static ExpiringMap2<S, S> loadSnippet_simpleCache_map = new ExpiringMap2(10000);
static Lock loadSnippet_simpleCache_lock = lock();

// timeout for loadPage
static int loadSnippet_simpleCache_timeout = 60000;

static S loadSnippet_simpleCache(S id) {
  if (id == null) null;
  lock loadSnippet_simpleCache_lock;
  id = fsI(id);
  
  // get from cache
  S src = loadSnippet_simpleCache_map.get(id);
  if (src != null) ret src;
  
  // load & put in cache
  Int oldTimeout = setThreadLocal(loadPage_forcedTimeout_byThread, loadSnippet_simpleCache_timeout);
  try {
    src = loadSnippet(id);
    if (src != null)
      loadSnippet_simpleCache_map.put(id, src);
    ret src;
  } finally {
    loadPage_forcedTimeout_byThread.set(oldTimeout);
  }
}