Realm DB and Real Time data sync features sample implementation when working for building the IEX trading API to mobile delivery

1. Realm Integration
My Portfolio with market news app for IEX Securities Exchange
by: Vijay Polsani

2. Realm Analysis
Realm Platform is a flexible platform containing features like.
● 2-Way data SYNC with real time collaboration
● Always on Mobile feature with offline-network support with auto synchronization of data
● Build to scale via Cloud offerings of Managed & Dedicated Cloud (AWS, Azure, GCP)
● Containerized server for self management thru Kubernetes scale on choice of your
Cloud
● Addressing small dev base with $30/month plans
● Open source Realm DB as a replacement for commercial tightly controlled platform like
Firebase
● Realm platform support for JWT for Oauth apps and other OpenId providers along with
simple user/password authentication
● Security first with isolation of Realms per Account and Instance

3. Demo Overview
● Android demo app with real time market news updates to stock
portfolio
● Leveraging Realm DB & Realm Cloud Platform
● Event handler for changes to the data based on ‘change’
(insertions)
● Realm on Cloud server for scale & Query based filtering in UI

4. Architecture of Realm Integration

5. Demo & Others
UI: https://github.com/vijaypolsani/todo-query-based-sync
Event Handler: https://github.com/vijaypolsani/iex-realm-service/tree/DEMO
Pain Points:
● Realm configuration from UI to Applications is complicates with SYC URL
● Documentation suggests to use examples, better approach is to elaborate the API and
their sample usages of the API
● Realm schema changes on creation is not allowed. A better experience would be for
auto migration capability (Sounds more like RDBMS lacking NoSql features like
Firebase)