fuuuuck.java

gistfile1.txt

new Thread() {
  var entity = db.get('foo');
  // entity.siblings = [] due to race condition
  entity.siblings.push('boo');
  // entity.siblings = ['boo']
  db.put('foo', entity);
  // one of these puts overwrote the other...
}.start();


new Thread() {
  var entity = db.get('foo');
  // entity.siblings = [] due to race condition
  entity.siblings.push('bar');
  // entity.siblings = ['bar']
  db.put('foo', entity);
  // one of these puts overwrote the other...
}.start();

not synchronized ?

nah, i was just gisting something for a friend about atomicity of writes.