From Code to Cloud: My Learnings in Java, Spring Boot, and Beyond

This guide provides a comprehensive list of Unix/Linux commands, categorized by their functions. These commands cover file management, process management, file permissions, searching, system information, compression, networking, and shortcuts. Additionally, examples and usage scenarios are included to help you understand how to use these commands effectively. File Commands ls: Directory listing. ls -al: Formatted listing with hidden files. ls -lt: Sorting the formatted listing by time modification. cd dir: Change directory to dir. cd: Change to home directory. pwd: Show current working directory. cat >file: Places the standard input into the file. more file: Output the contents of the file. head file: Output the first 10 lines of the file. tail file: Output the last 10 lines of the file. tail -f file: Output the contents of the file as it grows, starting with the last 10 lines. touch file: Create or update the file. rm file: Delete the file. rm -r dir: Delete the directory. rm -f f...

Hibernate is a widely used ORM (Object-Relational Mapping) tool. Below is an important list of Hibernate interview questions and answers updated for the latest versions. 1) What is Hibernate? Hibernate is an open-source, lightweight ORM framework for Java that simplifies the storage, retrieval, and manipulation of data in a relational database using object-oriented concepts. 2) Explain Hibernate architecture? Hibernate architecture consists of core components like: Configuration: Loads configuration and mappings. ServiceRegistry: Holds services Hibernate needs at runtime. SessionFactory: Thread-safe factory for Sessions, created once per application. Session: Interface for CRUD operations and query execution, non-thread-safe. Transaction: API for transaction management. Query/Criteria: For querying the database. 3) What is ORM? ORM stands for Object-Relational Mapping — a programming approach to map objects in code to relational database tables, allowing developers to work with objects...

1) What is Spring Framework (Spring 6)? Spring Framework is a comprehensive programming and configuration model for Java-based enterprise applications. As of Spring 6 , it supports: Java 17+ as a baseline Jakarta EE 9 (e.g., jakarta.servlet instead of javax.servlet ) Native support for GraalVM and AOT (Ahead-of-Time) compilation Enhanced observability and performance 2) What are the advantages of Spring Framework 6? Loose Coupling & Dependency Injection (DI) Predefined Templates (JdbcTemplate, RestTemplate, etc.) Faster Development Declarative Programming (with annotations) Lightweight & Modular Native Compilation Support (via GraalVM) Better Observability (Micrometer support) Improved Testing Support 3) What are the modules in Spring 6? Core Container : Beans, Core, Context, SpEL Data Access/Integration : JDBC, ORM, Transactions, JMS Web : Spring MVC, WebFlux (reactive) AOP, Aspects and Instrumentation Test :...