Lightning Lessons

You Don't Need a Graph DB

Hosted by Jo Kristian Bergum and Hamel Husain

Tue, Sep 30, 2025

6:00 PM UTC (45 minutes)

Virtual (Zoom)

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197 students

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What you'll learn

When graph databases actually make sense

Understand the use cases where dedicated graph DBs provide real value versus when they're unnecessary complexity.

Implement graph structures in general-purpose databases

Learn how to represent (node, edge, node) relationships using PostgreSQL, MySQL, or your existing db infra.

The real bottleneck: graph modeling, not performance

Discover why defining nodes and edges is the hard part, not traversal speed, and how to approach knowledge graph design

Alternatives that might serve you better

Explore how search engines, document stores, and SQL databases can handle many graph workloads without specialized tools

Why this topic matters

Many teams adopt graph databases believing they need specialized tools for relationship data, adding unnecessary complexity to their stack. This session reveals that for most use cases, the performance benefits don't justify the overhead. You'll learn to evaluate whether you truly need graph DB capabilities and how to implement graph patterns using simpler alternatives.

You'll learn from

Jo Kristian Bergum

Search & Retrieval Expert, CEO of Hornet.dev

Jo Kristian Bergum is currently the CEO of Hornet, a company building advanced retrieval engines designed for AI agents. Based in Trondheim, Norway, Bergum is recognized for his expertise in search technology, previously contributing notable work to projects like Vespa and writing on topics such as semantic search, ranking models, and large-scale vector databases.

Hamel Husain

ML Engineer with 20 years of experience

Hamel is a machine learning engineer with over 20 years of experience. He has worked with innovative companies such as Airbnb and GitHub, which included early LLM research used by OpenAI, for code understanding. He has also led and contributed to numerous popular open-source machine-learning tools. Hamel is currently an independent consultant helping companies build AI products.

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