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It is REALLY hard to troubleshoot a stateless function process that has a lot of incoming data, and needs to mix a low latency, low cost, but limited query caching system, and a high latency, high cost, permanent data storage target.
Where the same target entity is possibly being manipulated by multiple functions in a stateless manner.
It runs just fine when run one at a time, but when run full firehose...
There is a bug in my logic, but I can't find it.