Topic

Retrieval

2 articles

Attribute-based access control (ABAC): a practical guide

NIST defines attribute-based access control as decisions made from attributes of the subject, the object and the environment. The architecture behind it, how it differs from RBAC and Google's Zanzibar-style ReBAC, the policy languages that implement it, and how to apply it to models, agent tools, MCP servers and RAG.

Published Oct 21, 202623 min read

Comparisons

RAG vs. long context: choose by failure mode, not by benchmark

Every frontier API now takes a million tokens, and every published long-context study still finds accuracy falling well before the window is full. Retrieval fails differently, earlier and more visibly. The failure you can tolerate should decide, and current pricing tells you what each choice costs.

Published Sep 4, 202610 min read