Blog - LINE ENGINEERING

TAG ARCHIVES: Open Source

Behind the scenes: LINE's OpenChain certification and improved open source management
LINE Open Source Program Office TF2023-09-27
We create LINE's OSS policy and culture.
Hello, we are the Open Source Program Office TF. The Linux Foundation operates the OpenChain project, which sets the standard specifications for open source management. For about two years, we have been running a large-scale project to apply the standards set by the OpenChain project to LINE. As a result, we have received certification for compliance with ISO/IEC 5230, the international standard for open source management. In this post, we'll first introduce what the OpenChain project is, a
- Open Source
LINE Open Source Sprint 2023: Contributing to your favorite open-source project during work hours
Donghyeok Kim, Jina Kim, and Seoyeon Lee2023-04-21
Runs open source operations at LINE
Introduction Hello from Donghyeok Kim, Jina Kim, and Seoyeon Lee. We are in charge of open source management at LINE and are currently working in the Developer Relations team and the Open Source Program Office TF to bring LINE's development culture closer to the open source development culture. In 2021, we introduced the LINE Open Source Sprint event in the article below. In this post, we'll share the process and results of LINE Open Source Sprint 2023. LINE Open Source Sprint 2021: Promo
- Open Source
【Internship Report】 Development of log analysis pipeline using Spark streaming
Ryosuke Unno2022-11-24
My name is Ryosuke Unno. I participated in the LINE internship program in the summer of 2021. As a university student, I study the application of reinforcement learning in video games. During this internship I joined Data Engineering Team 3 of the Data Platform Department. In this article, I'll introduce the activities I was engaged in during this internship period. Background and issues Currently, the Data Platform Department operates large-scale Hadoop clusters which offer over 300PB of disk c
Kotlin JDSL: Let's use Kotlin to easily write reactive Criteria API
Hyunsik Kang2022-09-08

This is the second post in a series about Kotlin JDSL. In the last post, Kotlin JDSL: Writing JPA Criteria API more easily with Kotlin, we looked into the background of why we developed Kotlin JDSL and how we use it. In this post, we'll be looking at Kotlin JDSL Reactive modules. While many of you might have a preconceived notion that JPA cannot be reactive, Hibernate released a reactive JPA library called Hibernate Reactive. If you would like to know more about reactive programming,
- Server-side
- Open Source
Kotlin JDSL: Writing JPA Criteria API more easily with Kotlin
Jonghyon Seo2022-08-25
Jonghyon is a commerce platform engineer at LINE.
Hello, my name is Seo Jong Hyon and I'm part of the Global EC (Global E-Commerce, GEC for short). The GEC mainly uses Spring as its server framework, and JPA as its ORM technology. We've so far used the query method provided by Spring for simple queries and a combination of JPA Specification and Criteria API for more complex queries, but both libraries have some inconveniences. We started work on developing a library that does not have these inconveniences, and this library
- Open Source
LINE as Apache Software Foundation's Silver sponsor
LINE Open Source Program Office TF2022-03-29
We create LINE's OSS policy and culture.
We at the Open Source Program Office TF are finding many ways of cultivating a culture where LINE engineers and open-source ecosystems come together in a close relationship. In this post, we would like to highlight one of those many efforts: How LINE became a Silver Sponsor for the Apache Software Foundation. About the Apache Software Foundation The Apache Software Foundation (ASF) is an American nonprofit organization founded in 1999 for the purpose of providing
- Open Source
- LINE Sponsorship
LINE Open Source Sprint 2021: Promoting open-source contribution
LINE Open Source Program Office TF2022-03-28
We create LINE's OSS policy and culture.
We at the Open Source Program Office TF are working diligently to close the distance between LINE's development culture and open-source development culture. With how many of LINE's developers are dependent on open-source software, many of them may have had one of the following thoughts at some point: "One of these days I should really try contributing to an open-source project..." Followed by another thought: "But I don't even know where I should start!" As we are well aware that many devel
- Open Source
- LINE Events
FIDO at LINE: FIDO2 server as an open-source project
Kyungjoon Park2021-10-07
Kyungjoon is an engineer on the Security R&D Team.
Hello, this is Kyungjoon from the Security R&D team. I work as a FIDO (Fast Identity Online) engineer. Continuing from our last post FIDO at LINE: A First Step to a World Without Passwords, I would like to introduce you to FIDO2, and also share my experiences from participating in the interoperability testing event hosted by the FIDO Alliance earlier this year in March. Lastly I will talk about our very own LINE FIDO2 server, which will be made available as an open-source project. Introduc
- Security Engineering
- Open Source
Let's Play with Reactive Streams on Armeria – Part 2
Ikhun Um2020-07-03
Ikhun is developing for open-source Armeria and Central Dogma at LINE Plus.
In the first part of this blog post, we took a look at the basic concepts of Reactive Streams. In part 2 of this blog post, I'd like to tell you about how we use Reactive Streams with Armeria. What’s Armeria? Armeria is an open-source asynchronous HTTP/2, RPC, REST client/server library based on Java 8, Netty, Thrift, and gRPC. While Armeria is a lightweight microservices framework, its capabilities is comparable to existing full stack web frameworks. Let's first take a look at so
Let's Play with Reactive Streams on Armeria - Part 1
Ikhun Um2020-05-06
Ikhun is developing for open-source Armeria and Central Dogma at LINE Plus.
What is Reactive Streams? In this post, I'd like to introduce the basic concept of Reactive Streams, and how to use Reactive Streams with Armeria, the open-source asynchronous HTTP/2, RPC, REST client/server library. Let's begin by examining what Reactive Streams is. The official homepage of Reactive Streams defines it as follows. Reactive Streams is a standard for asynchronous data processing in a streaming fashion with non-blocking back pressure. Let's take a closer look at wh

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