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All posts by Young Xu

How Netflix Tracks IP Addresses within AWS

Posted by on October 3rd, 2017
October 16th, 2017

Donavan Fritz, Sr. Network Site Reliability Engineer at Netflix, discusses how his team is building a system to manage and quickly identify IP addresses in AWS. During his talk, Donavan described how his team tracks IP addresses within the AWS cloud — specifically, how they built a system to quickly figure out where a given IP address is allocated at a given time. … Read More »

Automatic User Provisioning with SCIM

Posted by on August 14th, 2017
August 14th, 2017

If you’ve ever had to manually set up or delete accounts for every new or departing employee, you’ll understand the value of automatic provisioning. Today we’re excited to announce our new SCIM integration, which supports SCIM versions 2.0 and 1.1 and has been certified for two major identity providers, Okta and OneLogin.… Read More »

How PayPal Benchmarks Their Service Providers for Application Delivery

Posted by on August 7th, 2017
August 7th, 2017

In this update from ThousandEyes Connect Santa Clara, we’ll summarize the presentation by Viet Nguyen, Senior Manager of Problem and Change Management and formerly Senior Manager of Network Engineering/Security/Operations at PayPal. During his talk, Viet described how his team keeps their many service providers accountable by collecting and sharing objective data. He also discussed how he and his team operationalizes the use of ThousandEyes within PayPal. … Read More »

What Happened When Marketo’s Domain Name Expired?

Posted by on July 26th, 2017
August 1st, 2017

On Tuesday, July 25th, 2017 at 4:25am Pacific, all services related to Marketo’s domain “marketo.com” began experiencing an outage. The outage continues to have impacts at the time of writing. Marketo is a marketing automation software widely used by companies around the world—when Marketo went down on Tuesday, forms on many companies’ websites broke completely. Many users were unable to access the Marketo platform or even email Marketo employees, since Marketo mail servers were also inaccessible.… Read More »

2017 Update: Comparing Root Server Performance Globally

Posted by on June 26th, 2017
June 26th, 2017

Back in February 2015, guest blogger Mehmet Akcin conducted a study comparing availability and latency across all of the DNS root servers, measured from hundreds of vantage points around the world. Now that two years have passed, we’ve decided to refresh the data presented in Mehmet’s post and present an update on how the global performance of the root servers has changed.… Read More »

2017 Update: Comparing the Performance of Popular Public DNS Providers

Posted by on May 15th, 2017
May 25th, 2017

In 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 27th, 2017
June 6th, 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 14th, 2017
March 27th, 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 28th, 2017
March 3rd, 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 22nd, 2017
March 14th, 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 »