A git repository is a content-addressable object store where objects go in indexed by the SHA1 of their content, plus a set of named references pointing at specific objects by hash. The on-disk format (loose objects as individual files, packfiles as delta-compressed archives with a separate index, a ref store split between a directory of files and a packed-refs flat file with a locking protocol that breaks on NFS) is an implementation detail. The protocol for synchronising objects and refs between repositories is what actually matters, and since git-the-program is just one implementation of it, you can swap the storage backend without clients noticing.
In my experience, if you want to make your stuff more reliable, you’ll trend toward expecting more and more errors. Lots can go wrong on a normal day! For example, my team recently had to deal with a memory allocation error, even though we’re writing a Node.js app.
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（图源：长春高新 2021 年年度报告）
interpreted vs. compiled
Are you cut out for living and working in Antarctica?