Initial GET query to table/view is slow

I’m calling the API (https://api.airtable.com/v0/:baseId/:tableId/:viewId) to get the records from a table, using a view.  There are ~1000 records in the table and about ~200 that are displayed by the view.

I’ve noticed that the first time that I call the method that calls the API can take about 10-20 to complete.  Subsequent calls are subsecond.

Is this a characteristic of API itself?  Perhaps it caches the dataset after the first call.

What, if anything, can I do to prevent this behavior?

This is the service layer’s method:

export const getTrainees = async () => {
  console.log('AirtableService.getTrainees()')

  const TABLE_ID = 'YYY';
  const VIEW_ID = 'XXX';
  const fields = ['Full Name'];

  const params = new URLSearchParams({ view: VIEW_ID });
  fields.forEach(field => params.append('fields[]', field));  

  const url = `${AIRTABLE_BASE_URL}/${BASE_ID}/${TABLE_ID}?${params.toString()}`;

  let allRecords = [];
  let offset = undefined;

  do {

    const pageUrl = offset ? `${url}&offset=${encodeURIComponent(offset)}` : url;
    const response = await fetch(pageUrl, {
      method: 'GET',
      headers: {
        Accept: 'application/json',
        Authorization: `Bearer ${process.env.AIRTABLE_API_KEY}`
      }
    });

    if (!response.ok) {
      throw new Error(`Airtable API error: ${response.status}`);
    }

    const data = await response.json();

    if (Array.isArray(data.records)) {
      allRecords = allRecords.concat(data.records);
    }
    offset = data.offset;

  } while (offset);

  return allRecords;
}