The Future of Real-time | Offline | Data
summary
Describes AWS Amplify’s client-side system that makes apps write once to a single local database and then sync to AppSync using GraphQL schemas; claims include delta sync (only changes since last sync), a change ledger for replay and TTL, and conflict handling via monotonic version counters with an auto merge strategy or Lambda hooks. Front-end DataStore is open source and runs on web iOS Android and React Native; sync integration to the cloud is optional and reported to work at scale for collaborative, offline‑first use cases.
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chapters (20)
- 0:00Start
- 0:35Core features should function with or without an internet connection.
- 1:33Provide end users with a consistent UX when internet connectivity is slow or non-existent.
- 1:54An application that functions within a time frame that the user senses as immediate or very close to it.
- 5:55REAL TIME & OFFLINE APPLICATIONS WHY
- 6:48USER EXPERIENCE
- 7:12REAL TIME & OFFLINE APPLICATION CONSIDERATIONS
- 7:31There are only two hard things in Computer Science: cache invalidation and naming things.
- 10:01MULTIPLE PLATFORMS
- 10:12SCALABILITY.
- 10:28REAL TIME & OFFLINE APPLICATION SOLUTIONS
- 18:10REAL TIME OPTIONS
- 18:29SERVER SENT EVENTS
- 20:16SINGLE REHYDRATE QUERY
- 20:45CONFLICT DETECTION AND RESOLUTION
- 21:42Objects tagged with metadata
- 23:59AUTO MERGE
- 26:42DELTA SYNC
- 27:27TIME TRAVEL
- 27:39DB OPTIMIZATION
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