Ryota-Blog

A dual-income married couple (no kids) shares the household money system they built over three months, in interview format. SBI Sumishin Net Bank's purpose-specific accounts and auto-transfers, automatic Rakuten Card statement collection, and logging cash with a single LINE message. An engineer's 'minimum running cost' approach to household finances.

What is Hitooshi? A former user neutrally explains how the service works — the matchmaking planner who hand-picks two introductions a month, the five steps from applying to meeting someone in person, and who the service suits and does not suit.

A step-by-step guide to applying a custom SSL/TLS certificate (issued by a CA of your choice) to an AWS Amplify Hosting custom domain. Covers CSR creation, chain construction, integrity verification, Terraform configuration, post-deployment verification, and expiry monitoring — written so junior engineers can follow along.

Complete solution guide for CloudFront + Next.js image optimization error. Solve "url parameter is not allowed" error with AllViewerExceptHostHeader policy, detailed debugging steps, and implementation examples for AWS App Runner integration.