a blog?
The Observability-Free Zone For most companies, “mobile observability” is a misnomer. I say this because the data that most mobile devs have to “observe” their app in production is laughably simplistic. The vast majority make due with basic crash tracking and precomputed metric aggregates as the only lens into how their app is performing in…
Hi. It’s been like 9 months since I last posted. Two young kids, one with special needs, will do that to you. But thanks to recent bed time routine changes, I have some enforced time out of the apartment and in front of a computer every night for the foreseeable future. So what am I…
The granddaddy of Android performance metrics is probably application cold start. Setting aside the complications of how to precisely measure it (PY breaks it down really well in this post), lets think about what it represents. Beginning with a user-triggered action, the app process is created by the OS by forking the zygote, leading to…
App metrics, especially performance metrics, are only useful if they are predictive or actionable. By predictive, I mean you can, with varying degrees of certainty, assume changes to other metrics or outcomes if that metric were to change, for better or for worse. If P95 changes for request latency changes for some end point, does…
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