Reactive UI + Async Backend
with Realtime GraphQL API
Hack Day #14
Kevin C Chen
REST API Gateway
Comm Microservice
Policy Microservices
Task Microservices
-
Many roundtrips of API calls
-
Polling for update
Image source: https://youtu.be/AYbVMNtO-ro
Polling
Image source: https://youtu.be/AYbVMNtO-ro , https://github.com/hasura/graphql-engine/blob/master/assets/realtime.gif
Event Based Subscription
DEMO
Realtime GraphQL API
Run Scan Task
Computer Activation
Policy Assignment
Event System
Atomic
Functions
Event Trigger invokes
Webhooks
Subscription
Mutation
Asynchronous Update
State Driven Architecture
Reliable Eventing
Reactive UI Realtime API without Polling
No More
Stale Data
on UI
Only fetch the data we need
Thank you!
Realtime GraphQL API
Comm Microservice
Policy Microservices
Task Microservices
Event System
Serverless
Functions
Image source: https://docs.microsoft.com/en-us/azure/architecture/guide/architecture-styles/event-driven
Hasura can be used to create event triggers on tables. An Event Trigger atomically captures events (insert, update, delete) on a specified table and then reliably calls a webhook that can carry out any custom logic.
