This document outlines an agenda for a meeting on Ruby on Jets. The agenda includes introductions of the team, features of Ruby on Jets, the serverless architecture, Protractor testing, lambda functions in Unioncloud, installing and implementing Ruby on Jets, and a demonstration. The document provides information on serverless computing with Platform as a Service (PaaS) and Function as a Service (FaaS). It also discusses advantages of Ruby on Jets like local server testing, database support, and deployment handling.

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QuArrk – COP RoR

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• Wait only for a minute to start the meeting​
• Keep yourself on mute unless you are presenting​
• Keep your video disabled​
• Raise your question on meeting chat​
• ​Record the meeting
Meeting – Etiquette

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 Team
 Features
 Architecture
 Protractor
-Introduction
-Lambda functions in UC
-Architecture
-Installation
-Implementation
-Demo
 Q&A
Agenda

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The Team

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 What Is Serverless?
Introduction

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 PaaS (platform-as-a-service)
Introduction

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 FaaS (function-as-a-service)
Introduction

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 A simple application that helps us to manage our tasks. We can
imagine this simple application with a three-tier architecture:
Introduction - Serverless Architecture

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 Here we’ve decomposed our simple application into individual
functions to work with the tasks.
Introduction - Serverless Architecture

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 Platform Limitations
 Application Limitations
Introduction - Challenges

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Lambdas in UC
How UC is tightly coupled with lambda
List of lambda services
1) Image processing service
2) unioncloud ticket inbound service
3) unioncloud ticket outbound service
4) Sendgrid connection

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Architecture

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 Local Server: A server which mimics API Gateway that allows you to test locally.
 Jets Call: Remote and local testing of the functions directly.
 REPL Console: A REPL jets console that allows you to test things out in an interactive
shell quickly.
 Database Support: Supports ActiveRecord based databases, PostgreSQL currently,
and DynamoDB.
 Polymorphic Support: Ability to write your lambda functions in other languages like
python or node for certain uses cases.
 Function Properties: Allows you to set Lambda function properties application-wide, at
the class-level, or individually at the function level.
 Deployment: A deploy command that handles the mundane task of packaging and
deploying your code to AWS Lambda.
Advantages

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 Install Ruby on Jets
gem install jets
 Create the Ruby on Jets application
jets new hello-world --database=postgresql –mode html
 Start the Ruby on Jets server
jets server
Installation

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Implementation

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Project Skeleton Structure

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controller handles a web request and renders a response

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controller web request

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DEMO

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