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test(load): k6 script for the unified apps/api server

Browse source 
The pre-launch consolidation collapsed 17+ per-product backends into
the single Hono/Bun process at apps/api. That makes apps/api the
single point of failure for every authenticated module call the
unified Mana web app makes — a missing index, a hot-path allocation
in auth middleware, or rate-limiter contention degrades all 16
modules at once. The other scripts in load-tests/ already cover
mana-auth, mana-sync, mana-llm and the SvelteKit frontends, but
apps/api itself was unmeasured. This is that missing piece.

What it tests
-------------
A weighted mixed workload that walks the full middleware stack
(CORS → request logger → rate limit → auth → router → handler)
plus a representative range of handler shapes:

  25%  GET /health                            (no auth, baseline)
  20%  GET /api/v1/moodlit/presets            (auth + in-memory return)
  15%  GET /api/v1/chat/models                (auth + DB read)
  20%  POST /api/v1/calendar/events/expand    (auth + Zod + RRULE compute)
  12%  POST /api/v1/todo/compute/next-occurrence
                                              (auth + Zod + rrule lib)
   8%  POST /api/v1/todo/compute/validate     (auth + Zod + validation)

Deliberately no write endpoints — those would conflate write
amplification with API-server cost. The compute routes here all run
in <50ms warm; what we're measuring is the overhead the unified
server adds on top of pure handler work.

Per-route-class p95 budgets via tags:

  health      < 100ms
  authed_get  < 300ms
  authed_post < 500ms
  global      p95 < 500ms, p99 < 2s

Application-level error rate (4xx + 5xx + check failures) must stay
under 1% — exit code 1 otherwise, so it's CI-gateable.

Auth setup
----------
apps/api requires JWT on every /api/* route. setup() acquires a
token once before VUs start hammering and shares it for the run.
Three sources tried in order:

  1. $MANA_API_TOKEN  (CI passes a pre-minted token)
  2. login at $TEST_EMAIL / $TEST_PASSWORD
  3. register a fresh account on the fly

Bails with a clear error message if all three fail.

Load profile
------------
4 minute total: 30s warmup → 2m sustained @ 50 VUs → 1m peak @ 100 VUs
→ 30s cooldown. Override with --vus / --duration as usual.

Closes item #23 in docs/REFACTORING_AUDIT_2026_04.md.

Follow-ups not in this commit:
  - Wire into .github/workflows/daily-tests.yml (requires standing
    up the apps/api stack in the runner — bigger lift, separate PR)
  - Per-module thresholds once we have a few real runs and know
    where the natural baseline sits

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Till JS 2026-04-09 12:27:54 +02:00
parent 5052926481
commit 7f6b41654e
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21
load-tests/README.md
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@ -18,9 +18,15 @@ brew install k6
# Gegen lokale Umgebung # Gegen lokale Umgebung
k6 run load-tests/web-apps.js k6 run load-tests/web-apps.js
k6 run load-tests/auth-api.js k6 run load-tests/auth-api.js
k6 run load-tests/api.js
k6 run load-tests/sync-websocket.js k6 run load-tests/sync-websocket.js
k6 run load-tests/llm-ollama.js k6 run load-tests/llm-ollama.js
# api.js braucht ein gültiges JWT — entweder via $MANA_API_TOKEN
# oder es loggt sich mit den TEST_EMAIL/TEST_PASSWORD env vars ein
# (default: loadtest-api@mana.test / LoadTestApi123!).
k6 run -e MANA_API_TOKEN=eyJhbGc... load-tests/api.js
# Gegen Produktion (vorsichtig!) # Gegen Produktion (vorsichtig!)
k6 run -e BASE_URL=https://mana.how load-tests/web-apps.js k6 run -e BASE_URL=https://mana.how load-tests/web-apps.js
@ -37,9 +43,24 @@ k6 run --out json=results.json load-tests/web-apps.js
|--------|------|-------------|-------| |--------|------|-------------|-------|
| `web-apps.js` | SvelteKit Frontends (HTML-Responses) | 10→50→10 | 5 min | | `web-apps.js` | SvelteKit Frontends (HTML-Responses) | 10→50→10 | 5 min |
| `auth-api.js` | Login, Register, Token Validation | 5→20→5 | 4 min | | `auth-api.js` | Login, Register, Token Validation | 5→20→5 | 4 min |
| `api.js` | Unified `apps/api` Hono server (16 Module) — gemixte Workload mit Auth, Compute & Validation | 10→50→100→0 | 4 min |
| `sync-websocket.js` | mana-sync WebSocket Connections | 10→30→10 | 5 min | | `sync-websocket.js` | mana-sync WebSocket Connections | 10→30→10 | 5 min |
| `llm-ollama.js` | Ollama Chat Completions | 1→3→1 | 3 min | | `llm-ollama.js` | Ollama Chat Completions | 1→3→1 | 3 min |
### `api.js` Thresholds
Pro Route-Klasse hat das Script eigene p95-Budgets über `tags`:
| Klasse | Endpoints | p95-Budget |
|--------|-----------|------------|
| `health` | `GET /health` | < 100ms |
| `authed_get` | `GET /api/v1/moodlit/presets`, `GET /api/v1/chat/models` | < 300ms |
| `authed_post` | `POST /api/v1/calendar/events/expand`, `POST /api/v1/todo/compute/*` | < 500ms |
| Global | alle Requests aggregiert | p95 < 500ms, p99 < 2s |
Application-level error rate (4xx + 5xx + Check-Failures) muss unter
1% bleiben, sonst exit-code 1 → CI-Build bricht.
## Metriken interpretieren ## Metriken interpretieren
| Metrik | Gut | Akzeptabel | Schlecht | | Metrik | Gut | Akzeptabel | Schlecht |

281
load-tests/api.js Normal file
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@ -0,0 +1,281 @@
/* eslint-disable no-undef */
/**
* Load test for `apps/api` — the unified Hono/Bun API server that hosts
* all 16 product compute modules (calendar, todo, chat, picture, planta,
* nutriphi, news, traces, moodlit, presi, music, contacts, storage,
* context, guides, research) on a single port.
*
* Why this script exists
* ----------------------
* The pre-launch consolidation collapsed 17+ per-product backends into
* one process. That makes apps/api the single point of failure for
* every authenticated module call the unified Mana web app makes.
* If a single Drizzle query is missing an index, or the auth middleware
* has a hot-path allocation, or the rate limiter contends on a shared
* map — every module degrades together. The other load-tests in this
* directory cover mana-auth, mana-sync, mana-llm, and the SvelteKit
* frontends, but apps/api itself was unmeasured. This is that missing
* piece.
*
* What it tests
* -------------
* A weighted mixed workload that exercises the full middleware stack
* (CORS → request logger → rate limit → auth → router → handler) plus
* a representative range of handler shapes:
*
* - 25% GET /health (no auth, baseline)
* - 20% GET /api/v1/moodlit/presets (auth + in-memory return)
* - 15% GET /api/v1/chat/models (auth + DB read of models)
* - 20% POST /api/v1/calendar/events/expand (auth + Zod + RRULE compute)
* - 12% POST /api/v1/todo/compute/next-occurrence
* (auth + Zod + rrule lib)
* - 8% POST /api/v1/todo/compute/validate (auth + Zod + rrule lib)
*
* No write endpoints are exercised — those would need cleanup and would
* conflate write-amplification load with API-server cost. The compute
* routes here all run in <50ms on a warm machine; what we're measuring
* is the overhead the unified server adds on top of pure handler work.
*
* Authentication
* --------------
* apps/api requires JWT auth on every /api/* route. setup() acquires a
* token once before the VUs start hammering and shares it for the
* duration of the run. Three sources, in order:
*
* 1. $MANA_API_TOKEN — provide a pre-minted token (CI-friendly)
* 2. login a fresh test account at $TEST_EMAIL / $TEST_PASSWORD
* 3. register a new account on the fly with the same credentials
*
* The script bails with a clear error if none of these work.
*
* Usage
* -----
* # local
* k6 run load-tests/api.js
*
* # against staging
* k6 run -e API_URL=https://api.mana.how -e AUTH_URL=https://auth.mana.how \
* -e MANA_API_TOKEN=eyJhbGc... \
* load-tests/api.js
*
* # heavier
* k6 run --vus 200 --duration 5m load-tests/api.js
*
* # JSON output for Grafana
* k6 run --out json=api-load.json load-tests/api.js
*/
import http from 'k6/http';
import { check, sleep, group, fail } from 'k6';
import { Rate, Trend } from 'k6/metrics';
const errorRate = new Rate('errors');
const authedLatency = new Trend('authed_request_duration');
const API_URL = __ENV.API_URL || 'http://localhost:3060';
const AUTH_URL = __ENV.AUTH_URL || 'http://localhost:3001';
const TEST_EMAIL = __ENV.TEST_EMAIL || 'loadtest-api@mana.test';
const TEST_PASSWORD = __ENV.TEST_PASSWORD || 'LoadTestApi123!';
export const options = {
stages: [
{ duration: '30s', target: 10 }, // warmup
{ duration: '2m', target: 50 }, // sustained
{ duration: '1m', target: 100 }, // peak
{ duration: '30s', target: 0 }, // cooldown
],
thresholds: {
// Overall — health-checks pull the average way down so the global
// p95 should sit below 500ms.
http_req_duration: ['p(95)<500', 'p(99)<2000'],
// Per-route-class budgets — these are the real signal.
'http_req_duration{kind:health}': ['p(95)<100'],
'http_req_duration{kind:authed_get}': ['p(95)<300'],
'http_req_duration{kind:authed_post}': ['p(95)<500'],
// Application-level error rate (4xx + 5xx + check failures).
errors: ['rate<0.01'],
// Setup must succeed — if we can't even acquire a token, abort.
'http_req_failed{kind:setup}': ['rate<0.01'],
},
};
/**
* Acquire a JWT for the load run. Runs once before any VU starts.
*/
export function setup() {
const envToken = __ENV.MANA_API_TOKEN;
if (envToken) {
console.log('[setup] using $MANA_API_TOKEN from env');
return { token: envToken };
}
// Try login first — works on subsequent runs after the first
// register has seeded the test account.
let res = http.post(
`${AUTH_URL}/api/v1/auth/login`,
JSON.stringify({ email: TEST_EMAIL, password: TEST_PASSWORD }),
{
headers: { 'Content-Type': 'application/json' },
tags: { kind: 'setup' },
}
);
if (res.status === 200) {
const token = res.json('accessToken');
if (token) {
console.log(`[setup] logged in as ${TEST_EMAIL}`);
return { token };
}
}
// Login failed — first run, register the account.
res = http.post(
`${AUTH_URL}/api/v1/auth/register`,
JSON.stringify({
email: TEST_EMAIL,
password: TEST_PASSWORD,
name: 'API Load Test',
}),
{
headers: { 'Content-Type': 'application/json' },
tags: { kind: 'setup' },
}
);
if (res.status === 200 || res.status === 201) {
const token = res.json('accessToken');
if (token) {
console.log(`[setup] registered new account ${TEST_EMAIL}`);
return { token };
}
}
fail(`could not acquire test token — login=${res.status} body=${String(res.body).slice(0, 200)}`);
}
export default function (data) {
const headers = {
'Content-Type': 'application/json',
Authorization: `Bearer ${data.token}`,
};
const roll = Math.random();
if (roll < 0.25) {
// 25% — Baseline. /health has no auth, no DB, no module — measures
// pure middleware cost (CORS + request logger + 404 routing).
group('health', () => {
const res = http.get(`${API_URL}/health`, { tags: { kind: 'health' } });
const ok = check(res, {
'health 200': (r) => r.status === 200,
});
errorRate.add(!ok);
});
} else if (roll < 0.45) {
// 20% — Authed GET, in-memory response. Tests auth middleware
// overhead + JSON serialization on the hot path.
group('moodlit_presets', () => {
const res = http.get(`${API_URL}/api/v1/moodlit/presets`, {
headers,
tags: { kind: 'authed_get' },
});
authedLatency.add(res.timings.duration);
const ok = check(res, {
'presets 200': (r) => r.status === 200,
'presets is array': (r) => {
try {
const body = r.json();
return Array.isArray(body) && body.length > 0;
} catch {
return false;
}
},
});
errorRate.add(!ok);
});
} else if (roll < 0.6) {
// 15% — Authed GET, DB-backed read. The chat models endpoint
// returns the catalogue from postgres — exercises the connection
// pool and a small SELECT.
group('chat_models', () => {
const res = http.get(`${API_URL}/api/v1/chat/models`, {
headers,
tags: { kind: 'authed_get' },
});
authedLatency.add(res.timings.duration);
const ok = check(res, {
'models 200': (r) => r.status === 200,
});
errorRate.add(!ok);
});
} else if (roll < 0.8) {
// 20% — Authed POST, Zod validation, pure compute. The expand
// route walks the RRULE manually and builds an array of ISO
// timestamps; no DB, no I/O. This is what an authenticated POST
// to apps/api should cost in the ideal case.
group('calendar_expand', () => {
const res = http.post(
`${API_URL}/api/v1/calendar/events/expand`,
JSON.stringify({
rrule: 'FREQ=WEEKLY;BYDAY=MO,WE,FR',
dtstart: '2026-01-01T09:00:00Z',
until: '2026-04-01T00:00:00Z',
}),
{ headers, tags: { kind: 'authed_post' } }
);
authedLatency.add(res.timings.duration);
const ok = check(res, {
'expand 200': (r) => r.status === 200,
'expand returns occurrences': (r) => {
try {
return Array.isArray(r.json('occurrences'));
} catch {
return false;
}
},
});
errorRate.add(!ok);
});
} else if (roll < 0.92) {
// 12% — Same shape as expand but uses the rrule library instead
// of the hand-rolled walker. Catches the case where the rrule
// dependency is the bottleneck rather than our own code.
group('todo_next_occurrence', () => {
const res = http.post(
`${API_URL}/api/v1/todo/compute/next-occurrence`,
JSON.stringify({
rrule: 'FREQ=DAILY;COUNT=30',
after: '2026-04-09T00:00:00Z',
}),
{ headers, tags: { kind: 'authed_post' } }
);
authedLatency.add(res.timings.duration);
const ok = check(res, {
'next-occurrence 200': (r) => r.status === 200,
});
errorRate.add(!ok);
});
} else {
// 8% — Tiny compute path that mostly exercises the validation
// branch and Zod schema parsing.
group('todo_validate_rrule', () => {
const res = http.post(
`${API_URL}/api/v1/todo/compute/validate`,
JSON.stringify({ rrule: 'FREQ=MONTHLY;BYMONTHDAY=15' }),
{ headers, tags: { kind: 'authed_post' } }
);
authedLatency.add(res.timings.duration);
const ok = check(res, {
'validate 200': (r) => r.status === 200,
});
errorRate.add(!ok);
});
}
// Sleep 0.5–2s between iterations to keep the VU count translatable
// to "concurrent users" rather than "max requests/sec".
sleep(Math.random() * 1.5 + 0.5);
}