Is Gmail down for you too?

I am getting a 502 server error when trying to get to Gmail. IS it also down for you? The cloud is not cooperating right now :-(


The Apps Status Dashboard has a status of Service Outage

We're aware of a problem with Google Mail affecting a majority of users. The affected users are unable to access Google Mail. We will provide an update by September 1, 2009 4:53:00 PM UTC-4 detailing when we expect to resolve the problem. Please note that this resolution time is an estimate and may change.

Oh well, I am adding that Beta label back to gmail the moment it comes back up :-)

I will use smoke signals instead...now those are real clouds ;-)

Google released an apology detailing what happened

Here’s what happened: This morning (Pacific Time) we took a small fraction of Gmail’s servers offline to perform routine upgrades. This isn’t in itself a problem — we do this all the time, and Gmail’s web interface runs in many locations and just sends traffic to other locations when one is offline.

However, as we now know, we had slightly underestimated the load which some recent changes (ironically, some designed to improve service availability) placed on the request routers — servers which direct web queries to the appropriate Gmail server for response. At about 12:30 pm Pacific a few of the request routers became overloaded and in effect told the rest of the system “stop sending us traffic, we’re too slow!”. This transferred the load onto the remaining request routers, causing a few more of them to also become overloaded, and within minutes nearly all of the request routers were overloaded. As a result, people couldn’t access Gmail via the web interface because their requests couldn’t be routed to a Gmail server. IMAP/POP access and mail processing continued to work normally because these requests don’t use the same routers.

The Gmail engineering team was alerted to the failures within seconds (we take monitoring very seriously). After establishing that the core problem was insufficient available capacity, the team brought a LOT of additional request routers online (flexible capacity is one of the advantages of Google’s architecture), distributed the traffic across the request routers, and the Gmail web interface came back online.