In backend systems, one of the most common debugging workflows is also one of the most frustrating: tracing a single request across multiple services using logs. You usually end up jumping between: log files on different servers Docker containers SSH sessions into machines repeated grep commands and manually reconstructing what actually happened grep is powerful, but it only gives you lines, not the story behind a request. That gap is what led me to build reqlog . Table of Contents What is reqlog Core usecases Architecture overview Performance decisions Transport layer abstraction Why this matters reqlog-ui (optional companion) Who is reqlog for What reqlog is NOT Closing thoughts Repo What is reqlog? reqlog is a Go-based CLI tool for tracing request flows across distributed logs. It allows you to search logs using keys like request_id , trace_id , or any custom event key and reconstruct a chronological timeline of events.…