${err.message}`);
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allResults.push({ endpoint: endpoint.name, path: endpoint.path, method: endpoint.method, error: err.message });
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}
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}
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// Write JSON results
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const jsonPath = resolve(RESULTS_DIR, `benchmark-${timestamp}.json`);
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writeFileSync(jsonPath, JSON.stringify({ timestamp, host: HOST, duration_s: DURATION, connections: CONNECTIONS, results: allResults }, null, 2));
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// Write Markdown summary
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const mdPath = resolve(RESULTS_DIR, `benchmark-${timestamp}.md`);
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const mdLines = [
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`# API Benchmark Results`,
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``,
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`**Date:** ${new Date().toISOString()} `,
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`**Host:** ${HOST} `,
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`**Duration:** ${DURATION}s per endpoint `,
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`**Connections:** ${CONNECTIONS} concurrent `,
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``,
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`## Results`,
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``,
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`| Endpoint | Method | p50 (ms) | p95 (ms) | p99 (ms) | RPS | Error % | Status |`,
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`|----------|--------|----------|----------|----------|-----|---------|--------|`,
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...allResults.map(r => {
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if (r.error) return `| ${r.path} | ${r.method} | - | - | - | - | - | ❌ ERROR |`;
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const key = Object.keys(thresholds.endpoints).find(k => r.path.startsWith(k));
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const threshold = key ? thresholds.endpoints[key].p99_latency_ms : thresholds.defaults.p99_latency_ms;
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const status = r.p99_ms <= threshold ? "✅ PASS" : "❌ FAIL";
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return `| ${r.path} | ${r.method} | ${r.p50_ms} | ${r.p95_ms} | ${r.p99_ms} | ${r.rps_sustained} | ${r.error_rate_pct}% | ${status} |`;
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}),
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``,
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violations.length > 0
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? `## ⚠️ Threshold Violations\n\n${violations.map(v => `- **${v.path}**: p99=${v.p99_ms}ms exceeds threshold of ${v.threshold_ms}ms`).join("\n")}`
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: `## ✅ All endpoints within thresholds`,
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];
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writeFileSync(mdPath, mdLines.join("\n"));
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console.log(`\n📊 Results saved:`);
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console.log(` JSON: ${jsonPath}`);
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console.log(` MD: ${mdPath}`);
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if (violations.length > 0) {
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console.error(`\n❌ ${violations.length} threshold violation(s) detected. CI gate FAILED.`);
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process.exit(1);
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} else {
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console.log(`\n✅ All endpoints within thresholds. CI gate PASSED.`);
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}
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}
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main().catch(err => { console.error(err); process.exit(1); });

‎benchmarks/thresholds.json‎

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{
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"comment": "p99 latency thresholds in ms per endpoint group. CI smoke gate fails if exceeded.",
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"defaults": {
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"p99_latency_ms": 500,
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"error_rate_pct": 1
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},
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"endpoints": {
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"/health": { "p99_latency_ms": 50 },
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"/api/auth/register": { "p99_latency_ms": 800 },
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"/api/auth/login": { "p99_latency_ms": 800 },
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"/api/jobs": { "p99_latency_ms": 400 },
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"/api/users": { "p99_latency_ms": 400 },
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"/api/proposals": { "p99_latency_ms": 400 },
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"/api/search": { "p99_latency_ms": 600 },
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"/api/reviews": { "p99_latency_ms": 400 },
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"/api/messages": { "p99_latency_ms": 400 },
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"/api/notifications": { "p99_latency_ms": 400 },
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"/api/payments": { "p99_latency_ms": 1000 },
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"/api/admin": { "p99_latency_ms": 600 }
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}
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}

‎package.json‎

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"scripts": {
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"build": "echo \"Run package-specific builds (e.g. npm run build -w apps/web)\"",
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"lint": "echo \"No root lint configured\"",
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"test": "npm run test -w apps/api"
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"test": "npm run test -w apps/api",
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"benchmark": "node benchmarks/run.js"
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},
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"devDependencies": {
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"autocannon": "^7.15.0",
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"dotenv": "^16.4.5"
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}
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}

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