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All posts by Young Xu

2017 Update: Comparing the Performance of Popular Public DNS Providers

Posted by on May 15, 2017

n May 2015, guest blogger Mehmet Akcin wrote about his findings from measuring and comparing latency to a number of popular public DNS services from hundreds of vantage points located across the globe. But two years have passed since then, and the landscape of public DNS continues to change as sites are added and services are optimized.… Read More »

Monitoring DNS in China

Posted by on March 27, 2017

In our previous post, Monitoring Application Delivery in China, we discussed a myriad of issues that can affect the performance of applications delivered to users in China. Of these issues, difficulties with DNS in China is a topic that deserves its own post — when the packets of a critical service like DNS routinely go missing, the impacts on the delivery of important applications can be enormous.… Read More »

Monitoring Application Delivery in China

Posted by on March 14, 2017

As we discussed in our first post about benchmarking network performance in China, half of the battle of monitoring applications in China is setting new expectations for what performance should normally look like; often metrics like packet loss and latency will be significantly higher than outside the Great Firewall.… Read More »

AWS S3 Outage Likely Caused by Internal Network Issue

Posted by on February 28, 2017

On Tuesday, February 28th, 2017, the US-East-1 region of Amazon Web Services S3 saw a complete outage from 9:40am to 12:36pm PST. AWS S3 (Simple Storage Service) is a cloud object storage solution that many services rely on to store and retrieve files from anywhere on the web. In addition, many other AWS services that depend on S3 – Elastic Load Balancers, Redshift data warehouse, Relational Database Service and others – also had limited to no functionality. … Read More »

Benchmarking Network Performance in China

Posted by on February 22, 2017

As businesses expand their operations to rapidly developing new markets like China, we are excited to announce that we too are expanding our horizons at ThousandEyes. We have increased our set of monitoring points to include nine new Cloud Agent locations in China: Foshan, Jinan, Nanjing, Shenyang, Shijiazhuang, Wenzhou, Wuxi, Xi’an and Zhuhai.… Read More »

Best Practices to Combat Route Leaks and Hijacks

Posted by on January 26, 2017

In past blogs, we’ve explored how you can alert for and diagnose BGP route leaks and hijacks. Route leaks and hijacks—routing events where illegitimate prefixes are wrongly propagated through the Internet—are notoriously difficult to troubleshoot and have the potential to bring down entire swaths of the Internet.… Read More »

What Does Collective Intelligence Mean for Network Ops?

Posted by on January 4, 2017

Over the past year, we’ve witnessed the development of a new and important movement in the networking community: Collective Intelligence. While the meaning of Collective Intelligence has evolved, its emergence indicates an increasingly apparent need for useful data collected from a variety of vantage points, that is efficiently analyzed to produce actionable insights.… Read More »

Running Low Latency on Hi-Rez’s Online Gaming Network

Posted by on December 21, 2016

In this post from ThousandEyes Connect New York, we’ll summarize the presentation by Nabil Ismail, VP of Operations & Technology at Hi-Rez Studios. During his talk, Nabil described his team’s formidable task of ensuring that they continually provide a smooth, fast online experience to their 15+ million gamers across the globe.… Read More »

Optimizing WAN to Deliver SharePoint Online Globally

Posted by on December 16, 2016

In this post from ThousandEyes Connect New York, we’ll summarize the talk by Scot Clark, Enterprise Infrastructure Solutions Manager at a Forbes Top 150 multinational consumer goods company. During his talk, Scot described how his company’s WAN has evolved, as well as the business’ continuing migration to the cloud.… Read More »

NANOG 68: Decoding Performance Data from Large-Scale Internet Outages

Posted by on November 7, 2016

At NANOG 68 in Dallas, TX on October 18, 2016, ThousandEyes CEO Mohit Lad presented on recent outages that had large-scale effects on Internet infrastructure and availability. During his talk, Mohit discussed three recent, impactful events: the June 2016 DNS root server DDoS, the May 2016 Sea-Me-We-4 cable cut and the April 2016 AWS route leak. … Read More »