ByteDance Terminal Technology

Mar 2, 2022 · Mobile Development

Analyzing and Optimizing Kapt Memory Consumption in Android Projects

This article examines the memory‑intensive behavior of Kotlin's Kapt annotation‑processing tool in large Android builds, explains its internal two‑step stub‑generation and Java‑apt workflow, analyzes OOM root causes with VisualVM, and presents a practical source‑filtering fix that dramatically reduces compile time and memory usage.