I’m developing a system with two separate frontends using Next.js: one for clients and one for admins. Both frontends need to be synchronized such that when a client makes a booking, it should immediately appear in the admin frontend.

Technologies:

Backend: Laravel ( Rest API’s)
Frontend: Next.js

Scenario:

A booking is made on the client frontend.
This booking should appear in real-time on the admin frontend.
Requirements:

The two frontends are separately developed and deployed.
The synchronization should happen in real-time.

What I’ve Considered:

REST API with Webhooks: Using a REST API to create the booking and webhooks to notify the admin frontend.
WebSockets: Using WebSockets for real-time communication between the server and the frontends.
Message Brokers: Using a message broker like RabbitMQ or Kafka to handle the communication.
GraphQL Subscriptions: Using GraphQL with subscriptions for real-time updates.
Server-Sent Events (SSE): Using SSE to push updates to the admin frontend.
Questions:

What is the best approach to achieve real-time synchronization between these two frontends?
Can you provide examples or point me to resources for implementing the suggested approaches with Laravel and Next.js?

Thank you for your help!