fetch interception — 2 Technical Articles

Nov 21, 2025 · Frontend Development

Build a Chrome Extension to Mock API Calls Without Memory Bloat

This guide explains how to create a lightweight Chrome extension that intercepts fetch and AJAX requests, lets you define mock rules without installing heavy clients, and dramatically reduces memory usage during front‑end development.

API mockingChrome Extensionfetch interception

0 likes · 11 min read

Build a Chrome Extension to Mock API Calls Without Memory Bloat

Tencent IMWeb Frontend Team

May 17, 2021 · Frontend Development

How a Hidden fetch Interception Caused Memory Leaks in FLV Live Streams (and How to Fix It)

This article details a severe memory‑leak crash observed on a Tencent Classroom FLV live‑stream page during IMWebConf 2020, outlines the systematic reproduction steps, identifies the culprit as a fetch‑interception mechanism in an internal reporting tool, and presents a whitelist‑based fix to prevent future crashes.

Frontend Debuggingfetch interceptionflv streaming

0 likes · 8 min read

How a Hidden fetch Interception Caused Memory Leaks in FLV Live Streams (and How to Fix It)