Competing Consumers Pattern

What does it consist of

• Process of concurrent requests that have variable frequency and workload
• Implementation of messaging system to pass requests through to consumer services
• Can require a message queue system as a communication channel

What to consider

• Is message processing order important 
• Messages should be idempotent to cater for failures
• Do we need to handle results (callback functions, results pool, ..)
• Scalability of the messaging system would require multiple message queues
• Reliability of the messaging system (no messages lost)

Is Node.JS an implementation ?