One of the most underrated skills for a business or system analyst in integration projects is knowing when to recommend a message queue — tools like RabbitMQ, Kafka, or Azure Service Bus.
Let’s be honest: not every integration needs one. But when it does, queues can save your system from chaos.
What Queues Actually Solve
Message queues are not just “another tech buzzword.”
They handle asynchronous communication — meaning systems don’t have to wait for each other to respond.
Example:
Instead of sending an invoice from System A and waiting for System B to confirm,
System A drops the invoice into a queue.
System B picks it up when it’s ready.
Benefits:
- Smooth data flow even if one system is slow or offline
- Built-in retry and error handling
- Better scalability — handle thousands of messages per second
- Natural decoupling between systems (less spaghetti logic)
When Analysts Should Recommend Queues
You don’t need a queue for every integration. But consider it when you see these signs:
- High volume of transactions — more than a few thousand per hour.
- Unstable or external systems — APIs that sometimes fail or have latency issues.
- Different processing speeds — one system sends faster than another can receive.
- Business-critical data — where you can’t risk data loss or duplication.
- Complex workflows — where multiple consumers (systems) need the same event.
When Not to Use Queues
- For real-time user interactions (e.g., “show me the balance now”) — queues add delay.
- For simple 1:1 synchronous API calls — direct REST is cleaner and faster.
- When the team can’t support monitoring (queues need visibility and alerts).
As an analyst, you don’t have to design Kafka topics or RabbitMQ exchanges.
But you should recognize the moment when a queue turns from “technical detail” into a business enabler — ensuring reliability, scalability, and peace of mind for everyone involved.