October 6, 2015 
6 min readDEVLAB has been revised and made into an official blog in earnest as IsaB, and the number of people who write articles should increase in the future, so I transcribed this post as a welcome document for this blog as a **Markdown notation template** and **for confirming the display style**, but it is also a TIPS that is not particularly problematic even if it is released to the public, so I will publish it as an article. What is markdown notation in the first place? ── There may be many people who say, >...
April 7, 2015 Traditionally, CSS and JavaScript, the main assets of the web frontend, were difficult to manage at the source level, and quickly entered chaotic territory and became difficult to maintain. To make CSS and JavaScript in this chaotic area easier to maintain and manage at the source level, the compiled build mechanisms of Grunt and Gulp were created. In today's world, front-end development is SCSS (SASS, LES...
April 7, 2015 I have a strong feeling now, but in the world, the default development method in front-end development is to improve the efficiency of CSS and JavaScript coding with SCSS (SASS, LESS, etc.), CoffeeScript, etc., while at the same time making it easier to maintain and manage the source. I'm a big fan of incorporating technology in that area, and I used to code CSS and JavaScript raw, but recently I've been doing it...
February 9, 2015 The Ruby On Rails app, which was running normally until yesterday, until mid-morning, and just a while ago, suddenly got "Routing Error: Uninitialized constant XXXXX...
January 29, 2015 4 min readWhen I was researching about Unicode's "surrogate pairs" in a separate matter, an article about the "surrogate key" and "compound primary key" in the database was caught in the **surrogate** connection and I derailed as much as I could (laughs)...
January 7, 2015 5 min readHappy New Year everyone. Well, I think I'll start my first post in 2015 with the hottest Ruby story right now. ...
December 19, 2014 3 min readOn the application side, there are times when you want to check the current health status of any AWS EC2 instance in real time. For example, when starting or stopping an EC2 instance from an external application, this is the case where you want to check the operation status of the instance and run the next process when the status changes. SDK for...
October 29, 2014 3 min readWhen I was writing a task in Capistrano3, I had a hard time obtaining the top-level task name because I had a hard time obtaining the top-level task name because I had a hard time subtracting the name of the top-level task executed as a cap command in the task. Basically, if you want to get your task name in a task in Capistrano3, you can draw it as an argument to the block as follows: ``` desc "main task" task...
September 29, 2014 2 min readWhen processing Ruby + MySQL, I think there are many cases where 'ruby-mysql' or 'mysql2' is used in the MySQL operation system libraries, but since it was necessary to perform MySQL query operations in a raw Ruby environment without these libraries, I tried to generalize the source I wrote at that time and summarize it. Well... There may be almost no need, but I thought I'd share it as TIPS. ...
September 12, 2014 5 min readDEVLAB is run on WordPress, and I found an article about WordPress that caught my attention. **The WordPress site's home URL should include "? author=x" will reveal the username on the site ** (* For more information, see MT Systems' WordPress...
September 2, 2014 2 min readWhen I ran a task in Capistrano3 by changing the stage environment, I fell into the symptom of the task being launched twice. Since the task is executed in duplicate, even if you set "two" AWS instances to be launched, "four" will occur, and the queries issued to MySQL will also be doubled, and the records to be INSERTED will be inserted in duplicates. The settings that were temporarily written to the file were also overwritten by the subsequent tasks that were started twice, and the dep...
August 4, 2014 So far, we have created a new AWS EC2 instance and made it a task in Capistrano 3 up to the initial configuration for that instance. Although it was difficult, we finally got to the point where the EC2 instance was ready and all we had to do was install the middleware and applications. Therefore, this time, I would like to summarize the deployment flow so far. ...
