Hutool 3.9 Upd

| Operation | Hutool 3.8 | Hutool 3.9 UPD | Improvement | | :--- | :--- | :--- | :--- | | | 450 ns | 210 ns | 2.1x faster | | BigInteger sqrt | Not present | 58 ns (via NumberUtil.sqrt ) | N/A | | File copy (NIO) | 12 MB/s | 47 MB/s (using transferTo) | 3.9x faster |

For the next 72 hours, Xiaohong lived on instant noodles and green tea. The problem was in ReUtil.replaceAll . A static Pattern object, intended for speed, was holding onto a Matcher state that wasn't thread-safe. Hutool 3.9 UPD

The announcement went live at 3:00 AM on a Tuesday. | Operation | Hutool 3

tools were updated to provide better support for multi-environment configurations and automatic type conversion when reading configuration values. Technical Breakdown Key Feature IdcardUtil The announcement went live at 3:00 AM on a Tuesday

: More robust handling of SSL certificates for their outgoing API calls. JSONUtil Improvements

Version 3.0.9 was a bridge release that solidified Hutool's reputation for "low-level encapsulation."