zuqqhi2のIT日記

プログラミング ＋ アカデミック + 何か面白いこと

   Aug 31

[node.js][exprees]How to take snapshot of CPU and Heap

By zuqqhi2
Overview I used to be annoyed by memory leak (and CPU load) when I use node.js for web app development. I trie […]
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Posted in Backend, Programming , , , | Comments Off on [node.js][exprees]How to take snapshot of CPU and Heap

   Aug 24

[StreamingAPI][Ruby]Try to build Streaming API with Ruby

By zuqqhi2
Overview Try to build Streaming API with rack-stream library. Environment OS Linux www4322gi 3.2.0-64-generic […]
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Posted in Backend, Programming , , | Comments Off on [StreamingAPI][Ruby]Try to build Streaming API with Ruby

   Aug 11

[php5-fpm]Check point for heavy site with php5-fpm

By zuqqhi2
Overview One day a site return 500 status with Nginx+php5-fpm+Wordpress structure. I checked Nginx error log. […]
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Posted in Tuning , , , | Comments Off on [php5-fpm]Check point for heavy site with php5-fpm

   Aug 03

[PCL][Python][CPP]Install Python PCL(Point Cloud Library) And Run Sample Program

By zuqqhi2
Overview Try to use python binding of Point Cloud Library(Point Processing Library) Python binding can treat a […]
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Posted in Academic, Computer Vision , , , | Comments Off on [PCL][Python][CPP]Install Python PCL(Point Cloud Library) And Run Sample Program

   Jul 20

[Test][ShellScript]Write test code and measure C0 coverage for shell(bash) using shunit2 and shcov

By zuqqhi2
Outline Write test code and measure coverage for TDD with shell script. I’ll use shunit2 for test and sh […]
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Posted in Test, Programming , , , , | Comments Off on [Test][ShellScript]Write test code and measure C0 coverage for shell(bash) using shunit2 and shcov

   Jul 13

[Test][CoffeeScript]Measure coverage with Coffee Script Mocha Blanket

By zuqqhi2
Overview Measure C0 coverage of CoffeeScript by Mocha/Blanket. Environment OS: Ubuntu 12.04LTS Node.js v0.10.2 […]
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Posted in Test, Programming , , | Comments Off on [Test][CoffeeScript]Measure coverage with Coffee Script Mocha Blanket

   Jul 06

[Go]{LeastSquareMethod]Optimize parameters with polynomial by Least Square Method

By zuqqhi2
Required partial differentiation Elementary matrix Least Square Method 20140706 zuqqhi2-lsm-v1 from Hidetomo S […]
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Posted in Academic, Machine Learning , , | Comments Off on [Go]{LeastSquareMethod]Optimize parameters with polynomial by Least Square Method

   Jun 29

[Plotinum][Go]Draw chart with Go lang

By zuqqhi2
Outline We can draw charts with Go lang using Plotinum. I’ll draw a chart with the library. Install It&# […]
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Posted in Backend, Programming , , | Comments Off on [Plotinum][Go]Draw chart with Go lang

   Jun 22

[Algorithm] Greedy Method

By zuqqhi2
Target Greedy Method Apply Greedy Method To The Problem Source Code Result
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Posted in Algorithm , , | Comments Off on [Algorithm] Greedy Method

   Jun 15

[Algorithm]Solve Maze By Depth-First Search

By zuqqhi2
Target Solve a maze by Depth-First Search. Representation of Maze Representation of a Point Model What’s […]
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Posted in Algorithm, Programming , , | Comments Off on [Algorithm]Solve Maze By Depth-First Search

   Apr 13

[Java]Install JDK 7

By zuqqhi2
Target Environment
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Posted in Backend, Programming , | Comments Off on [Java]Install JDK 7

   Apr 12

[Perl]Install plenv

By zuqqhi2
What’s plenv How to install
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Posted in Backend, Programming , , | Comments Off on [Perl]Install plenv

   Apr 02

[Coffee Script][Jenkins]Measure Coverage with Karma

By zuqqhi2
jenkins nginx Karma Setting Needed Library Cakefile Setting Preparing converter from coffee script to javascript to work Kar […]
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Posted in Test, Programming , , , | Comments Off on [Coffee Script][Jenkins]Measure Coverage with Karma

   Mar 08

Issue query with client side javascript to ElasticSearch

By zuqqhi2
Environment Ubuntu 12.04 LTS 関連情報 How to install Outline Prepare data Make index Make type Insert test data Se […]
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Posted in Programming, Frontend | Comments Off on Issue query with client side javascript to ElasticSearch

   Feb 26

[Android][Scala][Windows7]Develop Android App with Scala

By zuqqhi2
Target Scala is better than Java for me, So I’ll try to develop Android app with scala. Actually, I want […]
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Posted in Device, Programming , , | Comments Off on [Android][Scala][Windows7]Develop Android App with Scala

   Feb 09

[ElasticSearch][Kibana][Fluentd][Nginx] Make a Site Measurement Organization

By zuqqhi2
Overview Try to construct a organization like the figure. Install ElasticSearch Download Elastic Search from f […]
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Posted in Backend, Programming , , , , | Comments Off on [ElasticSearch][Kibana][Fluentd][Nginx] Make a Site Measurement Organization

   Nov 24

[Grunt][CoffeeScript]Make minified JS from CoffeeScript when source file is updated

By zuqqhi2
Target Make a system to monitor source files, do tests, compile and minify when the files are updated. We can […]
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Posted in Backend, Programming, Frontend , , | Comments Off on [Grunt][CoffeeScript]Make minified JS from CoffeeScript when source file is updated

   Nov 22

[Shell][mysql]Monitor mysqld process and reboot it if it’s needed

By zuqqhi2
Target mysqld die sometimes at my web app, So I tried to make a shell script to reboot the process if the proc […]
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Posted in Backend, Programming , , | Comments Off on [Shell][mysql]Monitor mysqld process and reboot it if it’s needed

   Nov 21

[Ruby]Retrieve English tweets from Twitter Streaming API and insert them into mongoDB

By zuqqhi2
Fluentd Twitter plugin didn’t work, so I tried to make a program which get tweets from twitter streaming […]
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Posted in Backend, Programming , , , | Comments Off on [Ruby]Retrieve English tweets from Twitter Streaming API and insert them into mongoDB

   Oct 19

Install zsh and Set to show adage at login

By zuqqhi2
Target Install zsh to Ubuntu 12.04 LTS and set to show adage at login. Install zsh Set zsh to default shell Co […]
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Posted in Backend, Programming , | Comments Off on Install zsh and Set to show adage at login
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