Blog - LINE ENGINEERING

As of October 1, 2023, LINE has been rebranded as LY Corporation. Visit the new blog of LY Corporation here: LY Corporation Tech Blog

The next step for even safer messaging: Letter Sealing
Shin Kibin2016-08-11
He is a LINE engineer working on the messaging server.
In New generation of safe messaging: “Letter Sealing”, we announced that end-to-end encryption (E2EE) has been made available on LINE messages. But we've made even more improvements to safe messaging over the past few months, expanding Letter Sealing to features other than one-on-one chats. We'd like to share some of them here in this post. What changed? Letter Sealing is now enabled on one-on-one chats by default In the previous version of LINE, you had to opt in to use Letter Seali
- Security Engineering
Official LINE Developer Day 2016 website and registration form
Yusuke Kushii2016-08-07
In charge of actively and creatively promoting the technologies of LINE both in and out of the company. Also in charge of operations of LINE Developer Day 2016.
We've already announced LINE Developer Day 2016. Today, we're happy to announce that the official website and registration forms are also available. Overview Date/Time: September 29, 2016 from 10 a.m. to 6:30 p.m. Place: Shibuya Hikarie, 9F, Hikarie Hall Invitees: Application and web engineers Admission: Free After-party: To take place in the Hikarie Hall after the event Registration You can register for the conference here. (Registrations are open until September 15) We have 50 seats reserve
- LINE DEVELOPER DAY
Applying CircuitBreaker to Channel Gateway
Shin Jong Hun2016-08-04
I don’t like being inconvenienced. One of the focal points of my work is to reduce these inconveniences so I have more time to focus on what matters. I think that’s why I like programming. Although I can’t really figure out why I seem to be getting busier with time…
Before reading If you have yet to read the introductory article to circuit breakers, I recommend you read the following article first: Circuit Breakers for distributed services Applying CircuitBreaker to Channel Gateway Channel Gateway servers provide various LINE server features to content providers. This is why Channel Gateway servers are highly affected by the servers they are connected to, with the effects easily spreading across all Channel Gateway servers. It was when I was struggling to
Report on Prometheus Casual Talks in Tokyo and then toward PromCon 2016
Yukawa Wataru2016-08-01
He is a data engineer at LINE. He usually works with Hadoop, Hive, Presto, Azkaban, Fluentd, Elasticsearch, Prometheus, Grafana, and more.
IntroductionHello, my name is Wataru Yukawa. I work at LINE as a data engineer.As a data engineer, my daily duties include using Fluentd to collect logs, Hadoop to accumulate, and Hive to aggregate and analyze logs. Our Hadoop cluster is medium-sized, consisting of 40 units and approximately 370TB of DFS used space. Data from LINE family apps is smaller compared to the LINE app. While it's nowhere near large enough to be considered as big data, it still has many types of different data, Fluentd
- Event Report
- 登壇情報
Circuit breakers for distributed services
Ono Yuichi2016-07-24
He is a LINE engineer.
Hello, my name is Ono and I'm a LINE engineer. In this blog post, I'd like to talk about "circuit breakers" which we use with our LINE servers. What is a Circuit Breaker? The backend server systems for various web services and apps including LINE consist of networks that have several services connected with each other through APIs and RPCs. What would happen if one of these networks suddenly failed to respond? The downed services would be blocked until they time-out, and all other services that
Introducing the LINE Game AirBorne DataCenter
OH WANG JIN2016-07-24
He is a data engineer for the LINE Ads Platform. His main development areas are games, security and search and is currently working on the big data technology.
Last time I posted an article titled, "Analyzing Large Amounts of Security Data with Spark, Mesos, Zeppelin, and HDFS." Today I will introduce how LINE applies cloud and stream processing technology to perform near-real-time processing on game data detected by AirArmor1. 1: AirArmor is a security solution for mobile games developed by LINE. AirBorne DataCenter & Mesos (with DC/OS) To analyze security data, we built our own system named AirBorne DataCenter. The system uses Apache Mesos as its
- LINE Game
How to provide stable "Loves"
Kawakami Taiki (moznion) 2016-07-11
He develops the LIVE service at LINE.
Hello, my name is Moznion and I'm part of the team working on LIVE: a video-based social media service that connects stars and celebrities to their fans.On LIVE, users can watch their favorite stars participating in programs or performing concerts all in real-time. LIVE is currently available on iOS/Android and on PC web browsers, and quickly gaining popularity.In this blog post, I'd like to explain how we handle large amounts of consecutive requests sent on LIVE.IntroductionOn the iOS/Android v
- frontend
LINE Developer Day 2016
Yusuke Kushii2016-07-11
In charge of actively and creatively promoting the technologies of LINE both in and out of the company. Also in charge of operations of LINE Developer Day 2016.
Hello everyone. My name is Kushii, and I am in charge of organizing conferences at LINE.I am pleased to announce that LINE Developer Day will be taking place once again this year. At the event our engineering team plan to share some of the experiences, the technical challenges that exist in Japan and overseas, and introduce our latest products directly to you. Security-related topics, BOTs, and other themes will be explored during our individual sessions to explain how LINE strives to overcoming
- linedevday
Fukuoka office, reopened with a whole new look
Yusuke Kushii2016-07-07
In charge of actively and creatively promoting the technologies of LINE both in and out of the company. Also in charge of operations of LINE Developer Day 2016.
Hello, my name is Kushii. I work in the development department in Japan and I'm in charge of promoting technology events at LINE. LINE has quite a few development offices worldwide where many engineers write code every day. We have offices in Tokyo, Fukuoka, Fukushima in Japan and also in Korea, Taiwan, and Thailand. The Fukuoka office was relocated recently, and I think this is a good opportunity to introduce the brand new, upgraded working place for our engineers. The new office is located in
The Road to Releasing LINE Trial Bot SDK
Matsuno Tokuhiro(tokuhirom)2016-06-14
Fellow of the Business Platform Development
Introduction Hello, my name is Matsuno and I work at LINE. LINE BOT API Trial accounts were announced a few days ago, receiving a warm welcome from developers all over the world. Previously only available to developers working at companies who were under contract with LINE, now any individual developer can freely start developing their own project with their own LINE bot account.In this post, I would like to talk about why we decided to start development on a LINE BOT API Trial account SDK and h
- Open Source