Home » Blog

Celingest’s top picks for summer reading

 |  Post a comment

For those of you fortunate enough to be on a well-earned vacation this August, we’ve rounded up 3 of our most popular posts from over the last few months for you to browse from the comfort of your sun lounger.


Summer is the perfect time to catch up on all those articles you’ve been meaning to read and never found the time. Here are our top picks from the blog to help you re-charge your AWS batteries and brush up on some of the more tricky issues we’ve covered so far in 2014. Enjoy!

» Read more: Celingest’s top picks for summer reading

An Introduction to AWS Zocalo

 |  Post a comment

AWS choose this year’s Summit in New York to announce the release of several new features and products. Among those presented was AWS Zocalo, Amazon’s new file storage and sharing service.

AWS Zocalo

Zocalo is another by-product of the constant evolution and development of the range of services offered by AWS. The new service allows us to store and share our documents, and represents a bold entry into into a market dominated up until now by giants Dropbox and GoogleDocs.

» Read more: An Introduction to AWS Zocalo

Spot Instances uncovered

 |  Post a comment

Recently we deconstructed the rocket science behind AWS Instance Reservation. Now it’s time to delve deeper into Spot Instances.

AWS Log analytics with Spot Instances

End-of-quarter data analysis, batch scientific calculation … These are tasks that require high machine utilization but only for short, specific periods of time. In the old, on-premise data center world, executing this type of task would require major expenditure on hardware that would then lie dormant the rest of the year.
And in the Cloud? Architecting for the cloud means architecting for cost efficiency. AWS Spot Instances are a great solution for performing periodic, workload-intense or interruption-tolerant tasks while keeping resource expenses in tow.

» Read more: Spot Instances uncovered

AWS Elastic Beanstalk: An introduction to Rolling Updates

 |  Post a comment

AWS Elastic Beanstalk incorporates a feature that allows configuration changes to be applied, in a staggered fashion, across all the instances in your environment. This feature is called Rolling Updates.

Possibly one of the greatest difficulties you’ve encountered up until now when working with Elastic Beanstalk environments is when the template defining an infrastructure needs to be updated or changed. With the new Rolling Updates feature, the limitations you may have come up against previously when modifying Elastic Beanstalk templates now disappear.
» Read more: AWS Elastic Beanstalk: An introduction to Rolling Updates

On-demand test environments

 |  Post a comment

Celingest has helped eDreams increase agility and efficiency across all QA processes by developing a made-to-measure tool for launching and managing multiple test environments, deployed on the AWS cloud platform.

About eDreams

eDreams is one of the largest e-commerce travel companies in Europe. Operating in over 30 countries, eDreams’ cutting-edge search and booking technology offers customers competitive prices on over 60,000 flight routes from more than 440 airlines, and over 250,000 hotels in 40,000 destinations worldwide. The site continues to grow, with plans to expand into new markets and investments into improving the current service in several countries.

The challenge

A successful, large-scale e-commerce application such as eDreams requires thorough, continuous testing and quality assurance procedures to optimise performance and boost conversion. eDdreams needed to further increase agility and efficiency across all QA processes but found their existing infrastructure severely limited in terms of test capacity. They envisaged a scenario in which any number of test environments could be spun up on-demand- even by non-technical team members- for trial and QA purposes during development. This would allow multiple tests to be run simultaneously and managed independently. » Read more: On-demand test environments