# \#post-mortem
**URL:** https://community.crossref.org/tag/post-mortem/137.md
[Latest](https://community.crossref.org/latest.md) · [Categories](https://community.crossref.org/categories.md) · [Tags](https://community.crossref.org/tags.md)
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## [Outage of March 24, 2022 - Crossref](https://community.crossref.org/t/outage-of-march-24-2022-crossref/2571)
**Author:** [@Crossref](https://community.crossref.org/u/Crossref)\
**Replies:** 0\
**Last updated:** [24 March 2022 22:11 UTC](https://community.crossref.org/t/outage-of-march-24-2022-crossref/2571 "2022-03-24T22:11:27Z")
So here I am, apologizing again. Have I mentioned that I hate computers? We had another large outage today. It lasted 17 hours. Again it was related to the data center we are trying to leave. However, at least this time,…
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## [Outage of October 6, 2021 - Crossref](https://community.crossref.org/t/outage-of-october-6-2021-crossref/2130)
**Author:** [@Crossref](https://community.crossref.org/u/Crossref)\
**Replies:** 0\
**Last updated:** [6 October 2021 19:23 UTC](https://community.crossref.org/t/outage-of-october-6-2021-crossref/2130 "2021-10-06T19:23:01Z")
On October 6 at ~14:00 UTC, our data centre outside of Boston, MA went down. This affected most of our network services- even ones not hosted in the data centre. The problem was that both of our primary and backup networ…
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## [Update on the outage of October 6, 2021 - Crossref](https://community.crossref.org/t/update-on-the-outage-of-october-6-2021-crossref/2184)
**Author:** [@Crossref](https://community.crossref.org/u/Crossref)\
**Replies:** 0\
**Last updated:** [27 October 2021 14:27 UTC](https://community.crossref.org/t/update-on-the-outage-of-october-6-2021-crossref/2184 "2021-10-27T14:27:24Z")
In my blog post on October 6th, I promised an update on what caused the outage and what we are doing to avoid it happening again. This is that update. This is a companion discussion topic for the original entry at http…
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## [Lesson learned, the hard way: Let’s not do that again! - Crossref](https://community.crossref.org/t/lesson-learned-the-hard-way-let-s-not-do-that-again-crossref/2074)
**Author:** [@Crossref](https://community.crossref.org/u/Crossref)\
**Replies:** 0\
**Last updated:** [8 September 2021 17:00 UTC](https://community.crossref.org/t/lesson-learned-the-hard-way-let-s-not-do-that-again-crossref/2074 "2021-09-08T17:00:20Z")
We missed an error that led to resource resolution URLs of some 500,000+ records to be incorrectly updated. We have reverted the incorrect resolution URLs affected by this problem. And, we’re putting in place checks and …