Philippe Marschall 91e39d558f Use ArrayList instead of LinkedList for known size ...

Spring JDBC unlike other modules uses LinkedList instead of ArrayList
in several places. There is a large body of evidence suggesting that on
contemporary hardware ArrayList is both faster and has less overhead
than even in degenerate cases of empty lists [3] or unknown size.

There are two places in Spring JDBC where the size of the list is known
in advance and an ArrayList of the correct final size can be created

 [1] https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8011200
 [2] http://cliffc.org/blog/2017/11/05/modern-hardware-performance-cache-lines/
 [3] https://bugs.openjdk.java.net/browse/JDK-8011200

Issue: SPR-16378

2018-01-14 17:45:32 +01:00

..

src

Use ArrayList instead of LinkedList for known size

2018-01-14 17:45:32 +01:00

spring-jdbc.gradle

Upgrade to Derby 10.14.1.0

2017-10-26 21:26:31 +02:00