Skill

role-mobile:offline-first

Expert guidance on offline-first mobile architecture — local database sync (WatermelonDB, Realm, Hive, SQLite), conflict resolution strategies (last-write-wins, CRDT), optimistic UI patterns, background sync (WorkManager, BGTaskScheduler), and connectivity detection. Use when designing apps that must work reliably without network connectivity.

Install

npx claudepluginhub rnavarych/alpha-engineer --plugin role-mobile

Tool Access

This skill is limited to using the following tools:

ReadGrepGlobBash

Preview

- Designing an app that must function fully without network connectivity

Supporting Assets

references/local-db-conflict.mdreferences/sync-connectivity.md

SKILL.md

Similar Skills

skill-lookup

Searches, retrieves, and installs Agent Skills from prompts.chat registry using MCP tools like search_skills and get_skill. Activates for finding skills, browsing catalogs, or extending Claude.

prompts.chat

157.6k

prompt-lookup

Searches prompts.chat for AI prompt templates by keyword or category, retrieves by ID with variable handling, and improves prompts via AI. Use for discovering or enhancing prompts.

prompts.chat

157.6k

accessibility

Designs, implements, and audits WCAG 2.2 AA accessible UIs for Web (ARIA/HTML5), iOS (SwiftUI traits), and Android (Compose semantics). Audits code for compliance gaps.

everything-claude-code

156.2k

Stats

Parent Repo Stars9

Parent Repo Forks0

Last CommitMar 3, 2026

Actions

View Source View Plugin View on GitHub View README

role-mobile:offline-first

When to use

Designing an app that must function fully without network connectivity

Choosing a local database for offline storage (WatermelonDB, Realm, Hive, SQLite)

Defining conflict resolution rules before a sync feature is built

Implementing optimistic UI updates with mutation queues

Setting up background sync with WorkManager (Android) or BGTaskScheduler (iOS)

Handling connectivity detection, reachability checks, and retry strategies

Core principles

Network is optional — the app is fully usable offline; sync is background enrichment

Local-first reads — always read from local DB; never block UI on a network call

Optimistic writes — apply locally first, queue for server, reconcile on response

Conflict rules before code — LWW is simple; CRDT is correct; decide before building, not after

Partial sync is the norm — background tasks get killed; design every sync step to resume cleanly

Reference Files

references/local-db-conflict.md — WatermelonDB, Realm, Hive, and SQLite comparison for offline storage, last-write-wins strategy, field-level merge, CRDT types and libraries (Automerge, Yjs), Operational Transform tradeoffs

references/sync-connectivity.md — core offline-first principles, optimistic UI pattern and mutation queue implementation, Android WorkManager background sync, iOS BGTaskScheduler, cross-platform background fetch, connectivity detection libraries and best practices, exponential backoff strategy

Offline-First Architecture

When to use

Designing an app that must function fully without network connectivity
Choosing a local database for offline storage (WatermelonDB, Realm, Hive, SQLite)
Defining conflict resolution rules before a sync feature is built
Implementing optimistic UI updates with mutation queues
Setting up background sync with WorkManager (Android) or BGTaskScheduler (iOS)
Handling connectivity detection, reachability checks, and retry strategies

Core principles

Network is optional — the app is fully usable offline; sync is background enrichment
Local-first reads — always read from local DB; never block UI on a network call
Optimistic writes — apply locally first, queue for server, reconcile on response
Conflict rules before code — LWW is simple; CRDT is correct; decide before building, not after
Partial sync is the norm — background tasks get killed; design every sync step to resume cleanly

Reference Files

references/local-db-conflict.md — WatermelonDB, Realm, Hive, and SQLite comparison for offline storage, last-write-wins strategy, field-level merge, CRDT types and libraries (Automerge, Yjs), Operational Transform tradeoffs
references/sync-connectivity.md — core offline-first principles, optimistic UI pattern and mutation queue implementation, Android WorkManager background sync, iOS BGTaskScheduler, cross-platform background fetch, connectivity detection libraries and best practices, exponential backoff strategy