Back-end

Properly used, an SQL database index can be so effective that it might seem like magic. But the following series of exercises will show that underneath, the logic of most SQL indexes---and wielding them correctly---is quite straightforward.

Customer Relationship Management systems provide businesses with more clarity and information about customer behavior, helping boost sales, retain existing customers, and attract new ones. In this article, Toptal Software Developer Leif Gensert outlines the basic challenges of CRM integration and explains what you can do to make the process as efficient and frictionless as possible.

Feedback on an enterprise web app prompted an experiment. Could a WhatsApp chatbot replace it? Would people like it better? Would it be more useful?

Missing the luxury of a good, old-fashioned remote control when the laptop is beyond easy reach? Transform your old smartphone into a remote and learn some basic Node.js/Express/Pug along the way.

Pre-trained models are making waves in the deep learning world. Using massive pre-training datasets, these NLP models bring previously unheard-of feats of AI within the reach of app developers.

For those working with AI, the future is certainly exciting. At the same time, there is a general sense that AI suffers from one pesky flaw: AI in its current state can be unpredictably unreliable.

Can Golang be object-oriented? Go is post-OOP but can still leverage concepts like binding functions to types (aka classes), constructors, subtyping, polymorphism, dependency injection, and testing with mocks.

One of the new possibilities offered by [email protected] is the ability to implement server-side A/B testing using Lambdas on CloudFront’s edge servers. In this article, Toptal Full-stack Developer Georgios Boutsioukis guides you through the process and outlines the pros and cons of A/B testing with [email protected]