Ask HN: How come there is no example code for B2B-SaaS apps?
In my experience, a lot of projects start off with shared tenancy (using a tenant id discriminator in the database) and eventually migrate to completely separate schema for each tenant (i.e. a separate “installation” of a single-tenancy app for each tenant) to avoid security and architectural pitfalls.<p>Once you’ve done that, you don’t have to worry about forgetting a `WHERE tenantId = foo` somewhere and leaking data. The actual code is shared (i.e. not installed separately or in separate processes) and you would simply use your dependency injection or equivalent to resolve the DB connection contingent on $user’s validated claims.<p>“Networking” or sharing entities across tenants becomes harder this way.. but purer/cleaner. You essentially create a federation layer and communicate across instances via a hard code wall (via network requests to yourself and an API) rather than “in memory” which <i>is</i> less efficient and requires a lot of boiler plate, but it’s going to be what you’re going to end up doing anyway.