https://vishwatejavangari.com/writing/ Notes on agent platforms, ontologies and semantic layers, the agentic SDLC, data platforms and the order lifecycle. en-us Sun, 04 Oct 2026 00:00:00 +0000 https://vishwatejavangari.com/writing/how-much-semantic-modeling-do-your-ai-agents-need.html https://vishwatejavangari.com/writing/how-much-semantic-modeling-do-your-ai-agents-need.html Sun, 04 Oct 2026 00:00:00 +0000 A meeting room booking example shows when SQL is enough, when a property graph helps, and what would justify RDF or OWL. ontology property-graph rdf owl agents https://vishwatejavangari.com/writing/why-ai-audit-agents-need-more-than-search-results.html https://vishwatejavangari.com/writing/why-ai-audit-agents-need-more-than-search-results.html Thu, 01 Oct 2026 00:00:00 +0000 In a synthetic test, an AI agent returned 3 correct patients and quietly missed 9. Here is why that happened, and how to check whether a list of your own is complete. ontology rag healthcare terminology agents https://vishwatejavangari.com/writing/the-layer-of-meaning-the-concepts.html https://vishwatejavangari.com/writing/the-layer-of-meaning-the-concepts.html Wed, 30 Sep 2026 00:00:00 +0000 A grocery substitution explains ontology, knowledge graphs, semantic and context layers, and how business and technology teams keep their definitions trustworthy. ontology knowledge-graph semantic-layer context-layer agents https://medium.com/egen/how-to-configure-oauth2-authentication-for-apache-kafka-cluster-using-okta-8c60d4a85b43 https://medium.com/egen/how-to-configure-oauth2-authentication-for-apache-kafka-cluster-using-okta-8c60d4a85b43 Tue, 10 Sep 2019 00:00:00 +0000 The OAUTHBEARER SASL mechanism with custom callback handlers that validate tokens against Okta, wired to ACLs, tested end to end. Companion repo: kafka-oauth2. kafka security okta https://medium.com/egen/ksql-a-streaming-sql-engine-on-apache-kafka-90350aea2183 https://medium.com/egen/ksql-a-streaming-sql-engine-on-apache-kafka-90350aea2183 Mon, 15 Jul 2019 00:00:00 +0000 Streams versus tables, keys and timestamps, filters, joins and aggregations, without writing a Kafka Streams topology. Docker based. kafka streaming ksql https://medium.com/egen/configuring-linkedin-kafka-burrow-for-sasl-kafka-cluster-dc54e4b1407e https://medium.com/egen/configuring-linkedin-kafka-burrow-for-sasl-kafka-cluster-dc54e4b1407e Sat, 29 Jun 2019 00:00:00 +0000 Consumer-lag monitoring with LinkedIn's Burrow, including the fork that added SCRAM-SHA-256 and SHA-512 support, a compose setup and a dashboard. kafka monitoring https://medium.com/egen/securing-kafka-cluster-using-sasl-acl-and-ssl-dec15b439f9d https://medium.com/egen/securing-kafka-cluster-using-sasl-acl-and-ssl-dec15b439f9d Sun, 23 Jun 2019 00:00:00 +0000 SCRAM-SHA-512 authentication, ACL authorization and SSL encryption, with the errors you hit along the way and how each one is fixed. Companion repo: SecureKafka. kafka security