Session: Our emergency move from Postgres to OLAP

James Greenhill, Data Engineer @ PostHog

If you are interested in OLAP data stores, decoupling apps, and schemas - this talk is for you. PostHog recently found product market fit and emergency migrated to an OLAP solution that fit their bill of requirements. James joins us to transparently share a compilation of PostHog's learnings of what went well and how they protected themselves from themselves. He'll also share some thoughts about the mistakes and friends that were made along the way.

Where & when?

Open Source Data Summit 2025 will be held on October 8th, 2025.

What is the cost of access to the live virtual sessions?

OSDS is always free and open for all to attend.

What is Open Source Data Summit?

OSDS is a peer-to-peer gathering of data industry professionals, experts, and enthusiasts to explore the dynamic landscape of open source data tools and storage.

The central theme of OSDS revolves around the advantages of open source data products and their pivotal role in modern data ecosystems.

OSDS is the annual peer hub for knowledge exchange that fosters a deeper understanding of open source options and their role in shaping the data-driven future.

Who attends OSDS?

OSDS is attended by data engineers, data architects, developers, DevOps practitioners and managers, and data leadership.

Anyone who is looking for enriched perspectives on open source data tools and practical insights to navigate the evolving data landscape should attend this event.

On October 2nd, 2024 we convened for discussions about:
  • Benefits of open source data tools
  • Cost/performance trade-offs
  • Building data storage solutions
  • Challenges surrounding open source data tool integration
  • Solutions for the cost of storing, accessing, and managing data
  • Data streams and ingestion
  • Hub-and-spoke data integration models
  • Choosing the right engine for your workload
Are you interested in speaking or sponsoring the next Open Source Data Summit?

Submit a talk proposal here or reach out to astronaut@solutionmonday.com.

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