기억을 지배하는 기록

원문: http://blog.dynatrace.com/2011/04/12/the-cost-of-an-exception/ The Cost of an Exception 최근에 “Exception” 비용에 대한 큰 논의가 dynatrace에서 있었다고 합니다. 대부분의 고객이 Exception이 Application Performance에 미치는 영향에 대해서 고려하지 않는다고 한다. Exception 비용을 측정할 수 있는 간략한 Code를 ..

The impact of Garbage Collection on Java performance원문:http://blog.dynatrace.com/2011/03/24/the-impact-of-garbage-collection-on-java-performance/ Major GC가 성능면에서 부정적인 영향을 주는 것은 명백 하지만 우리가 주의해야 할 것이 Major GC 만은 아닙니다. 그리고 우리가 항상 Major GC와 Minor GC을 구분할 수 있는 것도 아..

Introduction to servlet 3.0 new features The servlet 3.0 specification has come up with many new and exciting features. This article explains the major changes since the previous specification. Web framework pluggability Servlet API is the building block of the Java web applications. Almost all the java web application frameworks build on top of the Servlet API. Examples are Sp..

JDK 7 Version Plan Project Coin (JSR TBD) InvokeDynamic (JSR 292) Fork/Join Framework Mid 2011 Strict Verification Parallel Class Loaders Transfer Queues Phasers Unicode 6.0 Swing Nimbus XRender Pipeline ECC Swing J Layer More New I/O (J SR 203) JDBC 4.1 TLS 1.2 Enhanced Locales SDP & SCTP JDK 8 Version Plan Project Jigsaw Project Lambda Late 2012 Type Annotations (JSR 308) Bul..

Inspecting HotSpot JVM OptionsIntroductionA method for inspecting the comprehensive set of HotSpot JVM options and some examples comparing different outputs.BackgroundThe Oracle JVM provides an enormous spectrum of options to control the runtime JVM. These options are given a criminally short and non-comprehensive discussion at the OTN here. OTN divides these options into three..

This series of articles introduces Contexts and Dependency Injection for Java EE (CDI), a key part of the Java EE 6 platform. Standardized via JSR 299, CDI is the de-facto API for comprehensive next-generation type-safe dependency injection as well as robust context management for Java EE. Led by Gavin King, JSR 299 aims to synthesize the best-of-breed features from solutions l..

This series of articles introduces Contexts and Dependency Injection for Java EE (CDI), a key part of the soon to be finalized Java EE 6 platform. Standardized via JSR 299, CDI is the de-facto API for comprehensive next-generation type-safe dependency injection for Java EE. Led by Gavin King, JSR 299 aims to synthesize the best-of-breed dependency injection features from soluti..

sscache : SHOP.COM Cache System "SHOP.COM"이라는 영국 쇼핑몰 사이트에서 사용중인 Object Cache API을 Open Source로 제공하고 있습니다. 최신 버전은 0.3 버전은 2008년 12월 19일 쯤에 등록이 되었습니다. 간략한 테스트를 해보고 느낀 점을 정리 해봤습니다. 순수 Java 개발 CacheServer을 실행하고 Client가 TCP/IP..