Su San Talks Tech

May 4, 2025 · Backend Development

How to Export Millions of Excel Rows in Seconds: High‑Performance Java Strategies

Learn how to overcome memory and speed bottlenecks when exporting massive datasets to Excel by using streaming APIs like SXSSFWorkbook and EasyExcel, optimizing database pagination, tuning JVM and connection pools, and applying asynchronous shard processing to achieve stable sub‑200 MB memory usage for millions of rows.