What communication platform is used for distributed Vaults?

The communication platform used for distributed Vaults in CyberArk is RabbitMQ. This choice is optimal due to RabbitMQ's design as a robust message broker, which facilitates effective communication between distributed systems. In a scenario with multiple Vaults, RabbitMQ provides reliable message queuing and routing, ensuring that communications between different Vault instances are handled efficiently and effectively.

Its support for various messaging protocols and ease of integration with diverse systems make it an ideal choice for environments that require high throughput and reliable messaging capabilities. Furthermore, RabbitMQ's strength in managing workloads and its ability to scale horizontally align well with the needs of distributed Vault setups, enabling them to maintain performance even under heavy load.

In contrast, while other options like ActiveMQ and Apache Kafka are also popular messaging frameworks, they may not be specifically tailored for the communication needs of CyberArk's distributed Vaults in the same way that RabbitMQ is. Celery, on the other hand, is primarily a task queue and not primarily designed for the kind of message brokering and reliable communication required for distributed Vaults.