LINE Securities: Page Stack revisited

2 years ago I posted an article about why and how we achieved Smooth page transition with Page Stack. We adopted this approach for LINE Securities, and pushed it a little further. In this article, I am going to show you what we have done to improve it, and also what problems we are currently facing. Header …

【Team & Project】Meet the Team Developing the Verda Platform Using OpenStack and Kubernetes

「Team & Project」 takes a look at different departments within LINE’s development organization and introduces their roles and team structure, tech stacks, challenges that lie ahead, roadmaps, and more.
In this edition, we sat down to chat with members of the Verda Platform Development Team. Part of the Verda Department which in turn is under the IT Service Center (supervises all infrastructure), the team works on development for the Verda Platform.

Verda Platform Development Team at the zoom meeting

Who murdered my lovely Prometheus container in Kubernetes cluster?

This blog post is about an interesting experience I had while investigating and resolving a problem that happened in the Prometheus container which was still in the CrashLoopBackoff state. The phenomenon itself and the solution are obvious and simple; so simple that you may feel that it is not worth it to spend time on …

High-throughput distributed rate limiter

Production-grade systems usually consist of multiple interconnected components that depend on each other. Popularization of the microservice architectures in recent years has led to an increase in the number of components and their interconnectivity. To protect each component from overloading and guarantee overall system quality of service, rate limiters can be used. Many articles and …

Keeping up with ever-changing web development trends

Web Directions, a conference founded by John Allsopp and Maxine Sherrin in 2004, covers all facades of web and digital professionals such as web design, front-end and back-end development, information architecture, interaction design, product design, accessibility, product management, and other interesting topics. Most of the conferences have been held in Australia with the Web Directions …

A new challenge for LINE Timeline – 1

A feature called “Discover” and a new subscription model called “Follow” have been added to the LINE Timeline service. Although users are familiar with these features, we ended up writing this post because we wanted to share the parts that we had considered and made efforts on within these features. Starting with this introduction, we have planned a three-part series to bring you more detailed information.

How we developed and integrated ‘share’ module into LINE app – 2

In Part I, we defined the following six categories to share our experience, difficulties and solutions of the Share module development for LINE iOS and covered the first two categories.
In this Part II, we will cover the remaining four categories. We will continue our story with the thinking process we went through to implement a structure for easier maintenance and expansion, on top of meeting various requirements for many LINE services.

How we developed and integrated ‘share’ module into LINE app – 1

Hi, there! We are Hyeonji Jo and Keonhong Lee, responsible for LINE iOS client development. Here we’d like to share our experience during the development of the Share module development on LINE for iOS, focusing on the difficulties we faced and how we overcame them.

Let’s Play with Reactive Streams on Armeria – Part 1

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 …

How LINE messaging servers prepare for New Year’s traffic

This post is the result of the combined efforts and work of many. We’d like to thank all of you who were involved in preparation for New Year’s traffic. Getting started LINE shows a unique traffic pattern typical to online messaging apps. This happens at the midnight of December 31st when users start to share New …