Wolfram Function Repository
Instantuse addon functions for the Wolfram Language
Function Repository Resource:
Divide a Map operation into batches, performing an evaluation between batches
ResourceFunction["MapBatched"][f,expr] applies f to each element on the first level of expr,pausing for one second every five elements. 

ResourceFunction["MapBatched"][f,expr,action] applies f to each element on the first level of expr,performing action every five elements. 

ResourceFunction["MapBatched"][f,expr,action,n] uses batches of length n. 
MapBatched applies a function to a list or association. By default, batches consist of five entries, and the action taken is to Pause for one second per batch:
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The result using MapBatched is identical to an ordinary Map except for inserting this Pause:
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When the number of elements is less than the batch size, no Pause is inserted:
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The expr can be any expression over which the function f can be mapped (e.g. lists and associations). The action can be any expression:
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The size n can be any integer:
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One intended usage is to access web APIs that restrict request rates. For example, manual access to PubChem via the Pug API:
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Define a list of chemicals:
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Retrieve results from the API in batches:
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