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LHidalgo.dev

💻 Full Stack Software Engineer and ☁ Serverless Developer, focused on building efficient and cost-effective applications using cloud-based technologies

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[Video] DynamoDB for Relational People - AWS Community Day Turkiye 2025

https://www.youtube.com/watch?v=H873D6t0D9k Video Description Having worked closely during the last years implementing and fixing DynamoDB implementations, I've been able to see some recurring errors and misunderstandings, and the root cause in mos...

How to Create a URL Shortener with Custom Analytics using AWS Services

TL;DR; This article covers how to implement a basic URL Shortener API with Custom Metrics. The sample project implements a Serverless Solution, deployed with the help of AWS CDK that relies on API GateWay, DynamoDB, Lambdas and Custom Cloudwatch metr...

DynamoDB Common Mistakes and how to fix them

TL;DRThis article provides a brief introduction to DynamoDB and the key differences between SQL and No-SQL databases in order to better understand the common mistakes and how to fix them. Feel free to skip to the Key takeaways section to read the mos...

Mastering DynamoDB: Batch Operations Explained

TL;DR; This article covers the usage of DynamoDB BatchWrite and BatchGet operations, and how implementing them can help you improve the efficiency by reducing the amount of requests needed in your workload. Introduction Have you ever developed any t...

[Webinar] DynamoDB - Common mistakes and how to optimize usage

https://www.youtube.com/watch?v=p4K1L4kJcJs This webinar briefly introduces DynamoDB, the most relevant differences between SQL and NoSQL Databases, the most common mistakes when interacting with DynamoDB, and how to solve them.

[Video] What does a Software Engineer in the Cloud actually do? | Working in the cloud ☁️

https://www.youtube.com/watch?v=0EXGfdt_ZqQ Video Description Three cloud software engineers, Danielle Heberling, Ian McKay, and Lorenzo Hidalgo, provide an in-depth look at their roles and responsibilities, key tasks, and the challenges they face ...

Enhance Your AppSync API Development: Easy Steps to Auto-Generate Postman Collections

TL;DR;This article covers how developers can take advantage of the serverless-gql-generator plugin for Serverless Framework to automatically generate new Postman Collections or Raw Requests for an AppSync API. Introduction A few weeks ago, I announc...

Unlocking the Power of DynamoDB Condition Expressions

TL;DR;This article explores DynamoDB condition expressions, highlighting their potential to enhance database operations. They help prevent accidental data overwriting and facilitate conditional updates. The article also details how to handle errors e...

[Webinar] Building Our Own AI Chatbot: Making Santa

https://www.youtube.com/watch?v=300YgXGADH8

Building Our Own AI ChatBot: Making Santa

Introduction Serverless Guru has organized a Serverless Holiday Hackathon where participants compete during the first half of December 2023 to see who can develop the best holiday-themed chat application that uses any LLM. As part of the Hackathon or...

[Webinar] Building Your First Serverless API with Langchain

https://www.youtube.com/watch?v=o2f1oCbqSpI

AWS AppSync Subscriptions: Detaching Prolonged Operations

TL;DR: This article discusses how to use AppSync Subscriptions to decouple long-running tasks from front-end requests in a serverless chat application. It provides a step-by-step guide to implement this solution, including an architecture overview, d...

[Webinar] Serverless Holiday Hackathon - LLM Crash Course

https://www.youtube.com/watch?v=QHaQB-9Vf9k

[Webinar] Serverless Holiday Hackathon 101

https://www.youtube.com/watch?v=h3yvOk9V8dU

Getting Started with AppSync JavaScript Resolvers: Basic Setup

TL;DR: This article provides a step-by-step guide to setting up a new AppSync JS Resolvers project, including ESLint configuration, unit testing, and debugging. Learn how to use the AWS CLI command for testing resolver code, understand AppSync logs, ...

Using AWS X-RAY to improve Serverless performance

Building high performance serverless applications can be tough, but a service like AWS X-Ray will help you understand your AWS Lambda application code better, slow DynamoDB queries or HTTPS requests, and then track how your changes improve over time....

Mastering the Basics of AppSync JS Resolvers: A Quick Start

TL;DR; This article provides an overview of the basics of AppSync APIs, including the recommended stack of Serverless Framework, Serverless AppSync Plugin, and GraphBolt. It explains the structure of resolvers, the use of ctx and stash objects, size...

[Webinar] Serverless Panel ¡En Esapñol!

https://www.youtube.com/watch?v=3lVOx1gKi-0