The Open Source Observability Podcast - EP #1: Clickhouse, Data Lakes, and AWS S3 with Joshua Lee

Jun 27, 2025

In this episode we get to dive into some of Josh's favourite databases and telemetry sources for observability. Listen to learn what open source software you could benefit from including in your toolstack!

Joshua Lee is a Developer Advocate at Altinity®, where he applies his observability and engineering background to ClickHouse® use cases and creates educational content to support the open source community. He has over 15 years of experience in leading software projects for a broad scope of industries.

Listen anywhere you get your podcasts (RSS): https://anchor.fm/s/1068ca260/podcast/rss

Timestamps:

00:00 Introduction

00:57 Who Josh is

01:48 Why FOSS?

04:26 OLAP vs OLTP Databases

05:53 Why Clickhouse is the perfect database for observability

08:20 High Cardinality vs. High Dimensionality

08:57 Best observability telemetry sources: eBPF, Kafka, OTEL, and FluenD

10:48 Project Antalya & the Altinity Clickhouse Operator

13:07 “The Eighth Wonder of the World, S3”

15:54 Data Warehouse Vs. Data Lake Vs. Data Lakehouse

19:50 How to prepare for production outages and “Virtual War Rooms”

22:16 MCPs & AIOps

25:28 The challenge of observability adoption

27:18 How Josh uses Coroot to "observe observability"

28:50 How Altinity helps Clickhouse users succeed

31:48 Building something that works: the beauty of software development

34:00 Working on OTEL

35:20 Upcoming events where you can meet Josh

Have an open source observability project or developer you would like us to cover next? Send Alex an email: https://coroot.com/contact/

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🐧🐝 Try Coroot fully open source or Enterprise: https://t.ly/qBH9f

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🔗Josh’s LinkedIn: https://www.linkedin.com/in/joshuamlee
🔗Learn more about Altinity: https://altinity.com/
🔗Check out Altinity's open source projects: https://github.com/Altinity
🔭📊 Watch Josh's talk “O11ly-in-one: a unified approach to telemetry”: https://t.ly/mv6iS

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_Altinity® is a Registered Trademark of Altinity, Inc. ClickHouse® is a registered trademark of ClickHouse, Inc. Altinity is not affiliated with or associated with ClickHouse, Inc._

#Observability #Coroot #OpenTelemetry #eBPF #Kubernetes #Clickhouse #Altinity #Postgres #AWS #s3 #DevOps #SREs #Opensource