Sebastien Stormacq

Offline first & automatic data synchronisations for your web and mobile applications

A user updates their data in airplane mode. When they reconnect, it syncs instantly across all devices. See how to build this seamless offline-first experience.

Offline first & automatic data synchronisations for your web and mobile applications
#1about 5 minutes

Understanding the challenges of offline-first applications

Offline-first applications prioritize data availability over strong consistency, which introduces challenges in data synchronization and conflict resolution.

#2about 1 minute

Introducing AWS Amplify as an offline-first solution

AWS Amplify is an open-source framework that simplifies building offline-first applications by providing client-side libraries and generating a cloud backend.

#3about 8 minutes

Demonstrating real-time sync and offline capabilities

A live demo showcases how two separate clients stay synchronized in real-time and how changes made offline are automatically synced upon reconnection.

#4about 7 minutes

Exploring the architecture of Amplify DataStore

Amplify DataStore uses a local persistence layer and a synchronization engine to manage data, abstracting away the complexity of caching and backend communication.

#5about 6 minutes

Using the DataStore API for data and real-time updates

The DataStore API provides simple methods like save, query, and delete for local data manipulation, plus an observeQuery function for real-time UI updates.

#6about 8 minutes

Implementing conflict detection and resolution strategies

Amplify DataStore offers multiple conflict resolution strategies, including a default auto-merge based on versioning, optimistic concurrency, and custom server-side logic.

#7about 5 minutes

How delta sync enables efficient data synchronization

Instead of downloading the entire database, DataStore uses a delta sync mechanism with a change log to efficiently fetch only the data that has changed.

#8about 15 minutes

Q&A on developer advocacy and technical details

The session concludes with a Q&A covering the role of a developer evangelist, learning resources for AWS, and deeper technical questions about conflict resolution.

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