👨💻 Sofware Engineer · 💬 Consultant · 🚀 Indie Maker · ⚡️ Serverless
🔧 serverless-appsync-plugin · serverless-appsync-simulator · middy-appsync
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May 10 · 4 min read · If you're on Spain's regulated electricity tariff (PVPC), timing is everything. Prices change every hour based on supply, demand, and energy source — meaning your dishwasher costs three times more to
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Feb 15 · 4 min read · In a previous article, I explained how to generate Amazon S3 pre-signed download URLs using AWS AppSync. But what happens when the file doesn’t exist yet? Sometimes the file must be generated on demand. Maybe it’s a report for a user-selected date ra...
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Dec 25, 2025 · 7 min read · One of the questions I’m most often asked by people new to AWS AppSync is: “How do I let my users upload or download files?” The short answer is: you can’t — at least not directly. While GraphQL is built on top of HTTP, it is not designed for transfe...
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Jan 21, 2025 · 3 min read · In a previous post, I explained how to connect AWS Step Functions to a private API Gateway endpoint thanks to the new integration with AWS PrivateLink and Amazon VPC Lattice. In this issue, I’ll show you how to use the same integration to use a priva...
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Jan 14, 2025 · 4 min read · At Re:Invent 2024, AWS announced EventBridge and Step Functions integration with private APIs. Thanks to this new feature, customers can now directly invoke APIs that are inside a private VPC from EventBridge (with API destinations), or Step Function...
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