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Serverless apps have been around for a while, but they became mainstream around 2014 when AWS introduced Lambda. Despite the name, serverless apps do run on servers — they’re just managed by a cloud provider such as AWS. This frees you to focus on coding your app logic. Another benefit of serverless apps is their ability to run in response to events and bill you only when they run. The Serverles..

Setting Up An Express Server To get started working with a Node.js project you will need to run npm init -y. This will create a basic package.json file with all of the default values filled in for you. From there the next thing to do is install Express by running npm i express. Lastly, we need to create a server.js file with the following code. const express = require('express') const app = expr..

For Every new ticket git checkout -b [name of the branch] - Make pull requests - Make a new branch See Commit History Refactor to do it in a functional way. Persisting state to the module Global Map Instead of making state >> state relative to its state (Make them functional) the entire object just depends on the input. remove global variables functional testings (Knows what's passed) make them ..

Docker overview Docker is an open platform for developing, shipping, and running applications. Docker enables you to separate your applications from your infrastructure so you can deliver software quickly. With Docker, you can manage your infrastructure in the same ways you manage your applications. By taking advantage of Docker’s methodologies for shipping, testing, and deploying code quickly, ..

Docker Short answer: lightweight linux VMs Long answer: Docker is a system for building and running Containers You can think of them as small containers Containers instead VMs? Portable Development environment can be guaranteed to behave like your production environment Scalable Cloud providers can quickly add or remove more containers to meet demand Lightweight You only run what you need to Com..

What if we could bundle all our application code, support binaries, and deploy it to our servers Docker focuses on: Build Image Ship Image Run Image Docker leads to: CI/CD Different Versions Roll Forward When we find defects >> developers can fix them easily Docker Configuration (Runs same environment) FROM The first thing to add dependency alpine language of lambda ENV Setting ENV variables COP..

Lambda - Run my code ECS - Runs my Container (Amazon's way of running containers) - Container has codes in it - There are more robust than we can add things - They can run multiple languages - It's more configurations and more complex Containers - More powerful than Lambda - Tasks (Worker) >> Logs, Networking, Tags Extra Info: VM Fulsions(Running Windows in MAC) - Virtural Machine MICRO VM - Tak..

ConvertFileType Step Squares (Parallel Tasks) one of more execution of this file AAC >> MP3 (Convert it) Write some integration tests for that Test the whole containers src/workflow/create-derivative-assets ECS >> Amazon Containers Dockerfile >> ENTRYPOINT transform.js download the file and upload it to MP3 Docker Util File HardCoded Environment Variable and pull them in Docker Test the entire c..

Overview The document client simplifies working with items in Amazon DynamoDB by abstracting away the notion of attribute values. This abstraction annotates native JavaScript types supplied as input parameters, as well as converts annotated response data to native JavaScript types. Marshalling Input and Unmarshalling Response Data The document client affords developers the use of native JavaScri..

Map The Map object holds key-value pairs and remembers the original insertion order of the keys. Any value (both objects and primitive values) may be used as either a key or a value. Description A Map object iterates its elements in insertion order — a for...of loop returns an array of [key, value] for each iteration. Key equality Key equality is based on the sameValueZero algorithm. NaN is cons..