Build SaaS apps faster than a Tesla on Highway 36. Multi-tenancy without the migraine.
Remember when you thought "I'll just add a company_id to every table"? Don't be SchmarketerPro.
All tenants share the same tables with WHERE tenant_id clauses everywhere
One forgotten WHERE clause = lawsuit settlement larger than Series A
Every query needs tenant_id filtering, indexes become complex
Constant fear of mixing tenant data, complex code reviews
Each tenant gets their own PostgreSQL schema - impossible to mix data
Database enforces isolation - no application logic needed
No WHERE tenant_id on every query, cleaner indexes
Write normal queries, isolation handled automatically
PostgreSQL schema isolation that scales from 1 to 10,000 tenants
Each tenant gets their own schema with true database-level isolation.
Create tenants and switch context with minimal code changes.
Database-level isolation with automatic context switching.
Same performance from 1 to 10,000 tenants with horizontal scaling.
Custom domains, white-label support, and tenant analytics.
Clean code without tenant_id pollution everywhere.
Three simple steps to bulletproof multi-tenancy
Create your tables normally - no tenant_id needed!
-- Your tables, same as single-tenant
CREATE TABLE users (
id SERIAL PRIMARY KEY,
email VARCHAR(255),
name VARCHAR(255)
);
-- No tenant_id needed!New customer? Schema created automatically in < 100ms.
// New customer signs up
const company = await api.createCompany({{
name: "Flatiron Fitness",
domain: "flatironfitness.com"
}});
// Schema created, migrated, ready!Your code doesn't change - tenant context is automatic.
// Your code doesn't change
const users = await User.findAll();
// Returns only current tenant's users
// No tenant logic needed!See how simple multi-tenant development becomes
// Create a new tenant company
const company = await createCompany({{
name: "Flatiron Fitness",
domain: "flatironfitness.com",
plan: "premium"
}});
// Schema created, isolated, ready in < 100ms
// Switch to tenant context
await setTenantContext(company.id);
// All queries now scoped to this tenant
// Seed initial data
await seedTenantData(company.id, {{
adminUser: {{
email: "admin@flatironfitness.com",
name: "Boulder Admin"
}}
}});# In your Rails app
class ApplicationController
before_action :set_tenant
def set_tenant
# One line. That's it.
current_company = Company.find(params[:company_id])
Apartment::Tenant.switch!(current_company.schema_name)
end
end
# Every query is now tenant-safe
User.all # Only returns current tenant's users
Post.create(title: "News") # Saved to current tenant// Backup single tenant
await backupTenant('flatiron-fitness');
// Clone tenant (for staging/testing)
await cloneTenant('production', 'staging');
// Export tenant data (GDPR compliance)
const exportData = await exportTenantData('company-123');
// Migrate tenant to new schema version
await migrateTenant('company-123', 'v2.1.0');
// Get tenant usage statistics
const stats = await getTenantStats('company-123');
// {{ queries: 1547, storage: "2.3GB", users: 156 }}// Get analytics across all tenants
const analytics = await getMultiTenantAnalytics();
console.log(analytics);
// {{
// totalTenants: 1247,
// activeToday: 892,
// totalUsers: 156847,
// queriesPerSecond: 1547,
// topTenants: [
// {{ name: "Flatiron Fitness", users: 2847, queries: 50000 }},
// {{ name: "Boulder Bikes", users: 1923, queries: 35000 }}
// ]
// }}
// Monitor tenant resource usage
const usage = await getTenantResourceUsage('company-123');
// {{ cpu: 45, memory: 67, storage: "2.3GB", queries: 1547 }}Real companies running thousands of tenants with bulletproof isolation
Enterprise CRM Platform
"We evaluated Kubernetes namespace isolation, separate databases, and row-level security. Schema isolation with 23blocks was the only solution that was both secure AND performant."
Human Resources Platform
"Migrating from single-tenant to multi-tenant was our biggest technical challenge. 23blocks made it seamless - 2 days to 2 minutes onboarding time."
We've heard every objection and solved every problem
✅ Public schema for shared tables. Best of both worlds.
// Shared data in public schema
const countries = await Country.findAll();
// Available to all tenants
// Tenant-specific data
const users = await User.findAll();
// Only current tenant's users✅ Automatically applied to all tenants with rollback support.
// Run migration across all tenants
await migrateTenants('add_user_preferences');
// Applied to all 1,200 tenants safely
// Rollback if needed
await rollbackTenants('add_user_preferences');✅ Yes, when needed. With proper access controls.
// Cross-tenant analytics (admin only)
const stats = await queryAcrossTenants(
'SELECT COUNT(*) FROM users',
{{ role: 'admin' }}
);
// Returns aggregated data safely✅ Better than row-level. No tenant_id indexes needed.
// No tenant_id filtering needed
SELECT * FROM users WHERE active = true;
-- Much faster than:
-- SELECT * FROM users WHERE tenant_id = 123 AND active = true;Stop worrying about data leaks. Start building SaaS that scales.
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