Category Archives: Miscellaneous

The Repetitions Eliminator R Library “mmetrics”

Have you ever faced a situation where you need to compute the same metrics using similar or even the same computation formulas over and over again? How do you usually handle those repetitive tasks? As many engineers in our field of work know, dplyr is one of the most cool and efficient data wrangling grammars that provide us …

SeleniumConf Tokyo 2019

Introduction to SeleniumConf Selenium is one of the most popular automated software testing frameworks for the past decade. There are Selenium conferences in different cities around the world held on a regular basis. This year’s event, for the first time, was held in Tokyo. And it was also our first time attending a technical conference in …

App Design and Development Conference: An iOS Developer’s Impression

A great app needs both developers and designers working together, but we often have different tools and care about different aspects of the product. It can sometimes be difficult to coordinate our work, but at LINE we always try new ways to work more effectively. For instance, I’ve trained designers on our team on how …

A walkthrough of my experience at WWDC19

The Apple World Wide Developer Conference (WWDC) is an annual event for developers who want to see the latest announcements from Apple. I was blessed with the opportunity to attend WWDC19, and I’m grateful that LINE covered all the expenses to make it happen. As this was the first time attending this wonderful conference for …

Highlight LINE THAILAND DEVELOPER CONFERENCE 2019 – ‘Endless Possibilities with LINE API’

Hi there, I’m Tan, a member of Developer Relations team in LINE Thailand. Recently, LINE Thailand has held the first technology conference by the name of “LINE Thailand DEVELOPER CONFERENCE 2019”. The event took place at BITEC Bangna on Saturday, May 25th. We had many developer guests as well as people from technology communities, with a pleasantly surprising participation count of more than 800 participants.

How and what front-end developers actually do at LINE?

Hello to the world! I’m Yeon-Eui Hong from Developer Relations Team. I’d like to take this opportunity to share the story of the LINE Developers Meetup held for the second time in Korea, on April 16, 2019. The theme of this meetup was “LINE front-end developers, what do they actually do and how?” I was proud to …

First experience and takeaways of Google I/O 2019

Google I/O is an annual developer conference held by Google that brings together developers from around the globe for talks, hands-on learning with Google experts, and a first look at Google’s latest developer products. As an Android developer, it’s a dream to attend this conference, or you could say, festival. I am so honored and …

LINE Things automatic communication

The long-awaited “Automatic Communication” functionality has finally been released. This new feature will allow Bluetooth LE communication even if the LINE Things app is not launched. LINE Things-compatible IoT devices will be able to work closely with a LINE bot in an instant with this feature.

LINE DEVELOPER DAY 2018 Recap

LINE has been hosting an annual technology conference, a.k.a. LINE Developer Day, in Tokyo since 2015, and this event has been evolving in size and quality ever since. In November 2018, LINE DEVELOPER DAY 2018 was held at Happoen Garden in Tokyo with the participation of more than 1,000 developers. As I was providing support for this conference from Korea, I attended the event and I’d like to share a few snapshots of LINE DEVELOPER DAY 2018.

Performance impact of MySQL performance-schema-instruments

Hi, there! I’m Otsuka (tom__bo), mainly responsible for MySQL operations and development of various DB administration and verification tools. In this post, I am going to write about my experiment on MySQL performance when its performance consumers, namely the performance_schema database and the innodb_metrics table of the information_schema database, are up and running.  I got to learn about the performance_schema and the INFORMATION_SCHEMA.INNODB_METRICS from a book …