Internals for Interns

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독서·학습 A weekly blog that explains software internals in approachable deep dives, covering compilers, databases, filesystems, and language runtimes.

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Editor's Review

For reference only

Each post anchors an abstract mechanism to a concrete example, such as tracing a hello world program through compiler phases, which makes dense material easier to follow than reference documentation. The weekly cadence and broad topic range reward curious readers, though the deliberately non-exhaust

Site introduction

Internals for Interns is a personal blog devoted to explaining how software works beneath the surface. Rather than acting as a reference manual, it offers readable deep dives into the machinery behind everyday development tools, from programming language runtimes to storage systems.

The content spans compiler phases such as lexing, parsing, and SSA, Python’s object model and garbage collection, database query execution, filesystem structures, and runtime behaviors like memory allocation and goroutines. Posts typically begin with a small concrete program and trace what happens internally step by step.

It is aimed at students, interns, and working engineers who want intuition about the systems they depend on. Readers preparing for systems interviews or trying to connect theory with practice will find the example-driven format especially useful.

New articles appear weekly, so following along or browsing the archive by topic works well. Treat each post as an entry point, then consult official documentation or source code when you need exhaustive detail. Overall, it is a friendly starting point for anyone curious about the engineering behind their tools.