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High Availability (HA)

Google Compute Engine Live Migration Passes the Test

Posted by Brian Adler   Ι   December 12, 2013 0 comments
Last week Google announced the general availability of its Google Compute Engine cloud service, including new live migration technology that enables your virtual machines to keep running while Google performs upgrades to its physical infrastructure. We put the live migration feature to the test with not-surprising results.Read more

Can Your IT Infrastructure Handle the Holiday Marketing Campaign Rush?

Posted by Andre Theus   Ι   September 17, 2013 0 comments
If your organization has a seasonal spike in business around the end of the year, you're likely to find demand for compute resources spiking, too. If your profitability depends on seasonal revenue, you'll need to architect scalable applications with an underlying infrastructure that can adapt to dynamically changing conditions.Read more

20 Ways to Fine-Tune Your Cloud Environment

Posted by Brian Adler   Ι   August 14, 2013 0 comments
A regular tune-up can help any enterprise improve its cloud operations and potentially save money. Here are 20 simple tips that can help you save money, improve server utilization, improve cloud security and availability, and otherwise optimize your cloud infrastructure.Read more

HA/DR and Fault Tolerance with AWS and RightScale

In a session at RightScale Compute last month, Amazon Web Services Solutions Architect Miles Ward talked about architecting in high availability and fault tolerance using AWS and RightScale. He noted that fault tolerance can result from faults in facilities, hardware, networking, code, and people, and defined fault tolerance as the ability of a system to continue operating properly, though...Read more

Don't Leave Your Apps Stranded

Posted by Ryan Geyer   Ι   May 06, 2013 0 comments
If you travel enough, it's only a matter of time. You're facing a tight connection and when your first leg gets delayed it only gets tighter. Then you're sprinting to your connecting gate, only to watch as they close the doors and push back from the gate without you. On my way back from OpenStack Summit 2013 in Portland, where I spoke on Techniques for Managing your OpenStack Cloud , I had this...Read more

AWS Outage Lessons Learned: If Netflix Can Suffer, So Can You

Posted by Brian Adler   Ι   January 04, 2013 11 comments
On Christmas Eve and continuing into Christmas Day, AWS had a “Service Event” centered on the ELB (Elastic Load Balancing) service in the US-East region. Although only a small percentage of ELBs were functionally disabled and unable to route traffic to their backend servers, all ELBs in the region experienced a time interval in which they could not scale, nor could changes be made to their...Read more

Cloud Architecture 2013: Top 9 Fine-Tuning Tips

Posted by Brian Adler   Ι   December 18, 2012 3 comments
Before you congratulate yourself on crossing off those final to-dos for 2012, don’t forget this critical one: fine-tuning your applications and cloud architecture. And while it’s unlikely that you’ll accomplish this task by end of year, here are nine tips to help you optimally manage your cloud applications and architecture in 2013.Read more

Architecting Scalable Applications in the Cloud: Database Tier

Posted by Brian Adler   Ι   October 31, 2012 3 comments
This week brings me to the fourth and final post in my series on Architecting Scalable Applications in the Cloud , where previously I’ve discussed techniques for hardening your application infrastructure at the load balancing, web/application, and caching tiers. In today’s post I will delve into the details of the most common bottleneck of a typical application – the database tier. The diagram...Read more

Architecting Scalable Applications in the Cloud: The Caching Tier

Posted by Brian Adler   Ι   October 24, 2012 0 comments
Last week I discussed the application tier and the implementation considerations that come into play with regard to promoting the availability and resiliency of that tier of your architecture. Here, in the third article in my series on Architecting Scalable Applications in the Cloud , I will cover a part of the architecture that is often forgotten when implementing an application – the caching...Read more

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