Sites may be in read-only mode on Wednesday, March 1st 8:00 PM EST / Thursday, March 2nd 1:00 AM UTC for up to 90 minutes.


The Platform Engineering team at Stack Overflow is planning to perform SQL Server failovers to facilitate required maintenance. We plan to perform this maintenance in a much less disruptive fashion than previous maintenance sessions. However we may require the sites to be in read-only mode for up to 90 minutes.

The Details:

We need to perform software patching in order to keep our systems up to date and secure. Some of this work will require our servers to be failed over and rebooted. Since the last maintenance period we have completed work which we believe will enable us to perform these actions in a less obtrusive fashion than in previous maintenance windows. This is the first major maintenance since that work was completed–our plan will be to avoid a network-wide read-only window, but we are including a contingency plan should we encounter unexpected problems to fall back to the previous methodology, which would require the network to be placed into read only mode for up to 90 minutes.

Questions or concerns?

Please post a comment or answer below; We'll do our best to address any concerns between now and the maintenance window.

  • 1
    Thanks for the information, but it would be great if you can have a consistent notice period ;) Commented Feb 28, 2023 at 19:53
  • 10
    We'd planned to have this up yesterday @RandomPerson but there were some crossed wires in the internal communication. :D
    – Catija
    Commented Feb 28, 2023 at 21:03
  • 11
    @RandomPerson Also, they could just do it and not tell us. I think they have SLAs (and "best effort" notifications) around a free, public web site merely as a courtesy. :-) Commented Feb 28, 2023 at 22:57
  • 1
    It seems that only some sites (e.g., The Workplace; screenshot) are read-only while others aren't (e.g., MSE, Stack Overflow, The Workplace Meta). Is this a bug? Possibly related to / a regression of this one?
    – 41686d6564
    Commented Mar 2, 2023 at 1:49
  • 4
    @41686d6564standsw.Palestine That's just normal behavior for this maintenance window.
    – AMtwo
    Commented Mar 2, 2023 at 2:29
  • Didn't notice any read-only time over on Aviation, so that's nice.
    – Vikki
    Commented Mar 2, 2023 at 7:18
  • 2
    It would be great if you used a proper 24h format.
    – o_O
    Commented Mar 2, 2023 at 14:59
  • As far as I can tell we're not in the maintenance window, but the site seems to be unresponsive. "Stack Overflow is currently offline for maintenance" :-\ This is becoming a common occurrence in the middle of the day. Quite frustrating! Commented Mar 2, 2023 at 14:59
  • 2
    @EatenbyaGrue just had it in my GMail yesterday, for 10 minutes. There's not a single site or service in the world with 100% uptime. Commented Mar 2, 2023 at 15:45


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