Breaktime Tech Talks

Ep43: MCP Java SDK + Naive RAG vs GraphRAG

In this episode, we dive into the latest upgrades in Neo4j tooling, along with recent bug fixes and enhancements in the LLM Knowledge Graph Builder. We also explore a new preview feature for Java object mapping in the Neo4j Java driver and check out the MCP Java SDK. Next, we highlight the new "Using Neo4j with Java" course on GraphAcademy and unpack a compelling Weaviate article on RAG vs. GraphRAG, featuring Microsoft’s GraphRAG methodology.Whether you're a Java dev, graph enthusiast, or AI-curious, there's something in here for you!

Ep42: RAG and Java + AI-generated content and MCP

Star Wars Day is nearly here, and this episode is stacked with tech goodness to celebrate! I’m diving into highlights from the Neo4j ecosystem, starting with an early look at the Using Neo4j with Java course—perfect for getting started with the Java driver in a framework-less setup.
Also in this episode:
⚙️ Behind-the-scenes of APOC + Pinecone integration
✨ Part 2 of my Intro to Retrieval Augmented Generation series
🎥 My recent guest spot on Neo4j Live, discussing the Developer’s Guide to Building a Knowledge Graph
🤖 A fascinating series on an AI content experiment from Mark Heckler
📚 Michael Hunger’s must-read blog on the Model Context Protocol (MCP)
May the Fourth be with you!

Ep41: Spring AI M7, NODES, RAG + Neo4j, Quarkus, and Intelligent Apps

In this episode, we unpack a busy week of updates, learning, and cool tech! From Spring AI’s milestone 7 release with simplified Pinecone configuration to some tricky wifi, I walk through recent changes and adventures. Plus, NODES 2025 is officially announced, and there’s hints of our upcoming GraphAcademy Java course. I also talk about the first part of my new blog series on Retrieval Augmented Generation and highlight a fantastic article on Neo4j, Quarkus, and intelligent applications.

Ep40: Recent AI learnings + More than a vector database

Fresh from the Arc of AI conference, I’m unpacking the biggest insights that stuck with me—ranging from the extremes of AI’s capabilities to the deeper implications for how we build and maintain our tech systems. I’ll also share a new blog post and code repo I published on loading data into Pinecone, some next-gen tools I’m eyeing, and thoughts on a great article from the Redis blog about why vector databases aren’t enough. Navigate the evolving landscape of LLMs, generative AI, and modern infrastructure with me in this episode.

Ep39: Why embedding models should match + Advice for starting a blog

In this podcast episode, hear about my hands-on experience (code repository on Github) understanding the importance of using the same embedding models for both creating and searching vector embeddings in databases and how mismatched models can lead to poor search results.
I also pull highlights from an article with advice for those interested in blogging, and how it particularly relates to my own approach to tech blogging.

Ep38: Spring AI Debugging + How to Contribute to Open Source

In this episode, I continue my journey with vector databases, integrating Pinecone, Neo4j, and Spring AI. While making some progress, I also encountered hurdles, such as evolving APIs and the unique architecture of vector stores.
Next, I share insights from an article on contributing to open-source projects, how it can accelerate your career and enhance both your technical and soft skills. From picking the right project to building credibility within the community, it's a series of steps that gets better with time and practice!

Ep37: Vector Database Frustration + Microsoft LazyGraphRAG

In this episode, I discuss my challenges exploring vector databases for an upcoming demo. From what is a vector database to integration issues, hear how I tried a few different approaches with limited success and discover the surprising one with the most promise. I also explore Microsoft's "Lazy Graph RAG" approach, which seems to trade one challenge for another but could be valuable in certain cases.

Ep36: What is a Developer Advocate + Balancing Digital Consumption

This week, I explored the Javalin Java framework and project decisions I'm trying to make. I also answer: What exactly does a Developer Advocate/Evangelist/Devrel do? Finally, I reflect on an article on balancing digital consumption with actual productivity.

Ep35: Vector Databases + Building Effective Agents

In this episode, there are two topics I'm looking forward to diving deeper into: vector databases and AI agents. I'm particularly interested in understanding how vector databases work, how they work with data, and their role in AI applications.
Then I share my thoughts on Anthropic’s article about Building AI Agents, which discusses their varying definitions—from simple workflows to fully autonomous systems—and provides practical examples. The article highlights the importance of starting simple, adding complexity only as needed.

Ep34: Outlines and Iterating + Lessons from Grace Hopper

In this podcast episode, hear my process of preparing for an upcoming conference with insights on how outlines enhance presentations and blog posts, as well as code and architecture. Also discuss how constant improvement is key with an online course as an example. Finally, I highlight a historical read on cryptography, and share reflections from Grace Hopper's 1982 lecture on data, hardware, and software, drawing connections between her insights and modern challenges in technology.