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Showing entries 1 to 5

Displaying posts with tag: outage (reset)

AirBNB didn’t have to fail
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Read the original article at AirBNB didn’t have to fail

Today part of Amazon Web Services failed, taking down with it a slew of startups that all run on Amazon’s Cloud infrastructure. AirBNB was one of the biggest, but also Heroku, Reddit, Minecraft, Flipboard & Coursera down with it. Its not the first time. What the heck …

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ANALYZE TABLE is replicated. RTFM.
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Sometimes, I make mistakes. It’s true. That can be difficult for us Systems Engineering-types to say, but I try to distance myself from my ego and embrace the mistakes because I often learn the most from them. ..Blah, blah, school of hard knocks, blah, blah…. Usually my mistakes aren’t big enough to cause any visible impact, but this one took the site out for 10 minutes during a period of peak traffic due to a confluence of events.

Doh!

Here is how it went down…

We have an issue where MySQL table statistics are occasionally getting out of whack, usually after a batch operation. This causes bad explain plans, which in turn cause …

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Today’s up-time requirements
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When asking about up-time requirements set down in SLAs (Service Level Agreements) with our clients’ clients, we’d hear anything ranging from hours to the familiar five nines, but these days also simply 100% and otherwise penalties apply. From my perspective, there’s not much difference between five nines and 100%, 99.999% uptime over a year amounts to a maximum of little over 5 minutes outage. In many cases, this includes scheduled outages!

So, we can just not have any outages, scheduled or otherwise. Emergency support is not going to help here, because however fast and good they are, you’re already in serious penalty time or well on your way to not having a …

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Blog outage
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Sorry for a short outage today – we were moving to a new server we had some problems because of software incompatibilities on the new box. Now all sites on this box should behave as usual


S3 suffers major outage
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“Funny how Amazon doesn't use S3 to store any assets for amazon.com”tweet by @gruber

Amazon's S3 suffered a major outage today knocking many websites offline. S3 outage started at approximately 12:00 PM EST and the last time I checked at 11:11PM EST, Smugmug, a popular photo hosting site that extensively uses S3, was still down.

- S3 down for more than 7 hours
- …




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Showing entries 1 to 5

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