Using the Google Apps Script Cache Service for objects above 100Kb

ChunkyCache.gs

function ChunkyCache(cache, chunkSize){
  chunkSize = chunkSize || 100*1024;
  return {
    put: function (key, value, timeout) {
      var json = JSON.stringify(value);
      var cSize = Math.floor(chunkSize / 2);
      var chunks = [];
      var index = 0;
      while (index < json.length){
        cKey = key + "_" + index;
        chunks.push(cKey);
        cache.put(cKey, json.substr(index, cSize), timeout+5);
        index += cSize;
      }
      
      var superBlk = {
        chunkSize: chunkSize,
        chunks: chunks,
        length: json.length
      };
      cache.put(key, JSON.stringify(superBlk), timeout);
    },
    get: function (key) {
      var superBlkCache = cache.get(key);
      if (superBlkCache != null) {
        var superBlk = JSON.parse(superBlkCache);
        chunks = superBlk.chunks.map(function (cKey){
          return cache.get(cKey);
        });
        if (chunks.every(function (c) { return c != null; })){
          return JSON.parse(chunks.join(''));
        }
      }
      else return null;
    }
  };
};

function testGetCacheFrom(){
  var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Data');
  var data = sheet.getDataRange().getValues();
  var chunky = ChunkyCache(CacheService.getDocumentCache(), 1024*90);
  chunky.put('Data', data, 120);
  var check = chunky.get('Data');
  var sheetPut = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Out');
  for (c in check) {
     sheetPut.appendRow(check[c]);
  }
}

Added default chunkSize of 100kb if none is specified and also changed the .get() method to return null (vice undefined) if there is no data present, to align with normal Cache Service behavior.