I do remember Google Wave developers also mentioned crashes on this very site. Actually, according to them, it was one of the problem with Wave project. I canno

I do remember Google Wave developers also mentioned crashes on this very site. Actually, according to them, it was one of the problem with Wave project. I cannot provide an exact citation but it is quite easy to crosscheck. Another well-known story is when digg.com was switched to Cassandra. It keep crashing under load. To be clear, when one gives it two times the size of workload of RAM, running only one JVM process on a whole server and has no fluctuation either in data flows or connection rate (they call it tuning), well it works.