Laravel Advanced & Architecture
10+ Years (Principal / Architect)
Expert
Production Scenario
How do you architect Multi-Tenant database isolation in Laravel (Single DB vs Multi DB vs Schema Separation)?
Real-World Scenario / Incident Description
An enterprise B2B SaaS platform is scaling from 100 to 10,000 tenants. Enterprise clients require strict GDPR data segregation, isolated database backups, and custom billing databases.
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Updated 1 month ago
Comparison of Multi-Tenancy Models
| Strategy | Pros | Cons | Ideal For |
|---|---|---|---|
| Single DB (Column Tenant ID) | Low cost, simple migrations, aggregate reporting easy | High risk of data leaks if scope missed, table bloat | B2C or low-tier SaaS |
| Multi-DB (Isolated Databases) | Complete data security, per-tenant backups, GDPR compliant | Migration latency across 10k DBs, connection overhead | Enterprise B2B SaaS |
| PostgreSQL Schemas | Single DB connection pool, isolated table namespaces | Migration complexity | Hybrid enterprise |
Multi-DB Switching Implementation in Laravel
class SwitchTenantConnection
{
public function handle(Request $request, Closure $next): Response
{
$tenant = Tenant::where('domain', $request->getHost())->firstOrFail();
// Dynamically purge and reconnect
Config::set('database.connections.tenant.database', $tenant->database_name);
DB::purge('tenant');
DB::reconnect('tenant');
DB::setDefaultConnection('tenant');
return $next($request);
}
}
Related Concepts:
#Multi-Tenancy
#Database Architecture
#Security
#GDPR
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