WorkManager is the go-to Jetpack library for deferrable, guaranteed background work in Android. Whether you're syncing offline data, uploading logs, or scheduling periodic tasks, WorkManager provides a lifecycle-aware and battery-conscious solution. In this deep dive, we explore how WorkManager works under the hood — including job scheduling logic across API levels, chaining, constraints, retries, periodic tasks, coroutines, and testing strategies. Packed with real-world examples and best practices, this guide is your blueprint for building resilient background tasks in modern Android development.
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