Architecture Improvement Through @ControllerAdvice
Logic that queries currently logged-in user information and puts it in the model for each controller method causes code duplication and reduces maintainability. It also becomes a potential cause of NullPointerException that can occur when non-logged-in users access.
To solve ...
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Flexible Response Structure Design and Profile Management Feature Implementation for Improved User Experience
To increase service scalability and maintainability, we improved the common response object and implemented profile image management functionality where users can directly express their identity. We share technical solutions encountered in this process.
Common Response Object...
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Someones Interests Seem Related To Their Deficiencies
Someone’s interests seem related to their deficiencies. When worried about the future, I pick up self-help books, and when my heart feels empty, I take out unfinished novels.
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View Count and Permission System Improvement
The platform ‘Muje’ focusing on the essence of records has been analyzing user usage patterns since official launch and focusing on improving system stability and data reliability. Particularly in this update, we share the process of overhauling the ‘view count’ calculation me...
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Logic Improvement for Consistent User Experience and Data Integrity
Muje aims to be a platform that respects users’ diverse personas and preserves the value of records. As the service grows, existing fragmented logic increases maintenance complexity and sometimes causes results different from user intent. We would like to share the technical p...
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Search Feature Implementation and Service Stabilization Journey for Official Muje Deployment
The Muje project officially deployed its version today. We would like to share the technical challenges faced and the resolution process while improving service completeness utilizing Spring Boot-based technology stack.
1. Search System Design and Implementation as Core of Us...
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Improving Post Management Interaction and Abstracting Frontend Logic
While developing the blog project Treeed, we enhanced the post management function, which is the core of user experience (UX). We share the process of securing code maintainability through dynamic UI updates via asynchronous communication and externalizing common logic, depart...
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Out Of Memory Resolution
Ensuring Stability of Spring Boot Service in Low-Spec Container Environments
While cloud environment development has made service deployment easy, maintaining application stability within limited resources remains an important challenge for engineers. Particularly, the approx...
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Improving Frontend Maintainability Through UI Component Integration
As service scale grows, maintaining consistency of UI components exposed to users becomes an important challenge for developers. Particularly when post cards are repeatedly used across various pages like blogs or SNS, fragmented management logic can incur enormous costs even f...
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UI Redesign Using Thymeleaf Layout
Introduction
This project started with the request to “write custom CSS only for difficult parts with Bootstrap.” I would like to share the experiences and solutions encountered while completely renewing the legacy UI to a modern SNS style.
Problem Situation
The existing bl...
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Environment-Specific Configuration Management with Spring Boot Profiles
Overview
One of the most troublesome problems when developing multi-environment applications is how to manage environment-specific configurations. Database addresses, cache policies, logging levels, etc., must all differ for development, staging, and production environments.
...
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Social Reference
https://dribbble.com/shots/16842379-Social-Feed
https://dribbble.com/shots/27002130-Vibe-Coding-Website-Design-Landing-page
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Building Image Upload and Automatic Cleanup System with Cloudflare R2
Introduction
Image upload functionality is essential in web applications, but if not managed, unused files accumulate in storage, increasing costs and management burden. Particularly, how to handle connected images when users upload images and then cancel post creation, or wh...
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Security, Maintainability, and Concurrency Control
In this article, I share the refactoring process undertaken to elevate project quality to the next level. From encryption work to securely protect database access information, to modularization that eliminates duplicate frontend code, and methods for handling concurrency contr...
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Deploying with Railway and Implementing Like Feature with Concurrency Control
1. Deploying Spring Boot Application and Resolving Database Connection Errors
In the early stages of the project, we selected the Railway platform for deployment convenience. We built an automated deployment system based on Dockerfile, but encountered a JDBCConnectionExceptio...
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Log Levels
In software development and operations, logs serve as key indicators for understanding system status and diagnosing problems. Indiscriminate logging can cause system performance degradation and storage space shortages, while insufficient logging makes incident response difficu...
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