How to read a service call chain without drowning in diagrams
A practical way to walk a call chain from the user action to the slowest hop, using three questions that keep the map useful.
Field notes
Notes from the mapping table
Short articles on the questions that come up during application architecture analysis for service dependencies and performance bottlenecks.
Finding bottlenecks before peak season, not during it
What to measure six weeks out, which paths to prioritize, and how to separate capacity limits from design friction.
Circular dependencies: spotting them before they stall a release
Signs that two services have become mutually dependent, why staging often hides the problem, and a calm way to untangle ownership.
What to bring to an architecture review in Seoul
A short packing list for design docs, metrics exports, and named contacts so a review week actually produces decisions.