Twitter blames two-hour failure on dual data-center crashes

Two parallel, redundant servers failed at about the same time, the company says

A Twitter outage on Thursday that lasted as long as two hours for some users was caused by separate data centers failing at nearly the same time, the company said in an apologetic blog post.

Twitter went down between about 8:20 a.m. and 9 a.m. Pacific Time on Thursday and was back in action by about 10:25 a.m., wrote Mazen Rawashdeh, vice president of engineering. Though some users suspected an overload of Tweets related to the Olympic Games, which opens on Friday in London, that was not the cause of the outage.

Instead, two data centers that operate in parallel for redundancy both failed, in what Rawashdeh called an "infrastructural double whammy."

"What was noteworthy about today's outage was the coincidental failure of two parallel systems at nearly the same time," Rawashdeh wrote. "We are investing aggressively in our systems to avoid this situation in the future."

It was Twitter's second outage in about six weeks. On June 21, the microblogging service went down about 9 a.m. Pacific and started to come back just after 10 a.m., only to fail again before full recovery began after 11 a.m. The company blamed that outage on a cascading bug, a type of problem that spreads from one software element to others.

Stephen Lawson covers mobile, storage and networking technologies for The IDG News Service. Follow Stephen on Twitter at @sdlawsonmedia. Stephen's e-mail address is stephen_lawson@idg.com

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Stephen Lawson

IDG News Service
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?