I'm a tech lover and have 8 years experience in hybrid web technology, Recently I just finished one of the largest application for Hotel/Package/Tour/Transfer Booking Engine. it's connected with Android/iSO and web based on REST API. Here I used multiple technology for make it super-fast, Ex: NodeJS for process asynchronous request to get hotels data from different supplier. MongoDB for make quick respond to API, and save large dataset (Static Hotels Details)