I'm Jiun Seo.

OurPlant

Planterior information sharing web service that pursues an eco-friendly lifestyle.

In the case of planterior, there is a large amount of information that is required. Because not only simple interior information but also information about plants must be considered. However, the existing interior information sharing service could not collect plant interior information separately and could not find them together.

OurPlant is a community web service specialized at planterior and it actually deployed and operated for six months. It mainly features sharing interior information / searching plant information / Q&A bulletin board about gardening / like and follow.

My Role

Team Leader

Planned Project and Designed Architecture

Established Project Development Tasks and Roadmap

Built Wireframe

Collected Plant Data Using Crawling

Developed Automatic Search Completion and Image Lazyload using JQuery

Developed KakaoTalk Sharing Feature using JavaScript

Developed Automatic Logout

Deployed the Application and Managed Server and Database (AWS EC2, RDS)

Managed Domain connection

Created and Managed Domain Mail (AWS SES)

Main Development Issue

At the time of the first trial deployment, we received the domain from 'Freenom' for a free domain, but a problem occured in the process of purchasing and reconnecting the paid domain from Gabia. At first, I had a hard time because I didn't know why I couldn't connect the domain. I thought there was a problem with the NginX server file in the process of analyzing the server. As a result, we discovered that the problem was that the https certificates of the two domains have been collided in the process of disconnecting the existing domain and connecting the newly purchased domain. When we deleted the existing certificate and repositioned the new certificate correctly, the domain was connected successfully.

CareShare

Medical aid sharing platform for the disabled and the elderly (23rd E-Daily Economic Universiade winning project)

As of 2020, the number of registered disabled people is 2.62 million, and as of 2021, the number of elderly people aged 65 or older is 8.53 million. This is the reality of our country now. Most of them need medical assistive devices for their daily lives, but due to the high price range of medical aids, many people need support to use them. However, there are many people who are not getting medical aids support service because they do not know how to apply.

CareShare is a platform designed for them. It aims to reduce the financial burden of using unused medical aids by renting, sharing, and trading. It also includes functions such as collecting information about medical support services and comparing prices of medical aids on the market.

My Role

Team Leader

Planned Service and Designed Architecture

Developed Membership Registration and Modificated Membership Information

Developed General Login and Google Login

Senapul

Mobile app for managing gardening logs (9th conference of TAVE winning project)

Recently, as external activities have decreased due to COVID-19, interest in pets and pet plants has increased. However, it was difficult to raise plants because they has different water cycles and care precautions depending on the plant type.

Senapul remembers the watering cycle for each plant and sends a notification to user when to water the plant. It also developed to help plant keepers with the ability to write and manage plant diaries and share them with other users.

My Role

Team Leader

Planned Project and Designed Architecture

Established Project Development Tasks and Roadmap

Built Wireframe

Wrote API Statement

Developed Like/Unlike Feature and Membership Withdrawal Feature

Developed Plant Diary Discovery Feed

Main Development Issue

If you send a client request, the server sends you a response. At this time, the value returned by each function in the server is different, so the format of the response sent to the client is all different. But as I developed it, I felt the need of unify their format. In addition, since the response format and response code were not customized, http response of 200,400,500 were basically sent, so there was no way for us to know what the actual problem was. To solve this problem, we created an exception package and created an Enum class called ErrorCode and an ErrorResponse JAVA class. In the case of ErrorCode, it is a class that contains the response code that we customized, and we have assigned the response code that we had promised for various cases such as no token or invalid or incorrect input values. And in the case of Error Response, it is a class with a response format set, and all responses had transmitted in the class format.

OpenMap

Web service that shows the status of restaurants, cafes, and hospitals around users.

OpenMap is a project conducted while I was taking the "Server System Construction and Practice" course in the spring semester of 2022 at Sungshin Women's University. Until now, the map services has shown companies near the user, but it was difficult to users to immediately recognize whether the company is opened or closed.

OpenMap shows the companies near you, but also the marker colors are different for each company that is open, holiday, and closed. Other features include registering favorite companies and searching with filters.

My Role

Team Leader

Planned Project and Designed Architecture

Established Project Development Tasks and Roadmap

Built Wireframe

Collected Company Data Near Sungshin Women’s University from Public Data Portal

Connected Kakao Map API

Developed Search Filter and View of Business Detail

Developed MyPlace Registration Feature and Custom Markers by Business Hour

Main Development Issue

"OpenMap" is a map service that displays the location of restaurants, rest restaurants, and hospitals near you differently depending on the current business status. DB queries had become quite complicated because markers were vary depending on the company's type and business status, rather than just displaying markers at the company's location. As each company has different business days, business hours, and breaks, so the queries had become complicated. In addition, each time a user changes the area of the map, the company displayed on the map changes, the amount of query has become significant. Also, the speed of service has become slow. For queries that returns the business status of a company, it became simplified by creating View tables and Raw queries in Sequelize migration files. In addition, we adjusted the unit of event occurrence to solve the server load caused by queries which had generated by users changing the map area. For example, in the past, if a user had generated an event by clicking the mouse, it could be modified to generate an event only when dragging the mouse. As a result, the query generation had reduced and the service speed had improved more than 50%.