In this episode, Ariane joins for an in-depth conversation about performance logging. With more than 10 years focusing on this problem, Ariane moved from Facebook Seattle to Facebook London and started a team with other engineers that are as passionate about this subject as she is. You'll hear about why instrumenting performance markers is important for a healthy app, what makes a good metric and how to build sustainable logging systems. If you're just getting started with performance logging, tune in to hear Ariane's advice on how to get started. For feedback, please reach out on Twitter at @insidefbmobile or drop us an email at mobilepodcasts@fb.com. Projects discussed: - QNNPack: https://code.fb.com/ml-applications/qnnpack/ - StateService: https://code.fb.com/open-source/stateservice/ - Profilo: https://facebookincubator.github.io/profilo/ - Litho: https://fblitho.com/