Namkyu Park

LitmusChaos

I'm a Gopher with a keen interest in cloud-native technologies. I contribute to an open source project called Litmus (a CNCF incubated project).

When I attend talks about the Go language, there's a common question I hear. "What can I do with the Go language?" In this session, we'll talk about why the Go language is a powerful tool for contributing to open source and introduce some cloud-native open source implementations in the Go language. We will utilize a demo application for a better understanding. Afterwards, I will introduce my experience of participating in various domestic and international programs that help people contribute to open source, such as 'Open Source Contribution Academy' and 'LFX Mentorship'.

Jungmin Kim

Samsung SDS

I work on k8s at Samsung SDS and use Go as my main language. I have 3 conference presentations under my belt. In this program, I would like to share my testing experience while developing the open source lethe/venti ( https://github.com/kuoss ).

Learn about testing-related packages (testing, testify, httptest). Discuss how to write test code (subtests, TestMain, naming/styling, black box testing), server mocking, and how to achieve 100% coverage. Share experiences on other testing-related topics (panic, goroutines, races, benchmarks, github actions).

Yongmin Kwon

AfreecaTV

I'm a backend developer who dreams of a secure and convenient network. I got started with Go because I was fascinated by how easily and quickly anyone can access the network, and how securely we can provide separate libraries for communication. Now I'm really interested in how we can make Go more productive.

This session takes a topic on the basic state management methods available in the Go language, combining the features of the currently released context package with upcoming features. Let's take a look at context types and see what they can be used for with a simple example!

Jinyong Kim

Looko

I work as a backend lead at Looko, a company that makes the global service Acloset. I'm passionate about how teams work together, communicate, solve problems, learn, and continuously grow.

We'll discuss what kind of project structure is advantageous for good test organization, how to write tests when there are external dependencies, and what tools you can use to help you.

Jaewan Park

AB180

I'm a Backend Engineer on the AB180 query engine team, working on Luft, a distributed OLAP database. I am interested in fast development and high execution performance.

This session will introduce how to use go tool pprof and go tool trace through practical examples gained from developing OLAP databases.

Chansik Lim

LINE PLUS

I work on operating the Kubernetes platform and developing operators for running high-performance workloads. I've prepared a talk to summarize and share how I use the eBPF tool to track applications developed in the Go language.

We're going to cover the basics of using eBPF tools to track applications developed in the Go language. This talk will take a quick look at the basic eBPF concepts and see how eBPF tools utilize them. Finally, we'll use these tools to trace inside a Go application and conclude the presentation by summarizing the possibilities and limitations.

Jungmin Choi

WhaTap Labs

Hello, I've been working as a DevOps engineer for about 2 years at a monitoring SaaS company called WhaTap Labs. I actively utilize Golang and Python in the process of creating tools for our operations.

I'll talk about how to access the /proc directory with Golang and develop server monitoring with kernel metrics. Since most monitoring tools are implemented in Java, a comparison will also be included.

Soobin Kim

VIVA REPUBLICA (TOSS)

I am Soobin Kim who is working as a server developer at VIVA REPUBLICA. I work on platform engineering to improve the development productivity of other developers in the team, and I'd like to share some of the best practices I've learned along the way.

I'll talk about our experience developing and deploying a serverless webhook service using AWS Lambda and Go after encountering issues with our existing architecture of webhooking events from a monolithic service.

Changhyun Park

Osmosis

I'm a Gopher who loves distributed systems, peer-to-peer networking, and blockchain. currently works in blockchain engineering at Osmosis, developing consensus algorithms and open source frameworks for creating Proof-of-Stake blockchains. I've put together a talk for high-language developers called "How to write bug-free programs: from a testing perspective, but now with blockchain." I'd like to share the secrets of writing bug-free programs. --＝＝(/･_･)/==≡≡卍

It's often said. There is no such thing as a bug-free program. In this session, I'd like to show you how to create a bug-free program.

Jaewon Kim

AB180

I am the Data Pipeline Team Lead at AB180. The team relies heavily on Go, Kafka, and other technologies to process large amounts of data reliably and efficiently.

- We'll take a quick look at our experience migrating a large legacy system from Python to Go to take advantage of performance, strongly typed languages, and more. - Also share the strategies, tools, and more we used to develop our automated testing tool Scenario Tester in Go, which played a big role in validating the migration. - Fianlly we'll treat some of the roadblocks we encountered along the way.

Lars

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I'm a 3rd-year developer with a strong interest in distributed systems. I mainly focus on server development. I have presented at PyconKR four times from 2018 to 2021 and at PyconJP 2020. For Golang, he presented once at Golang Korea MeetUp in Seoul in 2019.04.

Golang adopts GC with Concurrent Mark and Sweep. In this process, the main goal is to reduce Stop The World to reduce latency. To achieve this goal, we are making many efforts such as removing the gc assist goroutine for sweep and making the mark step one. The session describes these efforts and show how they are beneficial.