We've surveyed 126 developers who attended AWS re:Invent 2014 to understand their database needs and existing deployments on cloud infrastructure solutions like Amazon Web Services (AWS). The survey found that the biggest challenge for these developers is performance, with scalability being a close second. Python is the most popular programming language among participants, followed by Java and Ruby. MySQL is also widely used, with over 70% of respondents relying on it. NoSQL databases are also in use, with MongoDB, Memcached, and Redis being the most popular ones. The main reason developers choose Redis is for its performance, with many citing speed as a key factor.