Twenty guides in four topics, newest first. Each topic page suggests a reading order: multi-tenant architecture, billing and entitlements, security and identity, and operations. Guides with a runnable program are also listed on the labs page.
A tenant policy that fails closed, setting the tenant safely through a pool, and the roles that bypass RLS, tested on PostgreSQL 18.6, including a leak through a reused connection.
How to map Host headers to tenants without key mismatches, certificate surprises, or a cold-cache stampede, with a lab that tests a common normalizer and singleflight.
