A senior-engineer walkthrough of Log-Structured Merge Trees: MemTable + WAL durability, SSTable layout with sparse index and bloom filters, the L0→Ln level hierarchy, leveled vs tiered vs FIFO compaction, the three…
The bell curve taught you the average is a fair summary and outliers are rare. In software both halves are false: latencies, key popularity, file sizes and follower counts are heavy-tailed power laws where the outliers…