# Scaling agent systems with Apache Kafka and A2A (Part 6): The Quartz Chronometer Agent – An Example using the default A2A protocols Instaclustr Blog ================== Featured blogs ---------------- ### Scaling agent systems with Apache Kafka and A2A (Part 6): The Quartz Chronometer Agent - An Example using the default A2A protocols Explore an A2A demo using the Agent2Agent protocol, the official A2A Java reference server, JSON-RPC, and SSE for streaming task updates. [Read more](https://www.instaclustr.com/blog/scaling-agent-systems-with-apache-kafka-and-a2a-part-6-the-quartz-chronometer-agent-an-example-using-the-default-a2a-protocols/) ![](https://www.instaclustr.com/wp-content/themes/instaclustr/img/2024/icon-calendar-ntap-teal.svg)October 8, 2026 ![]()By Paul Brebner ### MCP Gateway RBAC tutorial: Add Role-Based Access Control to your AI agent with Auth0 and Apache Cassandra Learn how to add Auth0 authentication and role-based access control (RBAC) to an AI agent with MCP Gateway, Access Control Lists, and an Apache Cassandra backend. This step-by-step tutorial shows how to configure OAuth, map roles, control tool access, and enforce least-privilege access without changing chatbot code. [Read more](https://www.instaclustr.com/blog/mcp-gateway-rbac-role-based-access-control-auth0-apache-cassandra/) ![](https://www.instaclustr.com/wp-content/themes/instaclustr/img/2024/icon-calendar-ntap-teal.svg)September 28, 2026 ![]()By Ramya Ravi ### Keep your engineers working on the roadmap, not the database DBGorilla connects to your Instaclustr-managed PostgreSQL database in minutes. It combines data from Instaclustr’s monitoring APIs with signals from the database itself, giving it the operational context to improve every query and identify risks before they become problems. [Read more](https://www.instaclustr.com/blog/keep-your-engineers-working-on-the-roadmap-not-the-database/) ![](https://www.instaclustr.com/wp-content/themes/instaclustr/img/2024/icon-calendar-ntap-teal.svg)September 25, 2026 ![]()By Sayan Saha ### Vector Search in Apache Cassandra for RAG Retrieval Learn how Apache Cassandra vector search supports RAG retrieval with native embeddings, ANN queries, and no separate vector database. [Read more](https://www.instaclustr.com/blog/vector-search-apache-cassandra-rag-retrieval/) ![](https://www.instaclustr.com/wp-content/themes/instaclustr/img/2024/icon-calendar-ntap-teal.svg)September 23, 2026 ![]()By Mariah McLaughlin [See all featured blogs](/blog/category/featured-blogs/) [ Scaling agent systems with Apache Kafka and A2A (Part 6): The Quartz Chronometer Agent - An Example using the default A2A protocols October 8, 2026 | By Paul Brebner Explore an A2A demo using the Agent2Agent protocol, the official A2A Java reference server, JSON-RPC, and SSE for streaming task updates. October 8, 2026 | By Paul Brebner ](https://www.instaclustr.com/blog/scaling-agent-systems-with-apache-kafka-and-a2a-part-6-the-quartz-chronometer-agent-an-example-using-the-default-a2a-protocols/) [ MCP Gateway RBAC tutorial: Add Role-Based Access Control to your AI agent with Auth0 and Apache Cassandra September 28, 2026 | By Ramya Ravi Learn how to add Auth0 authentication and role-based access control (RBAC) to an AI agent with MCP Gateway, Access Control Lists, and an Apache Cassandra backend. This step-by-step tutorial shows how to configure OAuth, map roles, control tool access, and enforce least-privilege access without changing chatbot code. September 28, 2026 | By Ramya Ravi ](https://www.instaclustr.com/blog/mcp-gateway-rbac-role-based-access-control-auth0-apache-cassandra/) [ Keep your engineers working on the roadmap, not the database September 25, 2026 | By Sayan Saha DBGorilla connects to your Instaclustr-managed PostgreSQL database in minutes. It combines data from Instaclustr’s monitoring APIs with signals from the database itself, giving it the operational context to improve every query and identify risks before they become problems. September 25, 2026 | By Sayan Saha ](https://www.instaclustr.com/blog/keep-your-engineers-working-on-the-roadmap-not-the-database/) [ Vector Search in Apache Cassandra for RAG Retrieval September 23, 2026 | By Mariah McLaughlin Learn how Apache Cassandra vector search supports RAG retrieval with native embeddings, ANN queries, and no separate vector database. September 23, 2026 | By Mariah McLaughlin ](https://www.instaclustr.com/blog/vector-search-apache-cassandra-rag-retrieval/) [ Build OpenSearch Vector Indexes faster with NetApp Instaclustr and NVIDIA cuVS September 21, 2026 | By Alex Bunday NetApp Instaclustr brings GPU-accelerated vector indexing to managed OpenSearch with NVIDIA cuVS, helping teams build large-scale vector indexes faster for RAG, semantic search, and AI search workloads. September 21, 2026 | By Alex Bunday ](https://www.instaclustr.com/blog/build-opensearch-vector-indexes-faster-with-netapp-instaclustr-and-nvidia-cuvs/) [ OpenSearch vector search and RAG pipelines: Free hands-on courses for builders September 21, 2026 | By Brian Graf Take free OpenSearch courses on vector search and RAG pipelines with hands-on labs in a live OpenSearch cluster. Build practical AI search skills with no credit card required. September 21, 2026 | By Brian Graf ](https://www.instaclustr.com/blog/free-opensearch-training-course/) [ Scaling agent systems with Apache Kafka and A2A (Part 5): The Clockwork Agent - A Java A2A example September 9, 2026 | By Paul Brebner Learn how the Agent2Agent (A2A) protocol works through a practical Java A2A example. Explore Agent Cards, SendMessage, task lifecycles, polling, multi-turn interactions, and how Apache Kafka helps scale agent systems September 9, 2026 | By Paul Brebner ](https://www.instaclustr.com/blog/scaling-agent-systems-with-apache-kafka-and-a2a-part-5-the-clockwork-agent-a-java-a2a-example/) [ Build fast, storage efficient PostgreSQL clusters with Instaclustr PostgreSQL® on Amazon FSx for NetApp ONTAP September 8, 2026 | By Naina Ananthaswamy Run managed PostgreSQL on AWS with Instaclustr PostgreSQL on Amazon FSx for NetApp ONTAP. Use fast PostgreSQL snapshots, restores, and writable clones to support backups, testing, and analytics without production risk. September 8, 2026 | By Naina Ananthaswamy ](https://www.instaclustr.com/blog/instaclustr-postgresql-amazon-fsx-netapp-ontap/) [ How to use ClickHouse system.query_log for query observability and performance monitoring September 8, 2026 | By Vikas Kumar Learn how ClickHouse system.query_log helps monitor query performance, identify slow queries, troubleshoot failures, analyze resource usage, and improve observability. September 8, 2026 | By Vikas Kumar ](https://www.instaclustr.com/blog/how-to-use-clickhouse-system-query_log-for-query-observability-and-performance-monitoring/) [ Reduce public attack surface across managed clusters with Zero Inbound Access August 27, 2026 | By Mitch O'Dea Learn how Zero Inbound Access for the NetApp Instaclustr Managed Platform reduces public attack surface by removing publicly routable IPs from managed clusters across AWS, Azure, GCP, and on-premises deployments. August 27, 2026 | By Mitch O'Dea ](https://www.instaclustr.com/blog/reduce-public-attack-surface-across-managed-clusters-with-zero-inbound-access/) ### Speak to an expert Today [Contact us](/contact-us/) Learn about our Managed platform ---------------------------------- [ Check it out ](/platform/)