I found the following definition for ask as a noun.
a demand or situation that requires a specified degree of effort or commitment. Example: "it is a big ask for him to go and play 90 minutes"
Here is an example from a blog post, whose author seems to misuse that above definition. I would have written it as a question, or just omitted "I have an ask" to make it simple.
I have an ask: if you hear of anyone coming around to these parts [of the world] , do let me know.
My (possibly) flawed understanding is that it is informal (and borderline incorrect) to use ask as a noun in that context, and that using request should be preferred in about any circumstance. Yet, according to Google Ngrams, its usage has doubled in the past 20 years.
In what cases should one prefer writing "have an ask" instead of "have a request"? I'm sure I'm missing something here.