Beat the Single Exclusive Queue Bottleneck
Key-based JMS partitioning in SAP Cloud Integration — stay in order and process fast
Every integration developer meets this wall sooner or later: “these messages must be processed in order.” The easy fix — a single exclusive queue: one consumer, one message at a time — works perfectly and scales terribly. The moment volume rises, that single ordered lane becomes the bottleneck everything queues behind.
Sound familiar? How many times have you “solved” ordering by throttling everything down to one-at-a-time, then watched the backlog grow?
Here's the good news: you almost never need global order. You need order per key. Once you see that, you can keep strict ordering and run in parallel — on plain JMS, no premium add-ons. Let's build the idea up from scratch.
