perf(mail): kill redundant 30min scan-cron + in-flight scan guard
Backend-Lag-Fix Phase 1 — entlastet die CPU-Dauerschleife im Mail-Stack: - delete mail-scan-cron.ts: der 30-Min-Nitro-Cron scannte alle User parallel (Promise.allSettled) und war redundant zum IMAP-IDLE-Daemon (Single Source of Truth). Reine Dauerlast ohne Mehrwert. - imap-idle: In-Flight-Guard (scanInFlight + coalescePending). triggerScan ist jetzt re-entry-safe — pro Connection max. 1 aktiver + 1 pending Scan statt bis zu 8 gestapelt pro 2-Min-NOOP-Tick. Gilt für NOOP + exists-Event. - plan-features: Pro mailAgents 3->2 (+ Math.min-Hack in coach/message aufgeräumt). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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@ -477,9 +477,38 @@ const sessions = new Map();
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let shuttingDown = false;
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// ─── Scan-Trigger ─────────────────────────────────────────────────────────────
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// ─── In-Flight-Guard ─────────────────────────────────────────────────────────
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// Verhindert gestapelte scan-internal-Aufrufe für dieselbe Connection.
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//
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// scanInFlight: Map<connId, boolean> — läuft gerade ein Scan?
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// coalescePending: Map<connId, boolean> — kam während des laufenden Scans
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// ein weiterer Trigger? Wenn ja, einmalig nachholen.
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//
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// Verhalten:
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// - Kein laufender Scan: sofort feuern, inFlight=true setzen
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// - Läuft Scan bereits: pending=true setzen (coalesce — nicht stapeln)
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// - Nach Scan-Ende: wenn pending=true → einen weiteren Scan starten,
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// dann pending=false. Maximal EIN gestapelter Trigger bleibt hängen.
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//
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// Gilt für NOOP-Tick UND exists-Event (beide rufen triggerScan auf).
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const scanInFlight = new Map(); // Map<connId, boolean>
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const coalescePending = new Map(); // Map<connId, boolean>
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async function triggerScan(conn) {
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const connId = conn.id;
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if (scanInFlight.get(connId)) {
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// Scan läuft bereits — coalescer merkt sich den Wunsch, stapelt nicht
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if (!coalescePending.get(connId)) {
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log(conn.email, "scan-trigger coalesced (in-flight)");
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coalescePending.set(connId, true);
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}
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return;
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}
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scanInFlight.set(connId, true);
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try {
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const res = await fetch(`${BACKEND_URL}/api/mail/scan-internal`, {
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method: "POST",
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@ -500,6 +529,15 @@ async function triggerScan(conn) {
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}
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} catch (err) {
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logError(conn.email, "scan-trigger failed", err);
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} finally {
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scanInFlight.set(connId, false);
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// Coalesced Trigger nachholen: einmalig, fire-and-forget
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if (coalescePending.get(connId)) {
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coalescePending.set(connId, false);
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log(conn.email, "scan-trigger coalesced fire (post-flight)");
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triggerScan(conn).catch(() => {});
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}
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}
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}
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@ -329,10 +329,7 @@ function generatePlanDetails(): string {
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? "(rückfüllbar – Slot wird wieder frei wenn die Domain global aufgenommen ODER von der Community abgelehnt wurde)"
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: "(NICHT rückfüllbar – einmal belegt, bleibt für immer belegt)";
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// Hinweis: PLAN_LIMITS.pro.mailAgents = 3 widerspricht aktuell dem Briefing
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// (Pro = max 2 Mail-Konten). rebreak-backend muss das angleichen — Lyra
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// beschreibt hier den Briefing-Stand (2 Konten Pro), damit User korrekt informiert wird.
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const proMailCount = Math.min(pro.mailAgents, 2);
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const proMailCount = pro.mailAgents;
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const legendMailFairUse = 10;
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return `Pro (3,99 € / Monat — Stripe-Web-Checkout, kein In-App-Kauf):
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@ -1,37 +0,0 @@
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import { consola } from "consola";
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import { getAllActiveMailUserIds } from "../db/mail";
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const SCAN_INTERVAL = 30 * 60 * 1000; // every 30 minutes (proxy EXISTS handles real-time)
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export default defineNitroPlugin((nitro) => {
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if (import.meta.dev) return;
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consola.info("[mail-scan-cron] Starting – scanning due accounts every 30 min");
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const interval = setInterval(runScan, SCAN_INTERVAL);
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nitro.hooks.hook("close", () => clearInterval(interval));
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});
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async function runScan() {
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let userIds: string[];
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try {
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userIds = await getAllActiveMailUserIds();
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} catch {
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return;
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}
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if (userIds.length === 0) return;
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const adminSecret = process.env.NUXT_ADMIN_SECRET || process.env.ADMIN_SECRET;
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if (!adminSecret) return;
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await Promise.allSettled(
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userIds.map((userId) =>
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$fetch("/api/mail/scan-internal", {
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method: "POST",
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headers: { "x-admin-secret": adminSecret },
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body: { userId },
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}).catch(() => {})
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)
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);
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}
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@ -82,7 +82,7 @@ export const PLAN_LIMITS: Record<Exclude<Plan, "free">, PlanLimits> = {
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pro: {
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customDomains: 10,
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domainRefill: true,
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mailAgents: 3,
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mailAgents: 2,
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mailIntervalOptions: [1, 4, 8],
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globalBlocklist: "full",
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canPost: true,
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