AWS AppSync Explained: GraphQL, Resolvers, Live Updates and Recovery

Understand AWS AppSync by following a learning dashboard through GraphQL requests, resolvers and live progress updates. Repair a missing subscription update, enforce student ownership, and compare conflict recovery and caching responsibilities. Chapters 00:00 A saved progress update did not reach the learner 00:50 GraphQL describes the requested fields, not a database engine 01:40 A requested field reaches data through its resolver 02:31 Use one resolver or a sequence for the work required 03:18 API access and record ownership are different checks 04:14 Subscriptions follow an associated mutation path 05:06 Worked example: the database changed but the screen did not 05:57 Two valid edits can disagree about the same progress 06:46 Worked example: stale progress must not erase newer completion 07:39 Reconnect by reconciling state, not assuming nothing was missed 08:28 Cache keys must preserve the student's data boundary 09:23 A compact response can still trigger expensive source work 10:16 Verify the request, live update and recovery paths 11:08 Connect the API contract to verified application behavior Official AWS references AWS documentation: https://docs.aws.amazon.com/appsync/l... AWS documentation: https://docs.aws.amazon.com/appsync/l... AWS documentation: https://docs.aws.amazon.com/appsync/l... AWS documentation: https://docs.aws.amazon.com/appsync/l... AWS documentation: https://docs.aws.amazon.com/appsync/l... AWS documentation: https://docs.aws.amazon.com/appsync/l... #AWS #CloudArchitecture