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Tenant provisioning lifecycle

The tenant isolation page explains what a tenant is — a catalog row in organizations plus one PostgreSQL schema named tenant_<tenant_id>, resolved per request. This page explains how that tenant comes into being: the sequence that turns an organization row into a schema-ready tenant, the two-phase split that determines when you stop seeing 503, and the recovery queue a stuck tenant enters. The individual failure codes the lifecycle emits (MISSING_TENANT, TENANT_NOT_FOUND, TENANT_PROVISIONING, and TENANT_SCHEMA_INCOMPLETE) are enumerated on the troubleshooting ladder; this is the concept page that ladder references.

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The provisioning sequence

Provisioning is not one step — it is a fixed sequence, and the order is the whole story. A signup ( Clerk webhook ) or a sub-account create runs it:
Step 2 exists before step 3 succeeds so the org row is the anchor every concurrent attempt resolves against — a concurrent request that finds the row sees a plain TENANT_PROVISIONING 503 rather than double-creating. Steps 3→5 are the fast core path: the schema is created synchronously and the ready flag flips within seconds, so account-scoped APIs stop returning 503 within seconds of signup. Step 6 (the ~1,200-body TENANT_MIGRATIONS catch-up) is deliberately off the request path because it gates nothing, and step 7 (the billing customer) is likewise deferred — otherwise a slow provider call holds signup open and a dropped webhook strands the user. Both are reconciled by background sweeps, never by retrying the request. Every statement in the schema bootstrap is CREATE ... IF NOT EXISTS, inside one transaction with a transaction-scoped advisory lock — so a concurrent second provisioning attempt for the same tenant blocks until the winner commits, then sees the fully-built schema. A whole retry of the bootstrap is therefore safe: nothing from a failed attempt survives to conflict.
The titles above name what really matters: the flag tenant_schema_ready is the one readiness signal every gate, scheduler fan-out, and repair sweep keys off. A code like TENANT_PROVISIONING (503) is emitted exactly when that flag is FALSE — the lifecycle states on the troubleshooting ladder all derive from the same one flag.

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Where each lifecycle state comes from

Provisioning emits four bad responses on the ladder, and all four come from distinct points in the sequence above:
  • MISSING_TENANT (400) — nothing in the request resolved to an org (no API key / tenant header); the sequence never even started.
  • TENANT_NOT_FOUND (404) — the org row failed to land in step 2 (or the request resolves to a deleted/non-existent organization).
  • TENANT_PROVISIONING (503) — the org row exists but steps 3–4 have not completed (flag FALSE), or have been reset FALSE by the repair loop below.
  • TENANT_SCHEMA_INCOMPLETE (503) — the tenant is ready, but a later platform release added a table this tenant’s ledger has not yet applied; the literal 42P01 undefined_table SQLSTATE is what a schema-guarded route maps to this code.
Steady state — the resolved tenant — is step 4 complete and every per- tenant migration applied by the periodic catch-up sweep.

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When it goes wrong — the recovery queue

A stuck tenant is not repaired by the user refreshing the page. It enters one of three idempotent recovery paths, all of which re-run the same ensureTenantSchema bootstrap rather than a special repair:
  • Per-request self-heal. The first request that finds tenant_schema_ready = FALSE re-runs the bootstrap in-band, then the request resolves as if the sequence had completed. This covers the “flag stuck FALSE” case.
  • The 15-minute schema-repair sweep. A scheduler re-runs the bootstrap for an org whose flag is TRUE but whose schema is missing — the reverse gap no request will ever trigger. This covers the “schema was dropped or never fully landed” case.
  • The deferred catch-up + periodic migration sweep. The background runSingleTenantMigrations pass (step 6) reconciles any column an older body added; the scheduled fleet-wide runTenantMigrations sweep re-applies flagged per-tenant migrations so a long-lived tenant and a same-day signup converge.
The flag is the pivot for all three: a self-heal fires exactly when it is FALSE, a sweep re-applies exactly what the per-tenant _migrations ledger says is missing, and one flag read is enough for the platform to route the repair.

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Relationship to isolation

Provisioning answers how the tenant boundary comes into being; tenant isolation then answers what that boundary is — the shared public catalog vs the per-tenant schema — and how the API resolves it per request — from your API key, never from a client-supplied tenant_id. Read pages in that order; the lifecycle states above are diagnosed on the troubleshooting ladder and the schema-drift-specific rung has its own runbook at TENANT_SCHEMA_INCOMPLETE (503).

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Cross-references