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akuwano 2011/02/09
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akuwano 2010/09/08
java
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akuwano 2010/08/01
java

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programming
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akuwano 2009/11/29
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akuwano 2009/08/26
performance

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benchmark

java

linux

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akuwano 2009/07/17
mysql

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akuwano 2009/07/02
SDK

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mobile

java

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akuwano 2009/06/28
java

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akuwano 2009/06/28
java

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Webã‚·ã‚¹ãƒ†ãƒ ã®å®‰å®šå‹•ä½œã«ã¯ã€ãƒ¡ãƒ¢ãƒªä½¿ç”¨é‡ã®é©åˆ‡ãªè¦‹ç©ã‚‚ã‚ŠãŒä¸å¯æ¬ ã€‚ã ãŒJavaVMã§ãƒ¡ãƒ¢ãƒªãŒã©ã®ã‚ˆã†ã«ç®¡ç†ã•ã‚Œã‚‹ã‹ã‚’ç†è§£ã—ã¦ã„ã‚‹ã ã‚ã†ã‹ï¼Ÿã€€ãƒ¡ãƒ¢ãƒªã«é–¢ã™ã‚‹å•é¡ŒãŒç™ºç”Ÿã™ã‚‹ã¨ã€çŸ¥è˜ã‚„æŠ€è¡“è³‡æ–™ã®ä¸è¶³ã«ã‚ˆã£ã¦å•é¡ŒãŒé•·æœŸåŒ–ã—ãŒã¡ã€‚JavaVMã§ã©ã®ã‚ˆã†ã«ãƒ¡ãƒ¢ãƒªãŒç®¡ç†ã•ã‚Œã¦ã„ã‚‹ã‹ã‚’ç†è§£ã—ã€æ£ç¢ºãªãƒ¡ãƒ¢ãƒªã‚µã‚¤ã‚¸ãƒ³ã‚°ã‚„ãƒ¡ãƒ¢ãƒªé–¢ä¿‚ã®ãƒˆãƒ©ãƒ–ãƒ«ã®æ—©æœŸè§£æ±ºã¸ã¨ã¤ãªã’ã‚ˆã†ã€‚ JavaVMã®ãƒ¡ãƒ¢ãƒªæ§‹é€ ã‚’ç†è§£ã—ã‚ˆã† ã¾ãšã€JavaVMãŒã©ã®ã‚ˆã†ã«ãƒ¡ãƒ¢ãƒªã‚’ä½¿ã£ã¦ã„ã‚‹ã‹ã‚’ç†è§£ã—ã¦ãŠã“ã†ã€‚JavaVMãŒãƒ—ãƒã‚°ãƒ©ãƒ ã‚’å®Ÿè¡Œã™ã‚‹ã¨ã€Javaã®ãƒ—ãƒã‚»ã‚¹ã«ã‚ˆã£ã¦ãƒ¡ãƒ¢ãƒªãŒä½¿ç”¨ã•ã‚Œã‚‹ã€‚Javaã®ãƒ—ãƒã‚»ã‚¹ã§ã¯ã€Javaãƒ’ãƒ¼ãƒ—ã€Permãƒ’ãƒ¼ãƒ—ã€Cãƒ’ãƒ¼ãƒ—ã€ãŠã‚ˆã³ã‚¹ãƒ¬ãƒƒãƒ‰ã‚¹ã‚¿ãƒƒã‚¯ã¨ã„ã†4ã¤ã®ãƒ¡ãƒ¢ãƒªé ˜åŸŸã‚’ä½¿ç”¨ã™ã‚‹ã€‚ Javaãƒ’ãƒ¼ãƒ—ã¯ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãƒ—ãƒã‚°ãƒ©ãƒ ã®å„ç¨®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’æ ¼ç´ã™ã‚‹é ˜åŸŸã§ã‚ã‚Šã€Classã®newã§ç¢ºä¿ã•ã‚Œã‚‹ã€‚Javaãƒ’ãƒ¼ãƒ—ã¯Ne
akuwano 2009/06/03
java

GC

programming
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IBM Developer
IBM Developer is your one-stop location for getting hands-on training and learning in-demand skills on relevant techno logies such as generative AI, data science, AI, and open source.
akuwano 2009/05/29
programming

java

GC
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google-guice - Google Code
Put simply, Guice alleviates the need for factories and the use of new in your Java code. Think of Guice's @Inject as the new new. You will still need to write factories in some cases, but your code will not depend directly on them. Your code will be easier to change, unit test and reuse in other contexts. Guice embraces Java's type safe nature. You might think of Guice as filling in missing featu
akuwano 2009/05/21
java

google

guice
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Build, Secure & Extend your Enterprise Applications | Rogue Wave
New Releases Zend Server 2018 improves the performance and scale of your apps with multiple deployment options, caching insights, and improved support. Klocwork 2018.1 features industry-leading support for C++17 analysis, improved standards coverage, and better support for DevOps environments. TotalView and CodeDynamics 2018 improves mixed language debugging and streamlines your debugging sessions
akuwano 2009/05/18
java

programming
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http://www.cloudera.com/sites/default/files/HDFS_Reliability.html
The Hadoop Distributed Filesystem (HDFS) is a distributed storage system for reliably storing petabytes of data on clusters of commodity hardware. This short paper examines the reliability of HDFS and makes recommendations for best practices to follow when running an HDFS installation. Overview of HDFS HDFS has three classes of node: a single name node, responsible for managing the filesys
akuwano 2009/05/06
fs

hadoop

java
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2009-05-03 - marsã®ãƒ¡ãƒ¢ - Hudson CLI and Groovy shell - Kohsuke Kawaguchi's Blog
http://weblogs.java.net/blog/kohsuke/archive/2009/05/hudson_cli_and.html http://d.hatena.ne.jp/kkawa/20090503/p1 ã“ã‚Œã¯ã•ãï¼ŒHudsonãŒä¸€ä»‹ã®CIã‚µãƒ¼ãƒã‹ã‚‰åˆ†æ•£ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã®ãƒ—ãƒ©ãƒƒãƒˆãƒ•ã‚©ãƒ¼ãƒ ã«åŒ–ã‘ã‚‹ç¬¬ä¸€æ©ãªã‚“ã˜ã‚ƒãï¼Ÿ ...ã£ã¨å‹æ‰‹ã«å¦„æƒ³å…¥ã£ã¡ã‚ƒã£ãŸã‘ã©ï¼ŒHudson 1.302ã‹ã‚‰ã‚³ãƒžãƒ³ãƒ‰ãƒ©ã‚¤ãƒ³ãƒ»ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ã‚¤ã‚¹ï¼ˆCLIï¼‰ãŒå‡ºæ¥ãŸã‚“ã§ã™ã¨ã€‚Groovy ShellãŒå®Ÿè£…ã•ã‚Œã¨ã‚‹ã‚“ã§ï¼Œæ¬¡ã®ã‚³ãƒžãƒ³ãƒ‰ã§Hudsonã«æŽ¥ç¶šã—ã¦Groovyã§æ“ä½œã§ãã‚‹ã¨ã‹ã€‚ $ java -jar hudson-cli.jar -s http://yourserver/hudson groovysh Groovy Shell (1.6.0, JVM: 1.6.0_02-fastdebug) T
akuwano 2009/05/05
java

programming

hudson
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GCã‚’é©åˆ‡ã«è¡Œã‚ã›ã‚‹ãŸã‚ã®ãƒ’ãƒ¼ãƒ—ã‚µã‚¤ã‚ºã®è¨å®š JVMã«GCã‚’é©åˆ‡ã«è¡Œã‚ã›ã‚‹ã«ã¯ãƒ’ãƒ¼ãƒ—ã‚µã‚¤ã‚ºã‚’é©åˆ‡ã«è¨å®šï¼ˆNewé ˜åŸŸã‚µã‚¤ã‚ºã€Oldé ˜åŸŸã‚µã‚¤ã‚ºã€é ˜åŸŸã‚µã‚¤ã‚ºã®ãƒãƒ©ãƒ³ã‚¹ãªã©ï¼‰ã™ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚å½“ç„¶ã€é©åˆ‡ãªãƒ’ãƒ¼ãƒ—ã‚µã‚¤ã‚ºã¯ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã«ä¾å˜ã—ã¾ã™ã€‚ä¸€èˆ¬ã«ãƒ’ãƒ¼ãƒ—ã‚µã‚¤ã‚ºãŒå°ã•ã„ã¨GCãŒé »ç™ºã—ã¦ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãŒä½Žä¸‹ã—ã¾ã™ã€‚ã•ã‚‰ã«ã€ãƒ’ãƒ¼ãƒ—ã‚µã‚¤ã‚ºãŒå¿…è¦é‡ã‚’ä¸‹å›žã‚‹å ´åˆã¯OutOfMemoryErrorãŒç™ºç”Ÿã—ã¦ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãŒåœæ¢ã—ã¦ã—ã¾ã„ã¾ã™ã€‚ä¸€æ–¹ã€ãƒ’ãƒ¼ãƒ—ã‚µã‚¤ã‚ºãŒå¤§ãã„ã¨ã€GCã®èµ·å‹•å›žæ•°ã¯æ¸›ã‚Šã¾ã™ãŒã€GC1å›žå½“ãŸã‚Šã®å‡¦ç†æ™‚é–“ã€ã™ãªã‚ã¡ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³åœæ¢çŠ¶æ…‹ãŒé•·ããªã‚Šã€ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®å¿œç”æ™‚é–“ã«å•é¡ŒãŒå‡ºã‚‹å ´åˆã‚‚ã‚ã‚Šã¾ã™ã€‚ã‚·ã‚¹ãƒ†ãƒ ã®ç‰©ç†ãƒ¡ãƒ¢ãƒªã®ãƒ•ãƒªãƒ¼é ˜åŸŸãŒä¸è¶³ã™ã‚‹ã¾ã§ãƒ’ãƒ¼ãƒ—ã‚µã‚¤ã‚ºã‚’å¤§ããã™ã‚‹ã¨ã€ç‰©ç†ãƒ¡ãƒ¢ãƒªã‹ã‚‰ã‚¹ãƒ¯ãƒƒãƒ—é ˜åŸŸã¸ã®ãƒšãƒ¼ã‚¸ãƒ³ã‚°ãŒèµ·ã“ã£ã¦ã—ã¾ã„ã€ã‹ãªã‚Šã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãŒåŠ£åŒ–ã™ã‚‹å¯
akuwano 2009/04/03
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java

programming

tips
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åˆã‚ã¦ã® JMX (MBean/ã‚¨ãƒ¼ã‚¸ã‚§ãƒ³ãƒˆ[MBean ã‚µãƒ¼ãƒãƒ¼/ãƒ—ãƒãƒˆã‚³ãƒ«ãƒ»ã‚¢ãƒ€ãƒ—ã‚¿ãƒ¼])
JBOSS ã§ã¯å…¨é¢çš„ã«æŽ¡ç”¨ã•ã‚Œã¦ã„ã¾ã™ãŒã€Java Management Extentions (JMX) ã¨ã„ã†ã€ã„ã‚ã„ã‚ãªãƒªã‚½ãƒ¼ã‚¹ã‚’ç®¡ç†ã™ã‚‹ãŸã‚ã®æ¨™æº–ãŒã‚ã‚Šã¾ã™ã€‚ ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã§ã‚‚ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã§ã‚‚ã€ã“ã® JMX ã«å‰‡ã£ã¦ç®¡ç†ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ã‚¤ã‚¹ã‚’æ›¸ã„ã¦ãŠã‘ã°ã€ç°¡å˜ã«ç®¡ç†ã‚¨ãƒ¼ã‚¸ã‚§ãƒ³ãƒˆã‚„ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹ãŸã‚ã®ãƒ—ãƒãƒˆã‚³ãƒ«ãƒ»ã‚¢ãƒ€ãƒ—ã‚¿ãƒ¼ã‚’çµ„ã¿åˆã‚ã›ã‚‹ã“ã¨ãŒã§ãã‚‹ã€ã¨ã„ã†ã‚‚ã®ã§ã™ã€‚ å…·ä½“çš„ã«ã©ã®ã‚ˆã†ã«ä½¿ç”¨ã§ãã‚‹ã‹ã¯ JBOSS ã®ç®¡ç†ã‚³ãƒ³ã‚½ãƒ¼ãƒ«ã®ä¾‹ã‚’è¦‹ã¦ã„ãŸã ã‘ã‚Œã°ã‚ˆã‚Šã‚ã‹ã‚‹ã¨æ€ã„ã¾ã™ãŒã€ãŸã¨ãˆã°ã€ã“ã® JMX ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ã‚¤ã‚¹ã‚’ã¨ãŠã—ã¦ã‚µãƒ¼ãƒãƒ¼ã®ã‚·ãƒ£ãƒƒãƒˆãƒ€ã‚¦ãƒ³ã‚‚å¯èƒ½ã«ãªã£ã¦ã„ã¾ã™ã€‚ãã®éš›ã€ãƒ—ãƒãƒˆã‚³ãƒ«ãƒ»ã‚¢ãƒ€ãƒ—ã‚¿ãƒ¼ã¨ã—ã¦ã¯ HTTP ã¨ RMI ãŒçµ„ã¿åˆã‚ã•ã‚Œã¦ã„ã¾ã™ã®ã§ã€ã©ã¡ã‚‰ã®æ‰‹æ®µã‚’ä½¿ç”¨ã—ã¦ã‚‚ã‚·ãƒ£ãƒƒãƒˆãƒ€ã‚¦ãƒ³ã‚’è¡Œã†ã“ã¨ãŒã§ãã‚‹ã‚ˆã†ã«ãªã£ã¦ã„ã¾ã™ã€‚ JMX ã«ã¤ã„ã¦ã¯ Sun ã‹ã‚‰å‡ºã¦ã„ã‚‹ White P
akuwano 2009/04/03
java

programming

tips
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Oracle Java Technologies | Oracle
Java Is the Language of Possibilities Java is powering the innovation behind our digital world. Harness this potential with Java resources for student coders, hobbyists, developers, and IT leaders.
akuwano 2009/04/03
java

programming

tips
ãƒªãƒ³ã‚¯
Java æš—å·åŒ–æ‹¡å¼µæ©Ÿèƒ½ JDK5.0
Java Is the Language of Possibilities Java is powering the innovation behind our digital world. Harness this potential with Java resources for student coders, hobbyists, developers, and IT leaders.
akuwano 2009/04/03
java

programming

tips
ãƒªãƒ³ã‚¯
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