Operations

The operator-facing surface: observability, cache control, SQL composition, multi-PG support, install.

These aren't a fifth pillar — they're the seams that let the four pillars compose cleanly inside Postgres.

In this section

• pgrdf.stats() observability — JSONB health snapshot.
• Cache control — explicit invalidation for the dictionary cache.
• Prepared-plan cache — SPARQL→SQL plan reuse per backend.
• Compose with regular SQL — pgrdf.sparql as a set-returning function.
• Multi-version Postgres support.
• Drop-in install.