Data Engineering2 articles

Data Engineering

Articles

PII Redaction and Reversible Tokenization in Production LLM Systems: Architecture, NER Latency, and Streaming De-Anonymization
In enterprise production environments, forwarding unsanitized prompt payloads to third-party model providers or logging raw agent execution traces exposes organizations to severe regulatory liability. Under frameworks such as GDPR Article 4(1), the HIPAA Safe Harbor standard, and the California Privacy Rights Act (CPRA), personally identifiable information (PII) including patient health identifiers, Social Security numbers, credit card data, full names, and personal email addresses cannot be tra
August 21, 20261 min
Data Ingestion and Incremental Sync for Production RAG: CDC Streams, Content Hashing, Backpressure, and Zero-Downtime Indexing
Maintaining retrieval-augmented generation (RAG) systems in production introduces a fundamental distributed systems challenge that rarely surfaces in proof-of-concept architectures: state synchronization. While initial ingestion across a static document corpus is straightforward, production data sources (PostgreSQL databases, transactional stores, object storage, and enterprise knowledge hubs) undergo continuous mutation. Records are inserted, updated, soft-deleted, and reassigned new access per
August 20, 20261 min