Primary PostgreSQL 16 database for the environment. It stores schemas for Authentik, Wiki.js, Paperless, Mealie, n8n, Portnote, and other applications that declare credentials in their respective stacks.【F:databases/compose.yml†L28-L49】
postgres:16-alpinedb_netpg_data:/var/lib/postgresql/dataPOSTGRES_USER, POSTGRES_PASSWORD, POSTGRES_DB, and timezonepg_isready executed every 10 seconds with up to 10 retriesAUTHENTIK_POSTGRESQL__*), Paperless (PAPERLESS_DB*), Mealie (POSTGRES_*), n8n (DB_POSTGRESDB_*), Wiki.js (DB_*), Portnote (DATABASE_URL), BookBounty, AudiobookRequest, and other services documented in their container pages.【F:authentik/compose.yml†L24-L60】【F:tools/compose.yml†L26-L236】【F:yarr/compose.yml†L260-L340】pg_isready passes before starting migrations.command line to expand connection limits when more concurrent workloads are added.【F:databases/compose.yml†L40-L45】pg_data volume on SSD cache for optimal performance; snapshots should be taken via Autorestic.