ModifyRowsInStore.js

// To iterate over all of my stores records (60 in total) and change one column this little snippet takes ~70m.

   store.each(function(record) {
        record.beginEdit(); // supress any updates to store
        record.set("status", 0);
        record.endEdit();
        return true; // false will abort iteration
   });

// When I iterate over only have of the records in my store, the above snippet takes about ~35ms.

    var i = 0;
    store.each(function(record) {
        record.beginEdit(); // supress any updates to store
        record.set("status", extensionStateMap[record.get("exten")] );
        record.endEdit();
        return (i++ < 30); // false will abort iteration
    });

// Is there a way to mark compact all changes made to the store and commit them at once?
// Something like this would be great:

   store.beginEdit();
   store.each(function(record) {
        record.set("status", 0);
        return true; // false will abort iteration
   });
   store.endEdit();

// Obviously these beginEdit() and endEdit() functions do not exists for a store.
// But I think you get the idea of what I'm trying to achieve here.

// The changes I make to the store only need to be updated in-memory.
// There's no need to commit them back to a server or so.

// Is there any way to make changing all records in a store faster?