Performance

React Native in a Monorepo: pnpm Workspaces, Turborepo, and CI Builds That Finish Before Lunch

September 18, 2026 · AppReactors Team

Most React Native teams don't slow down because of Hermes or the New Architecture — they slow down because a single app repo turned into five packages, two apps, and a 40-minute CI build. Here is the monorepo layout, caching strategy, and CI pipeline we set up for React Native clients, plus the failure modes that only show up once Metro has to resolve outside the app directory.

Background Work in React Native: expo-background-task, Headless JS, and Silent Pushes

September 14, 2026 · AppReactors Team

Background sync in React Native is not one feature but four different platform mechanisms. A practical guide to expo-background-task, Headless JS and WorkManager, BGTaskScheduler, silent pushes, Doze-mode reality, and how to test any of it before you ship.

Observability for React Native: Source Maps, Crash-Free Rate, and a Cold-Start Budget

September 9, 2026 · AppReactors Team

Most React Native teams find out their release is broken from an app store review. Here is the observability setup we install on every engagement: readable Hermes stack traces, crash-free rate tied to each OTA release, tracing for the screens that matter, and a cold-start budget you can actually defend.

Lists That Don't Jank: FlashList v2, FlatList, and LegendList on the New Architecture

September 9, 2026 · AppReactors Team

Long scrolling lists are still where most React Native apps lose their frame budget. Here is how we pick between FlatList, FlashList v2, and LegendList in 2026, how to measure the difference honestly, and the recycling rules that decide whether your list feels native or feels like a website.

Reanimated 4 in Practice: CSS Animations, the Worklet Rules, and Migrating from v3

August 31, 2026 · AppReactors Team

Reanimated 4 only runs on the New Architecture, and it brings a CSS-style animation API alongside the worklet APIs you already know. Here is how the two models fit together, when to reach for each, and what actually breaks when you upgrade a production app from v3.

React Compiler in React Native: Turning It On Without Breaking Your App

August 31, 2026 · AppReactors Team

React Compiler now ships as an opt-in flag in React Native. Here is how we enable it on client projects: what it actually memoises, what it refuses to touch, how to verify the win with the profiler, and the lint rules you have to fix first.

Image Caching in React Native, 2026 Edition: expo-image and When to Roll Your Own

August 21, 2026 · Justin Rohweller

Our 2020 image-caching tutorial used commands and APIs that no longer exist. The 2026 answer is five lines of expo-image — plus a hand-rolled version on the new File API for the cases that genuinely need one.