Databases use buffer pools, column caches, and result caches to keep hot data in RAM. Here is how each caching strategy works and what happens when data.
Here is exactly how an engine writes to an Iceberg table, step by step, from data files through the atomic commit that makes ACID guarantees possible.
The Volcano model processes one row at a time. Vectorized execution processes batches with SIMD. Code generation fuses operators into compiled code.
Iceberg's hidden partitioning separates physical layout from user queries using transform functions.
