How to flush the cache

Question

In Apps Script I need a way to flush the cache regardless of key. Alternatively I need a way to find all the keys which are currently cached.

When we cache items we

Answer 1

Cache is faster than properties? Don't think so, check out this:

function propertiesUser() { // 1272.0 , 1135.0
  var value = { a: 'a', b: 'b' }
  var key = 'ab';
  PropertiesService.getUserProperties().setProperty(key, value);
  var i = 0;
  var t = Date.now();
  while (i<100) {
    Logger.log( PropertiesService.getUserProperties().getProperty(key))
    i++
  }
  Logger.log( Date.now()-t);
}

function propertiesScript() { // 1190.0
  var value = { a: 'a', b: 'b' }
  var key = 'ab';
  PropertiesService.getScriptProperties().setProperty(key, value);
  var i = 0;
  var t = Date.now();
  while (i<100) {
    Logger.log( PropertiesService.getScriptProperties().getProperty(key))
    i++
  }
  Logger.log( Date.now()-t);
}

function cache() { // 4141.0
  var value = { a: 'a', b: 'b' }
  var key = 'ab';
  CacheService.getUserCache().put(key, JSON.stringify(value))
  var i = 0;
  var t = Date.now();
  while (i<100) {
    Logger.log( CacheService.getUserCache().get(key) )
    i++
  }
  Logger.log( Date.now()-t);
}