Articles on big data, machine learning, generative AI and MLOps from the BigAI engineering team.https://bigai.vn/enhttps://bigai.vn/en/blog/what-is-a-data-lakehouse/https://bigai.vn/en/blog/what-is-a-data-lakehouse/Data warehouse, data lake and lakehouse compared across six practical criteria, with a framework for choosing the right architecture at your scale.Wed, 12 Aug 2026 00:00:00 GMTData architecturehttps://bigai.vn/en/blog/how-rag-works/https://bigai.vn/en/blog/how-rag-works/Cost, accuracy and control compared between RAG and fine-tuning, with a practical decision framework for enterprises deploying internal AI assistants.Wed, 05 Aug 2026 00:00:00 GMTGenerative AIhttps://bigai.vn/en/blog/spark-cost-optimisation/https://bigai.vn/en/blog/spark-cost-optimisation/Seven Spark optimisations applied on a real project, with before and after numbers — from storage format to partition sizing and executor memory.Tue, 28 Jul 2026 00:00:00 GMTMLOpshttps://bigai.vn/en/blog/cdc-with-debezium/https://bigai.vn/en/blog/cdc-with-debezium/A practical Debezium setup for core banking and ERP systems, the mistakes that bite in production, and how to handle source schema changes mid-flight.Tue, 14 Jul 2026 00:00:00 GMTData architecturehttps://bigai.vn/en/blog/evaluating-enterprise-chatbots/https://bigai.vn/en/blog/evaluating-enterprise-chatbots/The acceptance criteria BigAI uses for RAG systems: citation accuracy, correct refusal rate, document coverage and real user satisfaction.Tue, 07 Jul 2026 00:00:00 GMTGenerative AIhttps://bigai.vn/en/blog/model-drift/https://bigai.vn/en/blog/model-drift/Which signals to monitor for production models, how to set alert thresholds that people will not ignore, and how to tell data drift from concept drift.Tue, 30 Jun 2026 00:00:00 GMTMLOps