# A Good System Design Tackles Down the Hot Path First

DevFeed: [A Good System Design Tackles Down the Hot Path First](<https://devfeed.tech/articles/a-good-system-design-tackles-down-the-hot-path-first-17946.md>)

Original publisher: [Read original article](<https://newsletter.systemdesignclassroom.com/p/a-good-system-design-tackles-down-the-hot-path-first>)

Author: Raul Junco

Published: 2026-06-13T11:31:25Z

Content type: tutorial

Language: en

Sources: [System Design Classroom](<https://devfeed.tech/sources/system-design-classroom.md>)

Topics: [Architecture & Design](<https://devfeed.tech/topics/architecture-design.md>), [Microservices](<https://devfeed.tech/topics/microservices.md>), [Caching](<https://devfeed.tech/topics/caching.md>)

Tags: [cache](<https://devfeed.tech/tags/cache.md>), [microservices](<https://devfeed.tech/tags/microservices.md>)

## AI overview

The article argues that system design should begin by identifying the system's hot paths--the specific parts experiencing pressure--before adding caches, replicas, queues, or microservices. It warns that scaling decisions made without understanding traffic patterns can target the wrong bottleneck.

## Source excerpt

Before you add cache, replicas, queues, or microservices, understand where the system actually feels pressure.