Steve Tran Blog https://nhuantranduc.dev/blog All about Data and Artifical Intelligence en-us tranducnhuan@hotmail.com (Steve Tran) tranducnhuan@hotmail.com (Steve Tran) Tue, 29 Sep 2026 00:00:00 GMT https://nhuantranduc.dev/blog/parquet-blockchain-compression Birth of Parquet: Shrinking a Day of Ethereum Logs by 5x https://nhuantranduc.dev/blog/parquet-blockchain-compression A short history of Parquet, then two experiments on one day of Ethereum logs: how bloom filters speed up lookups on a high-cardinality column, and how sorting and compression shrink a 1.2 GB file to 218 MB. Tue, 29 Sep 2026 00:00:00 GMT tranducnhuan@hotmail.com (Steve Tran) parquetdata-engineeringblockchainbig-dataoptimization