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<h1 class="text-4xl font-bold mb-4">Multi-Tenancy</h1>
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High-performance multi-tenant support with zero-allocation context and RLS integration.
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<h2 class="text-2xl font-semibold mb-4">Isolation Strategies</h2>
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<h3 class="font-semibold mb-1">Row-Level Security (RLS)</h3>
<p class="text-sm text-muted">Database-enforced filtering. Best performance, shared schema.</p>
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<h3 class="font-semibold mb-1">Schema-Based</h3>
<p class="text-sm text-muted">Separate schema per tenant. Good isolation, more complex migrations.</p>
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<h3 class="font-semibold mb-1">Database-Based</h3>
<p class="text-sm text-muted">Separate database per tenant. Maximum isolation, highest overhead.</p>
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<h2 class="text-2xl font-semibold mb-4">Zero-Allocation Tenant Context</h2>
<p class="text-muted mb-4">Use task-local storage for zero-heap-allocation tenant propagation in async code.</p>
<app-code-block [code]="taskLocalCode" language="rust" />
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<h2 class="text-2xl font-semibold mb-4">PostgreSQL Row-Level Security</h2>
<p class="text-muted mb-4">Best performance option. Database handles all filtering automatically.</p>
<app-code-block [code]="rlsCode" language="rust" />
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<h2 class="text-2xl font-semibold mb-4">Sharded Tenant Cache</h2>
<p class="text-muted mb-4">High-concurrency LRU cache with reduced lock contention.</p>
<app-code-block [code]="cacheCode" language="rust" />
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<h2 class="text-2xl font-semibold mb-4">Per-Tenant Connection Pools</h2>
<p class="text-muted mb-4">Isolated connection resources per tenant.</p>
<app-code-block [code]="poolCode" language="rust" />
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<h2 class="text-2xl font-semibold mb-4">Statement Caching</h2>
<p class="text-muted mb-4">Reuse prepared statements across requests for better performance.</p>
<app-code-block [code]="preparedCode" language="rust" />
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<h2 class="text-2xl font-semibold mb-4">Performance Comparison</h2>
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<th class="text-left py-3 px-4">Strategy</th>
<th class="text-left py-3 px-4">Isolation</th>
<th class="text-left py-3 px-4">Performance</th>
<th class="text-left py-3 px-4">Complexity</th>
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<td class="py-3 px-4">RLS</td>
<td class="py-3 px-4">Good</td>
<td class="py-3 px-4 text-green-400">Excellent</td>
<td class="py-3 px-4 text-green-400">Low</td>
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<td class="py-3 px-4">Schema-Based</td>
<td class="py-3 px-4">Better</td>
<td class="py-3 px-4 text-yellow-400">Good</td>
<td class="py-3 px-4 text-yellow-400">Medium</td>
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<td class="py-3 px-4">Database-Based</td>
<td class="py-3 px-4 text-green-400">Maximum</td>
<td class="py-3 px-4 text-yellow-400">Good</td>
<td class="py-3 px-4 text-red-400">High</td>
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<h2 class="text-2xl font-semibold mb-4">Best Practices</h2>
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<h3 class="font-semibold text-green-400 mb-1">✅ Do</h3>
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<li>Derive tenant ID from auth tokens server-side</li>
<li>Use RLS for PostgreSQL when possible</li>
<li>Cache tenant lookups with TTL</li>
<li>Test tenant isolation thoroughly</li>
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<h3 class="font-semibold text-red-400 mb-1">❌ Don't</h3>
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<li>Trust client-provided tenant IDs</li>
<li>Skip RLS policy verification</li>
<li>Share connections across tenants without RLS</li>
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