Going SERVER⚡LESS
AMA
- I'm a 🤓 @Asiance
- I love 🕸 technology
- I'm a 🐧 (Ubuntu) user
- I'm also doing 👊 (boxing)
- I miss 🧀
N-Tier architecture
The classic client–server architecture in which presentation, application processing, and data management functions are physically separated.
Source: wikipedia.org
N-Tier representation
Source: https://aws.amazon.com
N-Tier limits
- Scalability
- Deployment
- Price
N-tier might be good for large projects but doesn't always fit everyday's apps or moderate budgets.
In short...
Serverless architecture
It doesn't mean no more servers but rather focusing on your code as a developer. It's a new way to build apps, FaaS way.
Functions as a Service
Break your app into micro services, or functions, that are called from your API.
Serverless representation
Source: https://aws.amazon.com
Serverless pros
-
Scalable
-
Affordable
-
Less setup/maintenance
-
Embrace component logic
In short...
The serverless architecture is great, but deploying it from A to Z might be a tedious task as it involves a lot of web services.
Serverless Framework
Allows you to deploy auto-scaling, pay-per-execution, event-driven functions to any cloud. Supporting AWS Lambda, Azure functions, Google CloudFunctions, etc.
Source: https://serverless.com/framework/docs/
A CLI tool
The serverless framework comes with a CLI tool. You can use it to create, test, push, delete, customize (etc.) your service.
Events & resources
The framework deals with events (e.g. operations on a S3 bucket) and resources (e.g. a DynamoDB stream) to trigger or bind your custom functions.
A configuration file
To describe your environment, simply write a few lines of code in a .yml file. You can define the stage of your service, the region where it runs, the resources and the events it uses, etc.
Writing the code
The second file that is generated by the framework is called handler. It basically lists all the functions of your API and describes your backend logic.
Demo time!
Links & contact
-
Getting started with serverless architecture and AWS
-
Serverless Framework documentation
Serverless architecture
By Jean-Loup Trolliard
Serverless architecture
Meetup
