Installing .NET SDK and Setting Up Your First Project
Learn how to install .NET SDK on Windows, macOS, or Linux, verify it with dotnet --info, then build…
Category
Backend Development
Backend development is the server-side work behind an application: APIs, business logic, databases, queues and background jobs. Backend engineers pick languages such as Java, Python, Node.js or C#, decide how data is stored and how services talk to each other, and keep it all fast and correct under load. Most of the hard calls are trade-offs, such as SQL against NoSQL or a monolith against microservices.
177 articles
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Testing Spring Boot Applications
Executive Summary: Most Spring Boot testing is plain JUnit 5 and Mockito: build the service directly and mock…
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Spring Security Basics
Executive Summary: Spring Security basics rest on two questions: authentication checks who is calling, and authorization decides what…
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Validation and Exception Handling in Spring Boot
Executive Summary: Bean Validation lets you put constraints like @NotNull, @Size, and @Email on fields and check them…
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HTTP, REST, and JSON in Java
Executive Summary: Java’s built-in HttpClient handles HTTP calls, and Jackson’s ObjectMapper turns JSON into records and back. I…
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Repository Pattern in Plain Java
Executive Summary: The repository pattern puts data access behind a domain-named interface, with an in-memory implementation for fast…
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JPA and Hibernate Fundamentals
Executive Summary: JPA and Hibernate replace hand-written row mapping with mutable entities managed by an EntityManager. I cover…
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Building a CRUD App with JDBC
Executive Summary: This hands-on project builds a book catalog CRUD app with plain JDBC, H2, and a small…
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Connection Pools and Transactions in Java
Executive Summary: Production JDBC needs a connection pool and explicit transactions. I show how to configure HikariCP and…
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JDBC Fundamentals: Connections, Statements, and ResultSets
Executive Summary: JDBC is a standard interface over vendor drivers, built on Connection, PreparedStatement, and ResultSet. Here I…
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CI Basics for Java: GitHub Actions from Scratch
Executive Summary: A Java CI pipeline on GitHub Actions starts with one workflow file that checks out the…
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Debugging Java Applications: IDE, Remote, and Techniques
Executive Summary: Debugging Java follows one loop: reproduce, isolate, form one hypothesis, and verify it with evidence. Here…
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Logging in Java: SLF4J, Logback, and Best Practices
Executive Summary: Java logging works best with SLF4J as the facade and Logback as the engine, so levels…
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Writing Good Tests: Patterns, Fixtures, and Anti-Patterns
Executive Summary: Good tests follow the test pyramid: many fast unit tests, fewer integration tests, and a thin…
