4 ms·

Elaborate please, why is receiving messages in an ordered fashion a foot gun and a trap? Isn’t it totally acceptable to rely on this type of behavior if your us

• royjacobs 6y ago
  Because this will break in situations where you have multiple consumers or if there's any sort of redelivery/failure scenario. Ordering only works if there's a single-threaded consumer somewhere that processes exactly one message at a time and blocks processing as soon as there is an error of any kind. The amount of scenarios that this works for is probably very small. The footgun is that people don't realize the above constraints and assume that ordering will magically fix a lot of ordering issues (some more examples of this in the rest of this comments section).
• vp8989 6y ago
  One way it can be a foot gun is: To ensure ordering, systems like these have to block consumption on any given partition until it gets an ACK. If publishers of the data don't understand that, they can publish with too coarse a partition key which greatly decreases the amount of concurrent consumption you can have. Not knocking how these systems work, it's more that people generally don't "read the fine print", especially these days with cloud services.