Apache Helix - Near-Realtime Rsync Replicated File System
A cluster management framework for partitioned and replicated distributed resources Quick Demo This demo starts 3 instances with id’s as localhost_12001, localhost_12002, localhost_12003 Each instance stores its files under /tmp/<id>/filestore localhost_12001 is designated as the master, and localhost_12002 and localhost_12003 are the slaves Files written to the master are replicated to the slaves
JVM Internals
This article explains the internal architecture of the Java Virtual Machine (JVM). The following diagram show the key internal components of a typical JVM that conforms to The Java Virtual Machine Specification Java SE 7 Edition. The components shown on this diagram are each explained below in two sections. First section covers the components that are created for each thread and the second section
GraalVMã§Rustå‹•ã‹ã—ãŸã‚Šãƒ¬ã‚¤ãƒˆãƒ¬ã‚’ãƒã‚¤ãƒ†ã‚£ãƒ–コンパイルã—ãŸã‚Š - ãã—ã ã®Hatena
GraalVMãŒæ£å¼ã«ãƒªãƒªãƒ¼ã‚¹ã•ã‚Œã¾ã—ãŸã€‚çµæ§‹è©±é¡Œã«ãªã£ã¦ã¾ã™ã。 GraalVMã¯ã€Graal JITã¨AoTã€ãã—ã¦ASTエンジンTruffleã®è¤‡åˆä½“ã§ã™ã€‚(ã‹ãªï¼Ÿ) GraalVM ã¨ã„ã†ã“ã¨ã§ã€Rustå‹•ã‹ã—ãŸã‚ŠJavaã§æ›¸ã„ãŸãƒ¬ã‚¤ãƒˆãƒ¬ã‚³ãƒ¼ãƒ‰ã‚’ãƒã‚¤ãƒ†ã‚£ãƒ–コンパイルã—ãŸã‚Šã—ã¦ã¿ã¾ã—ãŸã€‚ Hyper-Vã§Ubuntuを用æ„ã™ã‚‹ ã»ã‚“ã¨ã¯Windows Subsystem of Linux(WSL)ã§ã‚„ã‚ŠãŸã‹ã£ãŸã®ã ã‘ã©ã€WSL上ã§JavaãŒã¡ã‚ƒã‚“ã¨å‹•ã„ã¦ãã‚Œãªã‹ã£ãŸã®ã§ã‚ãらã‚ã¾ã—ãŸã€‚ ã§ã€VirtualBox使ã†ã‹ãªã¨æ€ã£ãŸã‘ã©ã€Hyper-Vを無効ã«ã—ãªã„ã¨ã„ã‘ãªãã¦ã€Hyper-Vを無効ã«ã™ã‚‹ã¨DockerãŒå‹•ã‹ãªããªã‚‹ã®ã§ã‚„ã ãªãƒ¼ã¨æ€ã£ã¦ãŸã®ã ã‘ã©ã€æ™®é€šã«Hyper-Vã§UbuntuãŸã¡ã‚ã’ã‚Œã°ã„ã„ã®ã§ã¯ãƒ¼ã¨æ€ã£ã¦ã‚„ã£ã¦ã¿ã¾ã—ãŸã€‚ 普通ã«ä½¿ãˆã¾ã™ãŒã€ç”»é¢ã‚µã‚¤ã‚ºèª¿æ•´ã‚„フォルダ共
JVM Anatomy Park
"JVM Anatomy Quarks" is the on-going mini-post series, where every post is describing some elementary piece of knowledge about JVM. The name underlines the fact that the single post cannot be taken in isolation, and most pieces described here are going to readily interact with each other. The post should take about 5-10 minutes to read. As such, it goes deep for only a single topic, a single test,
Infer : RacerD | Infer
RacerD finds data races in your Java code. This page gives a more in-depth explanation of how the analysis works, but may be less complete than the Thread Safety Violation bug description page. To run the analysis, you can use plain infer (to run RacerD along with other analyses that are run by default) or infer --racerd-only (to run only RacerD). For example, the command infer --racerd-only -- ja
Gnirehtet rewritten in Rust · ~rom1v/blog
Several months ago, I introduced Gnirehtet, a reverse tethering tool for Android I wrote in Java. Since then, I rewrote it in Rust. And it’s also open source! Download it, plug an Android device, and execute: ./gnirehtet run (adb must be installed) Why Rust? Learning Rust Difficulties Encapsulation Observer Mutable data sharing Compiler limitations Safety pitfalls Leakpocalypse Undefined infinity
Semicolonless Java を実ç¾ã™ã‚‹è©± - Doge log
Semicolonless Java を実ç¾ã™ã‚‹è©± デンジャラスï¼ã‚¾ãƒ³ãƒ“ï¼ï¼ï¼ ã“ã‚“ã«ã¡ã¯ï¼ã‚²ãƒ¼ãƒ マスターã“㨠檀 黎斗 ã§ã™ï¼ 2000 å¹´å•é¡Œã§ãƒã‚°ã‚¹ã‚¿ãƒ¼ã‚¦ã‚£ãƒ«ã‚¹è¦‹ã¤ã‘ãŸã®åƒ•ã§ã™ã‹ã‚‰ï¼ï¼ ã‹ã‚‰ã®ãƒ¼ ジュリアナーï¼ï¼ãƒˆãƒ¼ã‚ãƒ§ãƒ¼ï¼ ã“ã‚“ã«ã¡ã‚ã€ã‚¸ãƒ§ãƒ³ãƒ»ãƒãƒ“ンソンã“ã¨åŠã‚ºãƒœãƒ³ã®å®‡å®™äººã§ã™ã€‚ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ã©ã†ã§ã™ï¼Ÿãªã‚“ã¦ã„ã†ã‹ã‚¢ãƒ¡ãƒ–ãƒã£ã½ã„æ„Ÿã˜ã£ã¦ã„ã†ã®ï¼Ÿãƒ ã‚«ã¤ãã§ã—ょ？？ ãã†ã§ã—ょã†ï¼ãã†ã§ã—ょã†ï¼ ã¨ã“ã‚ã§ã¿ãªã•ã‚“ã€Java 書ã„ã¦ã¾ã™ã‹ï¼ŸGenerics ç†è§£ã—ã¦ã¾ã™ã‹ï¼Ÿ 無駄ã«ãƒ‰ãƒªã‚³ãƒ ã®ã‚¹ãƒ©ã‚¤ãƒ‰ã«é‡£ã‚‰ã‚Œã¦ã¾ã›ã‚“ã‹ï¼Ÿ 今回㯠Semicolonless Java ã«ã¤ã„ã¦æ›¸ã„ã¦ã¿ãŸã„ã¨æ€ã„ã¾ã™ã€‚ Semicolonless Java Semicolonless Java ã¨ã¯ãã®åã®é€šã‚Šã€ã‚»ãƒŸã‚³ãƒãƒ³ã‚’使ã‚ãšã« Java ã§ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã™ã‚‹ã“ã¨ã§ã™ã€‚ ã‚る種ã®ãƒ‘ズルã€ã‚³
How Urban Airship Scaled to 2.5 Billion Notifications During the U.S. Election - High Scalability -
This is a guest post by Urban Airship. Contributors: Adam Lowry, Sean Moran, Mike Herrick, Lisa Orr, Todd Johnson, Christine Ciandrini, Ashish Warty, Nick Adlard, Mele Sax-Barnett, Niall Kelly, Graham Forest, and Gavin McQuillan Urban Airship is trusted by thousands of businesses looking to grow with mobile. Urban Airship is a seven year old SaaS company and has a freemium business model so you ca
Distributed Systems Chair
We are part of: University of Tartu Faculty of Science and Technology Institute of Computer Science The Distributed Systems Chair performs teaching and research in parallel computing, peer to peer computing, mobile and cloud computing and real-time location-based big data problems, distributed and pervasive systems and autonomous driving. Distributed Systems Chair connects the following subgroups:
Java ãŒæ”¯ãˆã‚‹ 人気ニュースアプリ NewsPicks ã®è£å´
JJUG CCC 2015 Spring ã®ç™ºè¡¨è³‡æ–™ã§ã™ã€‚
Log4j 2ã«ã‚‚採用ã•ã‚ŒãŸLMAX Disruptorã¯ãªãœç‹‚ã£ãŸã‚ˆã†ã«é€Ÿã„ã®ã‹ï¼Ÿ
LMAXã¨ã„ã†ä¼šç¤¾ã¯ãŠãらãFXæ¥è€…ã§ã€ç†è€…ã¯LMAXã®é–‹ç™ºè€…ã®è¬›æ¼”ã‚’ã€InfoQã®å‹•ç”»ã§ä½•åº¦ã‹è¦‹ãŸã“ã¨ãŒã‚ã£ãŸã€‚ 彼らã¯éžå¸¸ã«ç‰¹ç•°ãªé›†å›£ã§ã€ã•ã—ãšã‚「Javaã®ã‚¹ãƒ”ード狂ã€ã¨ã„ã†æ„Ÿã˜ã 。 å°è±¡çš„ãªã®ã¯ã€ã‚·ãƒ³ã‚°ãƒ«ã‚¹ãƒ¬ãƒƒãƒ‰ã§ä»•äº‹ã‚’片付ã‘ã‚‹ã“ã¨ã‚’強調ã—ã¦ã„る点ã 。 「Javaãªã‚‰ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã§ä¸¦åˆ—処ç†ã™ã‚Œã°æ€§èƒ½ãŒå‡ºã‚‹ã¨åºƒãæ€ã‚ã‚Œã¦ã„ã‚‹ãŒã€æˆ‘々ã®ä»•äº‹ã«ãŠã„ã¦ã¯ã‚·ãƒ³ã‚°ãƒ«ã‚¹ãƒ¬ãƒƒãƒ‰ãŒæœ€é€Ÿã ã€ã¨ã„ã†ã‚ˆã†ãªä¸»å¼µã‚’何度も見ãŸã€‚ ゴールドマンサックスã¨ã„ã„LMAXã¨ã„ã„ã€ã‚„ã¯ã‚Šå¤šé¡ã®é‡‘ãŒå‹•ã会社ã§ã‚¬ãƒã§Javaã‚’ã‚„ã£ã¦ã„る連ä¸ã¯ã‚«ãƒªã‚«ãƒªã«ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã™ã‚‹ãŸã‚ã€æŠ€è¡“çš„ã«ã¯éžå¸¸ã«é¢ç™½ã„。 彼らãŒã‚³ã‚¢ã®ãƒ©ã‚¤ãƒ–ラリをOSS化ã—ã¦ãれるã¨ã„ã†ã®ã¯ã€é‡‘èžæ¥ç•Œã‚’å¦å®šçš„ãªç›®ã§è¦‹ã‚‹ç†è€…ã‹ã‚‰ã™ã‚‹ã¨è¤‡é›‘ã ãŒã€æ‚”ã—ã„ã“ã¨ã«å‚考ã«ãªã‚‹ã€‚ LMAX Disruptorã¯Javaã®ãƒ©ã‚¤ãƒ–ラリã 。Producer/Consumerパターン
FindBugs - Find Bugs in Java Programs
This is the web page for FindBugs, a program which uses static analysis to look for bugs in Java code. It is free software, distributed under the terms of the Lesser GNU Public License. The name FindBugs™ and the FindBugs logo are trademarked by The University of Maryland. FindBugs has been downloaded more than a million times. The current version of FindBugs is 3.0.1. FindBugs requires JRE (or J
PMD
$ cd $HOME $ wget https://github.com/pmd/pmd/releases/download/pmd_releases%2F7.8.0/pmd-dist-7.8.0-bin.zip $ unzip pmd-dist-7.8.0-bin.zip $ alias pmd="$HOME/pmd-bin-7.8.0/bin/pmd" $ pmd check -d /usr/src -R rulesets/java/quickstart.xml -f text $ cd $HOME $ curl -OL https://github.com/pmd/pmd/releases/download/pmd_releases%2F7.8.0/pmd-dist-7.8.0-bin.zip $ unzip pmd-dist-7.8.0-bin.zip $ alias pmd="$
ã¯ã˜ã‚ã®è¨€èªžã®è³žå‘³æœŸé™ - Kato Kazuyoshi
ライブドアブãƒã‚°ã® PSGI 化ã®è©± ã¯è‰¯ã„ã¯ãªã—ã ã¨æ€ã†ã€‚一方ã§ã€ç§ã¯ã‚ã‚“ã¾ã‚Š Perl ãŒå¥½ãã˜ã‚ƒãªã„ã®ã§ã€10å¹´ã«ã‚ãŸã£ã¦ç”Ÿã続ã‘㟠Perl アプリケーションãŒã€æ¬¡ã®10å¹´ã«ã‚€ã‘ã¦ã‚¢ãƒƒãƒ—ã‚’ã¯ã˜ã‚ã¦ã„ã‚‹ã®ã¯ã€ã¡ã‚‡ã£ã¨ã—ãŸãƒ›ãƒ©ãƒ¼ã§ã‚‚ã‚る。 Twitter 㨠Ruby 㨠JVM ライブドアブãƒã‚°ãŒã€å°†æ¥ã«å‘ã‘㦠mod_perl ã‹ã‚‰ PSGI + Starlet ã«ã‹ãˆãŸã‚ˆã†ã«ã€å°†æ¥ã«å‘ã‘ã¦ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã‚’ã‹ãˆã‚‹äººé”ã‚‚å˜åœ¨ã™ã‚‹ã€‚最近ã®äº‹ä¾‹ã§æœ‰åãªã®ã¯ã€Twitter ã® Ruby ã‹ã‚‰ JVM 言語群ã¸ã®ç§»è¡Œã ã‚ã†ã€‚ OSCON Java 2011 ã® Twitter: From Ruby on Rails to the JVM ã§ã¯ã€JVM ã¸ã®ç§»è¡Œã«è‡³ã£ãŸç†ç”±ã¨ã—㦠Ability to handle server workloads A real concurrency
Home – Fantom
Fantom Programming Language Fantom is a portable language that runs on the JVM and modern web browsers. It features a familiar Java-like syntax, static (and dynamic) typing, elegant system library, closures, immutability, actor concurrency, and much more. // Hello from Fantom! class HelloWorld { static Void main() { echo("Hello, World!") } }
軽é‡ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ãªã‚‰H2ãŒãŠå‹§ã‚ - rabbit2goã®ãƒ–ãƒã‚°
世ã®ä¸ã§ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã¨ã„ã†ã¨ã€å¤§ããªã‚µã‚¤ãƒˆã§è†¨å¤§ãªé‡ã®ãƒ‡ãƒ¼ã‚¿ã‚’管ç†ã™ã‚‹ã‚‚ã®ã¨æ€ã‚ã‚ŒãŒã¡ã ã‘ã©ã€å®Ÿã¯ã€Œãã‚“ãªä»°ã€…ã—ã„ã‚‚ã®ã§ãªãã¦è‰¯ã„ã‹ã‚‰ã€æ‰‹ã£å–ã‚Šæ—©ãç°¡å˜ã«ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚’使ã„ãŸã„ã€ã¨ã„ã†ãƒ‹ãƒ¼ã‚ºã‚‚æ„外ã«å¤šã„。ãã‚“ãªãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã¨ã—ã¦ãŠå‹§ã‚ãªã®ãŒJavaã§æ›¸ã‹ã‚ŒãŸH2ã 。 H2 Database Engine ãŠå‹§ã‚ã®ç†ç”±ã¯ä¸‹è¨˜ã®é€šã‚Šã€‚ å°Žå…¥ãŒç°¡å˜ 1.2MB程度ã®jarファイル（最新版ã§ã‚ã‚‹ver.1.3.154ã®å ´åˆï¼‰ã‚’å©ãã ã‘ã§ã€ã‚ã£ã¨ã„ã†é–“ã«èµ·å‹•ã™ã‚‹ã€‚ä»–ã®ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã«æ¯”ã¹ã¦ã€å°Žå…¥ã«å¿…è¦ãªæ‰‹é–“ãŒåœ§å€’çš„ã«å°ã•ã„。 % java -jar h2-1.3.154.jar ウェブ画é¢ãŒæ¨™æº–装備 上記ã®ã‚³ãƒžãƒ³ãƒ‰ã‚’å©ãã¨ã€ä¸‹è¨˜ã®ã‚ˆã†ãªã‚¦ã‚§ãƒ–ページã«ã‚¢ã‚¯ã‚»ã‚¹å‡ºæ¥ã‚‹ã®ã§ã€SQLを入力ã—ã¦ãƒ†ãƒ¼ãƒ–ルやデータã®ç·¨é›†ãŒå¯èƒ½ã«ãªã‚‹ã€‚特ã«é–‹ç™ºæ™‚ã«ã¯æœ‰ã‚Šé›£ã„機能ã 。 ODBCドライãƒã‚’利用å¯èƒ½ PostgreSQLã®
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Bitbucket | Git solution for teams using Jira
Charles Oliver Nutter - Fast as C: How to write really terrible Java
GitHub - YahooArchive/ygloo-ymagine: [archiving soon]![GitHub - YahooArchive/ygloo-ymagine: [archiving soon]](https://cdn-ak-scissors.b.st-hatena.com/image/square/c5c4ac1757d14f8bc6d892229a877b1cecd28ae7/height=288;version=1;width=512/https%3A%2F%2Fopengraph.githubassets.com%2F33b520cc44055cc2684860e92ba587454323d03db41e2a03ec777ed362a51053%2FYahooArchive%2Fygloo-ymagine)
GitHub - google/Refaster
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