App Ionic framework Integrated with Java Web System JSF

Well, I need some guidance from some experienced developer, where the need is: I have an application created in Java Web with JSF in production. I need to develop a Hybrid App with Ionic framework (multplataforma), to receive notification and generate a table of records, etc. Example 1: When performing an update on the X table, the System Manager must notify in the App and allow to view the records in the table; Example 2: When a person schedules the App to update the X table, in the Database, and by the System Manager, ADM can view the records. What technology is best for this need, which will not give problem in the future due to the amount of person using the application? What better technology to communicate with the Managed System?