Rails Flutter Iap Unimplemented Features Audit

Rails + Flutter App Unimplemented Features Audit and In-App Purchase Integration

While preparing to release a voice message-based social app, I performed a full audit of unimplemented features. There were quite a few cases where routes existed but controller actions did not, or the Flutter UI was complete but payment logic was blocked with // TODO. Here is the record of cataloging and implementing them one by one. How to Audit Unimplemented Features Backend Audit The fastest method is comparing routes.rb against the actual controllers. ...

2026-01-30 · 5 min read · Seunghan
Crypto Exchange Api Integration Lessons

Lessons from Integrating 5 Cryptocurrency Exchange APIs

Notes on the problems encountered while building a funding rate collection feature from multiple cryptocurrency exchanges in Ruby on Rails. Each of the 5 exchanges had different API behavior, and in some cases the official documentation didn’t match the actual behavior. Building a Common Base Client for Exchange APIs Before connecting multiple exchanges, I built a common HTTP client first. Used Faraday with retry and Circuit Breaker logic centralized here. ...

2025-12-06 · 7 min read · Seunghan
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