Service invoked too many times for one day: urlfetch

Question

I am getting the following error in my Sheets Add-on:

Service invoked too many times for one day: urlfetch

I\'m aware of the limits here, but h

Answer 1

You currently can not do it.

Perhaps run a counter in your script.

Answer 2

I have run into that too. I only have 1000 rows going out to a web service. Data did not change neither in my sheet nor in the service. But at some point today most of my cells show #Error with this cause.

I feel like it's going out to re-fetch the results way too often. Is there not some caching that can be employed?

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UPDATE (long time due): adding cache was exactly what was needed. So I implemented a function fetch(url) which uses a cache and that way avoids the replicate calls.

function fetch(url) {
  var cache = CacheService.getScriptCache();
  var result = cache.get(url);
  if(!result) {
    var response = UrlFetchApp.fetch(url);
    result = response.getContentText();
    cache.put(url, result, 21600);
  }
  return result;
}