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CephalonEngine

Multi-tenancy

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CephalonEngine treats multi-tenancy as a first-class capability — not a sidecar. The Cephalon.MultiTenancy family covers everything from resolution to durable governance.

Packages

Section titled “Packages”
PackageMaturityWhat it brings
Cephalon.MultiTenancyM2Tenancy primitives — ITenantContext, ITenantResolver, resolution policy, ambient context middleware.
Cephalon.MultiTenancy.GovernanceM2Durable tenant-membership, tenant-invitation, declared domain ownership, approval/remediation action decision, in-process workflow, opt-in durable membership/invitation/domain/action-store.

Email-delivery adapters

Section titled “Email-delivery adapters”

The governance flow can deliver invitations and remediation messages through pluggable providers:

PackageMaturity
Cephalon.MultiTenancy.Governance.SmtpDeliveryM2
Cephalon.MultiTenancy.Governance.SendGridDeliveryM2
Cephalon.MultiTenancy.Governance.SendGridDelivery.AspNetCoreM2
Cephalon.MultiTenancy.Governance.AmazonSesDeliveryM2
Cephalon.MultiTenancy.Governance.AmazonSesDelivery.AspNetCoreM2
Cephalon.MultiTenancy.Governance.MailgunDeliveryM2
Cephalon.MultiTenancy.Governance.MailgunDelivery.AspNetCoreM2
Cephalon.MultiTenancy.Governance.MicrosoftGraphDeliveryM2
Cephalon.MultiTenancy.Governance.MicrosoftGraphDelivery.AzureIdentityM2
Cephalon.MultiTenancy.Governance.HttpDeliveryM2

How to enable

Section titled “How to enable”
builder.Services
    .AddCephalonAspNetCore()
    .AddMultiTenancy(options =>
    {
        options.Resolvers.UseSubdomain();
        options.Resolvers.UseHeader("X-Tenant");
        options.Resolvers.UseClaim("tenant_id");
    })
    .AddTenantGovernance(options =>
    {
        options.UseEntityFramework<TenantGovernanceDbContext>();
        options.EmailDelivery.UseSendGrid();
    })
    .AddModulesFromAssemblies(/* ... */);

Per-tenant data isolation

Section titled “Per-tenant data isolation”

A common pattern is to inject the tenant context into the DbContextOptions so EF Core can apply row-level filters automatically:

services.AddCephalonEntityFramework<AppDbContext>((sp, options) =>
{
    var tenant = sp.GetRequiredService<ITenantContext>();
    options.UseNpgsql(conn);
    options.AddInterceptor(new TenantRlsInterceptor(tenant));
});

Source-doc snapshots

Section titled “Source-doc snapshots”

Cross-references

Section titled “Cross-references”