You are building a social media platform with millions of users, and your MongoDB database is experiencing slow queries and high memory usage. To solve
MongoDB is widely used in modern applications due to its scalability, flexibility, and performance. Below are 100 important MongoDB interview questions with detailed answers. 1.
MongoDB sharding distributes large datasets across multiple servers to ensure horizontal scaling and high availability. Below are the essential commands to set up, manage, and
Sharding in MongoDB is a horizontal scaling technique that distributes large datasets across multiple servers (shards). It helps improve performance, availability, and scalability when a
The @CrossOrigin annotation in Spring Boot is used to enable Cross-Origin Resource Sharing (CORS) for RESTful web services. CORS is a security mechanism that allows
The @ComponentScan annotation in Spring Boot is used to automatically detect and register beans (components, services, repositories, etc.) from the specified package(s) into the Spring
In the context of Java switch expressions, both yield and return relate to producing a value, but they serve distinct purposes and behave differently within
Java 17, which is a Long-Term Support (LTS) release, switch expressions are fully mature and widely adopted. They offer a more concise, expressive, and less
Java 8, Java 11, and Java 17 are the most widely used LTS (Long-Term Support) versions of Java. Below is a detailed comparison of these
Both methods belong to the Optional<T> class and are used to handle optional values in Java. ifPresent() (Java 8) Example: Using ifPresent() Output: If the