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The NiFi EvaluateJsonPath processor lets you specify a JSON path, which will be applied to the content of a flow file. For most situations that works great, but what if you want to retrieve a value where the property you want to read depends on a flow file attribute? EvaluateJsonPath doesn’t support the expression language […]

If you have made or are considering an investment in MarkLogic, you’ve got an opportunity or problem you weren’t able to address with traditional databases. You’ve selected great technology and you see real value to your business. Next challenge: implementation. You’ve got a good team of developers, but MarkLogic is new to them. They are […]

5 o’clock is 5 o’clock, right? Well, not once we start thinking about time zones. 17:00:00-05:00 (5pm here on the east coast of the US) is 22:00:00Z in London. But that’s simple enough; this is why we have the time zone expressed as part of date times. For a recent project, I needed to check […]

We can load data into a data hub from a variety of upstream data sources. What if we want to delete documents that have been deleted upstream? In the ideal case we’re using a Change Data Capture system and we get notifications about those deletions, but sometimes we don’t have that. How can we detect […]