Jan 15Cloud Practitioner: SecurityThis is the sixth module in the series of documents that helped me pass the “Cloud Practitioner” certification. You can find the other modules here: Introduction to AWS [Link] Compute in the cloud [Link] Global infrastructure and reliability [Link] Networking [Link] Storage & Database [Link] AWS shared responsibility model AWS is responsible for the…AWS6 min readAWS6 min read
Published in AWS Tip·Dec 17, 2022Cloud Practitioner: Storage & DatabaseThis is the fifth module in the series of documents that helped me pass the “Cloud Practitioner” certification. You can find the other modules here: Introduction to AWS [Link] Compute in the cloud [Link] Global infrastructure and reliability [Link] Networking [Link] Instance stores Block-level storage volumes behave like physical hard drives. An…AWS7 min readAWS7 min read
Dec 8, 2022Interview excercise: Replicate .map() with two functionsI recently had a technical interview for a Senior position were I had to code, among other things, the function array.map(). In this post we will go through the excercise and how to solve it without going straight to the answer. If you want to know more about the .map()…Java Script3 min readJava Script3 min read
Published in AWS Tip·Nov 21, 2022Cloud Practitioner: NetworkingThis is the fourth module in the series of documents that helped me pass the “Cloud Practitioner” certification. You can find the other modules here: Introduction to AWS [Link] Compute in the cloud [Link] Global infrastructure and reliability [Link] Amazon Virtual Private Cloud (Amazon VPC) A free networking service that you can use to establish boundaries…AWS5 min readAWS5 min read
Published in AWS Tip·Nov 10, 2022AWS: How to upload to an encrypted S3 in a different accountUploading a file to a S3 bucket is a very common functionality that many of us implemented. In some cases the easiest (and best) option is to generate a presigned URL (check this other post for more information: What are presigned URLs). In other cases we have to upload the…AWS3 min readAWS3 min read
Oct 29, 2022Cookies vs Session storage vs Local storageMany of us talk about this user side storage options but usually we don’t know the differences. So in this document we will try to clarify one of the most common frontend interview questions. We all know that all three options are client side solutions for storing data in the…Java Script3 min readJava Script3 min read
Published in AWS Tip·Oct 2, 2022AWS: What are presigned URLsIn this post we will talk about the presigned URLs that we can generate for managing objects inside an AWS S3 bucket. We will cover topics like what are these URLs for, who can generate them and how do we use them. What are presigned URLs for All buckets are private by default and even…AWS4 min readAWS4 min read
Aug 12, 2022Cloud Practitioner: Global infrastructure and reliabilityThis is the third module in the series of documents that helped me pass the “Cloud Practitioner” certification. You can find the other modules here: Introduction to AWS [Link] Compute in the cloud [Link] Selecting a Region Compliance with data governance and legal requirements: Depending on your company and location, you might need…AWS3 min readAWS3 min read
Published in AWS Tip·Jul 29, 2022Create an API with AWS & SAMIn this post we are going to create a new application that consists of an API which has one simple enpoint developed in NodeJs and has a S3 bucket. All the infrastructure of this project will be created automatically using SAM (AWS Serverless Application Model). Prepare the environment The first step is to…AWS4 min readAWS4 min read
Jul 19, 2022Twitter bot that listens to keywordIn this project we will create a new NodeJS application that is connected to a Twitter Developer account, and it listens to a keyword which, every time is used in a tweet, triggers an event. Code Lets start by creating a new NodeJS project using npm init in an empty directory…Twitter3 min readTwitter3 min read
