How does SQL Server manage transactions concurrency by Isolation Levels, what are their anomalies, and how do they work?

Unfortunately, GraphQL Directives are underrated. They are among the most powerful features of GraphQL that enable you to enhance and extend your API

How does MongoDB GridFS work? When to use it over the ordinary file system? How to use it with Node.js? and What are its pros and cons?

Strategy, State, and Template design patterns are commonly used patterns and they are so close. Let's know the differences between them.