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…
Blog
Tech Insights & Engineering Notes
AI systems, platform engineering and architecture. Lessons from 13+ years of building at scale.
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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…
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Servant Leadership for Engineering Managers: Leading Without Commanding
Learn servant leadership for engineering managers: what Greenleaf's model means for tech leads, how to remove impediments, and…
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Mockito: Mocking, Stubbing, and Verifying
Executive Summary: Mockito lets you replace a class’s dependencies with mocks, stub their responses, and verify the calls…
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JUnit 5: Writing Your First Tests
Executive Summary: A JUnit 5 test is a method annotated @Test that passes when its assertions hold. I…
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How to Lead Engineers Without Authority
Learn to lead engineers without authority using French and Raven's power bases, expert and referent power, and a…
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How to Run Engineering Status Meetings That Don’t Waste Time
Learn how to run engineering status meetings: push status in writing, keep standups for blockers, and spend meeting…
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10 React Hooks You Must Know in 2025
Ten React hooks that still matter in 2025, with when to use each and how they change component…
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Code Optimization in Java: Minimize Latency with Profiling
Java latency playbook: allocation and I/O techniques, pooling, async-profiler and JMH guidance, with before/after discipline.
