Building Real time Data in Web Applications with Graal js
summary
Demo app pushes live vote counts using Graal.js (Node on JVM) with Socket.IO to clients, backed by Oracle DB continuous query notification and APEX web service calls. A subscription groups events with a 1 second debounce to avoid emitting every insert; the presenter proves scaling by scripting a thousand rapid votes (video demo). Java interop fixes JS number issues via java.math.BigDecimal. GraalVM runs Node apps on the JVM, lists ~96% npm compatibility, and offers SubstrateVM AOT for faster startup.
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chapters (7)
- 0:00Start
- 4:03Techniques to bridge the gap
- 5:44New technologies have emerged
- 7:41WebSocket example
- 16:56Advanced Queuing
- 18:31Continuous Query Notification
- 27:31JavaScript vs JavaScript on Graal
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