Writing about the systems.

Notes on multi-tenant isolation, real-time agent latency, and raster processing pipelines, written from systems I actually shipped.

• 11 Aug 2026PostgreSQL · Multi-tenancy · Architecture

  Tenant isolation belongs in Postgres, not your application code

  Application-layer tenant filtering is one forgotten WHERE clause away from a data leak. Row Level Security moves the guarantee into the database, where it cannot be skipped.

• 11 Aug 2026LangGraph · Real-time · Latency

  Hiding extraction latency behind parallel agent nodes

  A phone call gives you no room to think. Running the conversational reply and the structured extraction in sequence blows the latency budget; running them concurrently makes data capture free.

• 11 Aug 2026Geospatial · Rasterio · Pipelines

  Raster pipelines do not belong in the request cycle

  Multi-spectral satellite scenes are far too large to process inside an HTTP request. Splitting retrieval and raster maths into background workers is what makes the product surface feel instant.