Preventing Flaky Tests and Brittle Tests
Flaky tests and brittle tests are two common pitfalls that make our tests unreliable and hard to maintain. In this post, I will illustrate these concepts wit...
Recent posts
Provision an Amazon EKS cluster with AWS CDK
Amazon EKS (Elastic Kubernetes Service) is a fully managed Kubernetes service that simplifies building, securing, operating, and maintaining Kubernetes clust...
Memory Profiling CPython Applications with Memray
Memory management in modern programming languages is well-abstracted away from programmers. We do not have direct control over how our programs allocate and ...
Explaining the One-Version Rule and Monorepos in the context of Microservices
The organization I am currently working at develops applications built on microservice architecture, and we were trying to follow the internal policy that th...
Property Based Testing with Hypothesis
What is Property Based Testing? Property based testing, which is known to be originated by QuickCheck, is a testing technique which randomly generates test c...
Win 1st Place at AWS GameDay 2023 in Seoul
On April 14, my teammates and I participated in AWS GameDay 2023 and took 1st place. (team name: justintime @buzzni)
Configuring GitOps with GitHub Actions and Argo CD
In this post, I am going to share my experience of configuring GitOps for a continuous deployment process. (FYI, you may refer to the following content for c...
Scheduling
A CPU scheduler is an operating system module that decides which process in the ready queue is allocated a CPU. It checks all of the tasks in the ready queue...
Thread Design Considerations
Thread Data Structures A user-level threading library has its own user-level thread data structure to represent threads in order to schedule and synchronize ...
Building a Serverless Function using Amazon API Gateway and AWS Lambda
This post is a quick tutorial to build a very simple serverless function using Amazon API Gateway and AWS Lambda.