Cover art for podcast Tech Lead Journal

Tech Lead Journal

131 EpisodesProduced by Henry SuryawirawanWebsite

Great technical leadership requires more than just great coding skills. It requires a variety of other skills that are not well-defined, and they are not something that we can fully learn in any school or book. Hear from experienced technical leaders sharing their journey and philosophy for building… read more


#88 - Observability Engineering - Liz Fong-Jones

“Observability is a technique for ensuring that you can understand novel problems in your system. Can you understand what’s happening in your system and why, without having to push a new code by slicing and dicing existing telemetry signals that are coming out of your system?"

Liz Fong-Jones is the co-author of the “Observability Engineering” book and a Principal Developer Advocate for SRE and Observability at Honeycomb. In this episode, Liz shared in-depth about observability and why it is becoming an important practice in the industry nowadays. Liz started by explaining the fundamentals of observability and how it differs from traditional monitoring. She explained some important concepts, such as the core analysis loop, cardinality and dimensionality, and doing debugging from a first principle. Later, Liz shared the current state of observability and how we can improve our observability by doing observability driven development and improving our practices based on the proposed observability maturity model found in the book.

Listen out for:

  • Career Journey - [00:05:44]
  • Observability - [00:06:30]
  • Pillars of Observability - [00:09:57]
  • Monitoring and SLO - [00:12:28]
  • Core Analysis Loop - [00:15:06]
  • Cardinality and Dimensionality - [00:18:41]
  • Debugging from First Principle - [00:21:20]
  • Current State of Observability - [00:26:49]
  • Implementing Observability - [00:30:20]
  • Observability Driven Development - [00:36:53]
  • Having Developers On-Call - [00:39:06]
  • Observability Maturity Model - [00:41:59]
  • 3 Tech Lead Wisdom - [00:44:10]


Liz Fong-Jones’s Bio
Liz is a developer advocate, labor and ethics organizer, and Site Reliability Engineer (SRE) with 17+ years of experience. She is an advocate at Honeycomb for the SRE and Observability communities, and previously was an SRE working on products ranging from the Google Cloud Load Balancer to Google Flights. She lives in Vancouver, BC with her wife Elly, partners, and a Samoyed/Golden Retriever mix, and in Sydney, NSW. She plays classical piano, leads an EVE Online alliance, and advocates for transgender rights.

Follow Liz:

Our Sponsor

Today’s episode is proudly sponsored by Skills Matter, the global community and events platform for software professionals.
Skills Matter is an easier way for technologists to grow their careers by connecting you and your peers with the best-in-class tech industry experts and communities. You get on-demand access to their latest content, thought leadership insights as well as the exciting schedule of tech events running across all time zones.
Head on over to to become part of the tech community that matters most to you - it’s free to join and easy to keep up with the latest tech trends.

Like this episode?
Subscribe on your favorite podcast app and submit your feedback.
Follow @techleadjournal on LinkedIn, Twitter, and Instagram.
Pledge your support by becoming a patron.
For more info about the episode (including quotes and transcript), visit

Educational emoji reaction


Interesting emoji reaction


Funny emoji reaction


Agree emoji reaction


Love emoji reaction


Wow emoji reaction


Listen to Tech Lead Journal


A free podcast app for iPhone and Android

  • User-created playlists and collections
  • Download episodes while on WiFi to listen without using mobile data
  • Stream podcast episodes without waiting for a download
  • Queue episodes to create a personal continuous playlist
RadioPublic on iOS and Android
Or by RSS
RSS feed

Connect with listeners

Podcasters use the RadioPublic listener relationship platform to build lasting connections with fans

Yes, let's begin connecting
Browser window

Find new listeners

  • A dedicated website for your podcast
  • Web embed players designed to convert visitors to listeners in the RadioPublic apps for iPhone and Android
Clicking mouse cursor

Understand your audience

  • Capture listener activity with affinity scores
  • Measure your promotional campaigns and integrate with Google and Facebook analytics
Graph of increasing value

Engage your fanbase

  • Deliver timely Calls To Action, including email acquistion for your mailing list
  • Share exactly the right moment in an episode via text, email, and social media
Icon of cellphone with money

Make money

  • Tip and transfer funds directly to podcastsers
  • Earn money for qualified plays in the RadioPublic apps with Paid Listens