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Apple ef3473db21 snapshot: NODE1 production state 2026-02-09 
Complete snapshot of /opt/microdao-daarion/ from NODE1 (144.76.224.179).
This represents the actual running production code that has diverged
significantly from the previous main branch.

Key changes from old main:
- Gateway (http_api.py): expanded from ~40KB to 164KB with full agent support
- Router: new /v1/agents/{id}/infer endpoint with vision + DeepSeek routing
- Behavior Policy: SOWA v2.2 (3-level: FULL/ACK/SILENT)
- Agent Registry: config/agent_registry.yml as single source of truth
- 13 agents configured (was 3)
- Memory service integration
- CrewAI teams and roles

Excluded from snapshot: venv/, .env, data/, backups, .tgz archives

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-02-09 08:46:46 -08:00

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🔹 Wallet Service
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🔹 Agent Orchestrator
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5. Agents Scaling
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5.1 Типи агентів
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5.2 Як вони масштабуються
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6.1 Кластер
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6.2 Потоки (streams)
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6.3 Failure Scenarios
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7.1 Архітектура
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7.2 Таблиці з високими вимогами до консистентності
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8. Outbox Pattern Scaling
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8.1 Worker Pool
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8.2 Guarantees
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8.3 Failure Mode
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9.1 Incoming Webhooks
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9.2 Oracle bursts
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10. Wallet Scaling &amp; RWA
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10.1 Ключові вимоги
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10.2 Autoscaling Logic
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11. Scaling Frontend
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11.1 Static hosting
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11.2 Global edge distribution
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12.1 API Layer
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12.2 Postgres
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12.3 NATS
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12.4 Agents
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12.5 Embassy
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12.6 Wallet
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<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#131-scenarios" class="md-nav__link">
<span class="md-ellipsis">
13.1 Scenarios
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#132-recovery-plan" class="md-nav__link">
<span class="md-ellipsis">
13.2 Recovery Plan
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#133-dr-tests" class="md-nav__link">
<span class="md-ellipsis">
13.3 DR Tests
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#14-benchmark-targets" class="md-nav__link">
<span class="md-ellipsis">
14. Benchmark Targets
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#15-cursor" class="md-nav__link">
<span class="md-ellipsis">
15. Завдання для Cursor
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#16-summary" class="md-nav__link">
<span class="md-ellipsis">
16. Summary
</span>
</a>
</li>
</ul>
</nav>
</div>
</div>
</div>
<div class="md-content" data-md-component="content">
<article class="md-content__inner md-typeset">
<h1 id="29-scaling-high-availability-microdao">29 — Scaling &amp; High Availability (MicroDAO)<a class="headerlink" href="#29-scaling-high-availability-microdao" title="Permanent link">&para;</a></h1>
<p><em>Масштабування, відмовостійкість, балансування навантаження, кластеризація сервісів DAARION.city / microDAO / Embassy / Wallet / Agents / Event Bus</em></p>
<p>Це документ виробничого класу, який потрібний для:</p>
<ul>
<li>архітекторів,</li>
<li>SRE,</li>
<li>DevOps,</li>
<li>інженерів, що відповідають за HA (High Availability),</li>
<li>аудиторів, які перевіряють стійкість платформи.</li>
</ul>
<p>Він відповідає на питання:</p>
<ul>
<li>як масштабуються сервіси;</li>
<li>як забезпечується відмовостійкість;</li>
<li>як працюють кластери (Postgres, NATS, агентна мережа);</li>
<li>як працює автоматичне масштабування;</li>
<li>як відбувається failover;</li>
<li>як відновлюється місто після аварій.</li>
</ul>
<hr />
<h2 id="1-objectives">1. Objectives<a class="headerlink" href="#1-objectives" title="Permanent link">&para;</a></h2>
<p>Платформа DAARION.city має підтримувати:</p>
<ol>
<li>
<p><strong>Високу доступність (HA)</strong>
SLA: 99.5%–99.9% залежно від сервісу.</p>
</li>
<li>
<p><strong>Горизонтальне масштабування</strong>
Чат, агенти, Embassy події, обробка RWA, NATS — мають масштабуватись окремо.</p>
</li>
<li>
<p><strong>Event-driven архітектуру</strong>
Потоки через NATS/JetStream.</p>
</li>
<li>
<p><strong>Автоматичне відновлення після збоїв (self-healing)</strong>.</p>
</li>
<li>
<p><strong>Zero-downtime деплой</strong>.</p>
</li>
</ol>
<hr />
<h2 id="2-high-level-architecture-overview">2. High-level Architecture Overview<a class="headerlink" href="#2-high-level-architecture-overview" title="Permanent link">&para;</a></h2>
<div class="codehilite"><pre><span></span><code> ┌─────────────────────────┐
│ Load Balancer │
└──────────┬──────────────┘
│
┌─────────────┴──────────────┐
│ API Gateway (PEP) │
└─────────────┬──────────────┘
│
┌──────────────┬────────────┬──────────────┐
│ │ │ │
Messaging Agents Embassy Wallet/RWA
Service Runtime Gateway Service
(stateless) (scalable) (stateless) (state + events)
┌────────────────┐
│ NATS Cluster │
└────────────────┘
│
┌───────────────────┐
│ Postgres HA │
└───────────────────┘
</code></pre></div>
<p>Основний принцип — <strong>кожен домен масштабується автономно</strong>.</p>
<hr />
<h2 id="3-api-layer-scaling">3. API Layer Scaling<a class="headerlink" href="#3-api-layer-scaling" title="Permanent link">&para;</a></h2>
<h3 id="31-api-gateway-edge-functions">3.1 API Gateway / Edge Functions<a class="headerlink" href="#31-api-gateway-edge-functions" title="Permanent link">&para;</a></h3>
<ul>
<li>Stateless</li>
<li>Горизонтальне масштабування без обмежень</li>
<li>Auto-scaling подіями:</li>
<li>RPS,</li>
<li>latency,</li>
<li>CPU,</li>
<li>queue length</li>
</ul>
<h3 id="32-failover">3.2 Failover<a class="headerlink" href="#32-failover" title="Permanent link">&para;</a></h3>
<ul>
<li>Health-check endpoints</li>
<li>LB прибирає unhealthy інстанси</li>
<li>Blue-Green або Canary rollout</li>
</ul>
<hr />
<h2 id="4-backend-domain-services-scaling">4. Backend Domain Services Scaling<a class="headerlink" href="#4-backend-domain-services-scaling" title="Permanent link">&para;</a></h2>
<p>Статус сервісів DAARION:</p>
<table>
<thead>
<tr>
<th>Service</th>
<th>State</th>
<th>Scale Mode</th>
</tr>
</thead>
<tbody>
<tr>
<td>Messaging</td>
<td>Stateless</td>
<td>Horizontal</td>
</tr>
<tr>
<td>Projects/Tasks</td>
<td>Stateless</td>
<td>Horizontal</td>
</tr>
<tr>
<td>Agent Orchestrator</td>
<td>Stateful (DB)</td>
<td>Horizontal (idempotent processing)</td>
</tr>
<tr>
<td>Wallet</td>
<td>Stateful</td>
<td>Horizontal (through DB locking, NATS ordering)</td>
</tr>
<tr>
<td>Embassy</td>
<td>Stateless</td>
<td>Horizontal</td>
</tr>
<tr>
<td>Telemetry</td>
<td>Stateless</td>
<td>Horizontal</td>
</tr>
</tbody>
</table>
<h3 id="41-stateless-services">4.1 Stateless Services<a class="headerlink" href="#41-stateless-services" title="Permanent link">&para;</a></h3>
<ul>
<li>Messaging</li>
<li>Channels</li>
<li>Projects</li>
<li>Embassy Gateway</li>
<li>Telemetry</li>
<li>Governance API</li>
</ul>
<p>Масштабуються <strong>лінійно</strong> кількістю інстансів.</p>
<h3 id="42-stateful-services">4.2 Stateful Services<a class="headerlink" href="#42-stateful-services" title="Permanent link">&para;</a></h3>
<h4 id="wallet-service">🔹 Wallet Service<a class="headerlink" href="#wallet-service" title="Permanent link">&para;</a></h4>
<p>Потребує:</p>
<ul>
<li>row-level locks для <code>payout.claim</code></li>
<li>idempotent <code>payout.generated</code></li>
<li>deduplicated NATS consumer</li>
</ul>
<h4 id="agent-orchestrator">🔹 Agent Orchestrator<a class="headerlink" href="#agent-orchestrator" title="Permanent link">&para;</a></h4>
<p>Потребує:</p>
<ul>
<li>«at least once» NATS delivery</li>
<li>run-idempotency (<code>agent_runs.id</code>)</li>
<li>partitioning agent runs</li>
</ul>
<hr />
<h2 id="5-agents-scaling">5. Agents Scaling<a class="headerlink" href="#5-agents-scaling" title="Permanent link">&para;</a></h2>
<h3 id="51">5.1 Типи агентів<a class="headerlink" href="#51" title="Permanent link">&para;</a></h3>
<ol>
<li><strong>Private agents (per-user/team)</strong></li>
<li><strong>Global agents (Router / Planner / Observer)</strong></li>
<li><strong>Embassy agents (interpreters for RWA)</strong></li>
</ol>
<h3 id="52">5.2 Як вони масштабуються<a class="headerlink" href="#52" title="Permanent link">&para;</a></h3>
<div class="codehilite"><pre><span></span><code>User → API → enqueue → Agent Runtime Pool
</code></pre></div>
<p>Agent Runtime Pool:</p>
<ul>
<li>десятки/сотні ізольованих воркерів;</li>
<li>один агент run не блокує інші;</li>
<li>автоматичний autoscaling від:</li>
<li>queue depth,</li>
<li>throughput,</li>
<li>LLM latency.</li>
</ul>
<h3 id="53-isolation-model">5.3 Isolation Model<a class="headerlink" href="#53-isolation-model" title="Permanent link">&para;</a></h3>
<p>Для кожного агентного run:</p>
<ul>
<li>окремий підпроцес / worker / container</li>
<li>можливість sandbox-обмеження</li>
</ul>
<hr />
<h2 id="6-nats-jetstream-scaling-ha">6. NATS JetStream Scaling &amp; HA<a class="headerlink" href="#6-nats-jetstream-scaling-ha" title="Permanent link">&para;</a></h2>
<h3 id="61">6.1 Кластер<a class="headerlink" href="#61" title="Permanent link">&para;</a></h3>
<p>Рекомендована конфігурація для прод:</p>
<ul>
<li><strong>3 або 5 вузлів</strong> JetStream</li>
<li>Replication Factor = 3 для стрімів</li>
<li>Consumer durability = <code>durable=true</code></li>
<li>Ack policy = explicit</li>
</ul>
<h3 id="62-streams">6.2 Потоки (streams)<a class="headerlink" href="#62-streams" title="Permanent link">&para;</a></h3>
<p>Структура тем:</p>
<div class="codehilite"><pre><span></span><code>chat.*
project.*
task.*
agent.run.*
wallet.*
embassy.*
oracle.*
rwa.*
governance.*
audit.*
</code></pre></div>
<h3 id="63-failure-scenarios">6.3 Failure Scenarios<a class="headerlink" href="#63-failure-scenarios" title="Permanent link">&para;</a></h3>
<table>
<thead>
<tr>
<th>Failure</th>
<th>Наслідок</th>
<th>Відновлення</th>
</tr>
</thead>
<tbody>
<tr>
<td>1 вузол падає</td>
<td>Кворум зберігається</td>
<td>Автоматичний failover</td>
</tr>
<tr>
<td>2 вузли падають (із 3)</td>
<td>Стрім read-only</td>
<td>Зберегти дані, обмеження на writes</td>
</tr>
<tr>
<td>Корупція стріму</td>
<td>Канарний споживач</td>
<td>Auto-resync</td>
</tr>
</tbody>
</table>
<hr />
<h2 id="7-postgres-high-availability">7. Postgres High Availability<a class="headerlink" href="#7-postgres-high-availability" title="Permanent link">&para;</a></h2>
<h3 id="71">7.1 Архітектура<a class="headerlink" href="#71" title="Permanent link">&para;</a></h3>
<ul>
<li>Primary + at least 1–2 replicas</li>
<li>Synchronous replication (якщо SLA 99.9)</li>
<li>Архівування WAL (PITR)</li>
<li>Автоматичний failover (pg_auto_failover або cloud-managed)</li>
</ul>
<h3 id="72">7.2 Таблиці з високими вимогами до консистентності<a class="headerlink" href="#72" title="Permanent link">&para;</a></h3>
<ul>
<li><code>wallets</code></li>
<li><code>staking_ringk</code></li>
<li><code>payouts</code></li>
<li><code>rwa_inventory</code></li>
<li><code>access_keys</code></li>
<li><code>bundles</code></li>
<li><code>outbox_events</code></li>
</ul>
<p>Ці таблиці не допускають eventual consistency.</p>
<h3 id="73-query-optimization">7.3 Query Optimization<a class="headerlink" href="#73-query-optimization" title="Permanent link">&para;</a></h3>
<ul>
<li>Index coverage for all hot-path queries</li>
<li>Partitioning (опційно) для:</li>
<li><code>messages</code></li>
<li><code>audit_log</code></li>
<li><code>outbox_events</code></li>
</ul>
<hr />
<h2 id="8-outbox-pattern-scaling">8. Outbox Pattern Scaling<a class="headerlink" href="#8-outbox-pattern-scaling" title="Permanent link">&para;</a></h2>
<h3 id="81-worker-pool">8.1 Worker Pool<a class="headerlink" href="#81-worker-pool" title="Permanent link">&para;</a></h3>
<ul>
<li>2–10 воркерів</li>
<li>Кожен бере порцію подій</li>
<li>Події після обробки маркуються <code>processed=true</code></li>
</ul>
<h3 id="82-guarantees">8.2 Guarantees<a class="headerlink" href="#82-guarantees" title="Permanent link">&para;</a></h3>
<ul>
<li>At least once</li>
<li>Ordering controlled by:</li>
<li>Partition key (team_id)</li>
<li>Consumer group</li>
</ul>
<h3 id="83-failure-mode">8.3 Failure Mode<a class="headerlink" href="#83-failure-mode" title="Permanent link">&para;</a></h3>
<ul>
<li>Pod kill → worker restarts → resumes work</li>
<li>network flap → events re-delivered</li>
<li>consumer crash → DLQ (dead letter queue)</li>
</ul>
<hr />
<h2 id="9-embassy-scaling">9. Embassy Scaling<a class="headerlink" href="#9-embassy-scaling" title="Permanent link">&para;</a></h2>
<h3 id="91-incoming-webhooks">9.1 Incoming Webhooks<a class="headerlink" href="#91-incoming-webhooks" title="Permanent link">&para;</a></h3>
<ul>
<li>Stateless API</li>
<li>Unlimited horizontal scaling</li>
<li>Signature verification CPU-cheap</li>
</ul>
<h3 id="92-oracle-bursts">9.2 Oracle bursts<a class="headerlink" href="#92-oracle-bursts" title="Permanent link">&para;</a></h3>
<p>Embassy може отримати "бурст" даних з Energy Union:</p>
<ul>
<li>10k–100k meter readings</li>
<li>обробляється пакетно</li>
<li>Embassy → NATS → Wallet Service</li>
</ul>
<p>Wallet Service <strong>має бути autoscaled</strong>:</p>
<ul>
<li>CPU &gt; 70%</li>
<li>NATS consumer lag &gt; threshold</li>
</ul>
<hr />
<h2 id="10-wallet-scaling-rwa">10. Wallet Scaling &amp; RWA<a class="headerlink" href="#10-wallet-scaling-rwa" title="Permanent link">&para;</a></h2>
<h3 id="101">10.1 Ключові вимоги<a class="headerlink" href="#101" title="Permanent link">&para;</a></h3>
<p>Wallet Service обробляє:</p>
<ul>
<li>payouts,</li>
<li>claims,</li>
<li>chain transactions,</li>
<li>RWA reward distribution.</li>
</ul>
<p>Системні вимоги:</p>
<ul>
<li>row-level lock на <code>payouts</code> при claim</li>
<li>mutex на chain transaction</li>
<li>idempotent TX submission</li>
</ul>
<h3 id="102-autoscaling-logic">10.2 Autoscaling Logic<a class="headerlink" href="#102-autoscaling-logic" title="Permanent link">&para;</a></h3>
<ul>
<li>↑ CPU (chain operations heavy)</li>
<li>↑ NATS lag (payouts generated faster than processed)</li>
<li>↑ pending claim queue</li>
</ul>
<hr />
<h2 id="11-scaling-frontend">11. Scaling Frontend<a class="headerlink" href="#11-scaling-frontend" title="Permanent link">&para;</a></h2>
<h3 id="111-static-hosting">11.1 Static hosting<a class="headerlink" href="#111-static-hosting" title="Permanent link">&para;</a></h3>
<ul>
<li>CDN кешування</li>
<li>SSR вимикається для важких сторінок (агентів, wallets)</li>
</ul>
<h3 id="112-global-edge-distribution">11.2 Global edge distribution<a class="headerlink" href="#112-global-edge-distribution" title="Permanent link">&para;</a></h3>
<ul>
<li>географічні PoP</li>
<li>розподіл:</li>
<li>US-EAST</li>
<li>EU</li>
<li>South America</li>
<li>Asia</li>
</ul>
<h3 id="113-feature-flag-rollout">11.3 Feature Flag Rollout<a class="headerlink" href="#113-feature-flag-rollout" title="Permanent link">&para;</a></h3>
<ul>
<li>мінімізація ризику на проді</li>
<li>partial enablement</li>
</ul>
<hr />
<h2 id="12-failover-strategies">12. Failover Strategies<a class="headerlink" href="#12-failover-strategies" title="Permanent link">&para;</a></h2>
<h3 id="121-api-layer">12.1 API Layer<a class="headerlink" href="#121-api-layer" title="Permanent link">&para;</a></h3>
<ul>
<li>LB → автоматична заміна unhealthy nodes</li>
<li>Canary release на 5–10%</li>
</ul>
<h3 id="122-postgres">12.2 Postgres<a class="headerlink" href="#122-postgres" title="Permanent link">&para;</a></h3>
<ul>
<li>автоматичний failover на replica</li>
<li>DNS/IP switch</li>
</ul>
<h3 id="123-nats">12.3 NATS<a class="headerlink" href="#123-nats" title="Permanent link">&para;</a></h3>
<ul>
<li>внутрішня виборність leader</li>
<li>replica quorum</li>
</ul>
<h3 id="124-agents">12.4 Agents<a class="headerlink" href="#124-agents" title="Permanent link">&para;</a></h3>
<ul>
<li>job requeue → new worker takes over</li>
</ul>
<h3 id="125-embassy">12.5 Embassy<a class="headerlink" href="#125-embassy" title="Permanent link">&para;</a></h3>
<ul>
<li>stateless → fail instantly</li>
</ul>
<h3 id="126-wallet">12.6 Wallet<a class="headerlink" href="#126-wallet" title="Permanent link">&para;</a></h3>
<ul>
<li>idempotent DB writes → rescue after crash</li>
</ul>
<hr />
<h2 id="13-disaster-recovery-dr">13. Disaster Recovery (DR)<a class="headerlink" href="#13-disaster-recovery-dr" title="Permanent link">&para;</a></h2>
<h3 id="131-scenarios">13.1 Scenarios<a class="headerlink" href="#131-scenarios" title="Permanent link">&para;</a></h3>
<ol>
<li>Data center outage</li>
<li>Corrupted WAL / snapshot</li>
<li>Global cloud outage (provider-wide)</li>
<li>Stuck NATS cluster</li>
<li>Chain RPC outage</li>
<li>Embassy key leak</li>
<li>Agent DDOS / infinite loops</li>
</ol>
<h3 id="132-recovery-plan">13.2 Recovery Plan<a class="headerlink" href="#132-recovery-plan" title="Permanent link">&para;</a></h3>
<ul>
<li>Hot standby region (multi-region Postgres)</li>
<li>Backup event bus</li>
<li>Secondary RPC provider</li>
<li>Embassy secrets rotation</li>
<li>Agent Sandbox re-creation</li>
</ul>
<h3 id="133-dr-tests">13.3 DR Tests<a class="headerlink" href="#133-dr-tests" title="Permanent link">&para;</a></h3>
<ul>
<li>щоквартальні DR-ротації</li>
<li>restore Postgres snapshot</li>
<li>swap RPC endpoints</li>
<li>revoke all Embassy keys</li>
</ul>
<hr />
<h2 id="14-benchmark-targets">14. Benchmark Targets<a class="headerlink" href="#14-benchmark-targets" title="Permanent link">&para;</a></h2>
<table>
<thead>
<tr>
<th>Компонент</th>
<th>Ціль</th>
</tr>
</thead>
<tbody>
<tr>
<td>Messages</td>
<td>500 msg/sec</td>
</tr>
<tr>
<td>Agent runs</td>
<td>30–100 runs/min/worker</td>
</tr>
<tr>
<td>Embassy</td>
<td>1000 webhook/sec</td>
</tr>
<tr>
<td>Wallet payouts</td>
<td>50 payout/sec</td>
</tr>
<tr>
<td>NATS throughput</td>
<td>20k–50k events/sec</td>
</tr>
<tr>
<td>Postgres</td>
<td>p95 &lt; 100 ms</td>
</tr>
</tbody>
</table>
<hr />
<h2 id="15-cursor">15. Завдання для Cursor<a class="headerlink" href="#15-cursor" title="Permanent link">&para;</a></h2>
<div class="codehilite"><pre><span></span><code>You are a senior DevOps/SRE engineer. Implement HA infrastructure using:
- 29_scaling_and_high_availability.md
- 25_deployment_infrastructure.md
- 26_security_audit.md
Tasks:
1) Set up Postgres HA with automatic failover.
2) Configure NATS JetStream cluster (3-5 nodes).
3) Implement autoscaling for API Gateway and domain services.
4) Set up health checks and monitoring for all services.
5) Implement Outbox Worker pool with proper scaling.
6) Configure load balancer with health checks.
7) Set up disaster recovery procedures.
Output:
- list of modified files
- diff
- summary
</code></pre></div>
<hr />
<h2 id="16-summary">16. Summary<a class="headerlink" href="#16-summary" title="Permanent link">&para;</a></h2>
<ul>
<li>Архітектура підтримує HA та autoscaling на кожному шарі.</li>
<li>Сервіси ізольовані за доменами.</li>
<li>NATS та Postgres у кластерному режимі.</li>
<li>Wallet / RWA / Embassy — найбільш критичні частини.</li>
<li>Масштабування агентів окреме, з autoscaling та sandbox isolation.</li>
<li>Готова база для prod-grade розгортання.</li>
</ul>
<hr />
<p><strong>Версія:</strong> 1.0<br />
<strong>Останнє оновлення:</strong> 2024-11-14</p>
</article>
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