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Data Systems⚪New

🧩 SSTables (LSM-Trees)

Sorted String Tables. Immutable on-disk files where keys are sorted, merged in the background.

⬇️ Foundation

🎯 Mastery Criteria

✔Student can explain why immutability necessitates compaction/merging.
🤔 Reflection:
"How does the 'Librarian' (LSM-Tree) use SSTables to organize the 'Pile of Books' (The Log)?"

⚠️ Common Trap

You can modify an SSTable in place.