Mentioning the words “migration” or “database refactoring” to a typical DBA is unlikely to help you make new friends. Most organizations are extremely averse to changing their data infrastructure, which is often assumed to be a long, arduous and expensive process. Well, It doesn’t have to be this way, since with the right tools you can build a scalable big data infrastructure on AWS in just a week or two; still, change is always scary.
In this post we will provide a step-by-step implementation of an application that auto-completes Twitter hashtags, based on the most popular hashtags seen in the last 7 days. For example, when a user will write the text ‘trum’ in the auto-complete application, the application will probably suggest Trump related hashtags, since that’s a trending topic these days.