Engineering Local-First SQLite Replication in Cross-Platform Mobile Apps

Building resilient mobile architectures where offline isn't an error state, but the primary mode of user interaction.

Devon MillerSenior Architect · Sylvaxo

## Offline is Not an Edge Case

In mobile computing, intermittent network drops are inevitable. If an application blocks user actions with a spinner while waiting for a server roundtrip, user trust evaporates.

The Conflict-Free Replicated Data Type (CRDT) Approach

We utilize embedded SQLite engines on iOS and Android devices. User mutations are instantly committed to local state in under 4ms.

A background synchronization worker processes mutation queues using monotonic logical clocks to merge concurrent modifications without data loss.

7 min read2024-10-18

Architecting Zero-Downtime Next.js App Router Migrations at Scale

A practical deep-dive into strangler-fig routing patterns, RSC streaming boundaries, and preserving client state during enterprise monolith transitions.

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9 min read2024-09-24

How We Reduced Global P99 Latency from 840ms to 78ms with Edge Workers

Why regional centralized data centers fail global applications and how tiered in-memory Redis edge clusters solve real-time distribution.

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The Conflict-Free Replicated Data Type (CRDT) Approach

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