# Cloud Functions
- is a serverless framework that lets you automatically run backend code in response to events triggered by Firebase features and HTTPS requests.
- events
- did user log in for the first time, send them a welcome email
- Did user enter a new value, update it into DB via function
- did user update photo, manululate, resize, add filter all on Cloud
- Cloud messaging, send messages to friends
- Each function runs in isolation, in its own environment with its own configuration.
- Auto-scaling default, no need to worry about holiday time
- Functions are written in either javascript or Typescript
- TypeScript supports latest JavaScript features like async/await, simplifying promise management
- All typescript files are compiled to plain javascript and saved in
libdirectory
Webpack serves an important job. It bundles all the scattered Typescript’s modules/files and bundle them into a single index.js Javascript file. This is important because the Cloud Functions will only use that single file for deployment.
How to make use to async/await syntax in typescript or ECMA acript 2017 to write better, safer coould functions
- async
- javascript promise
- await
- wait for promise resolve or promise fail
deployed URL https://us-central1-named-messenger-MY_PROJECT.cloudfunctions.net/helloWorld
firebase login
firebase init functions
tree functions/ -L 1
functions/
|-- node_modules
|-- package.json
|-- package-lock.json
|-- src
|-- tsconfig.json
`-- tslint.json
# Providers
Cloud Functions is a serverless execution environment for building and connecting cloud services.
- Google Cloud Functions
- NodeJS
- Python
- Go
- Java
- Firebase Cloud Functions
- Javascript
- Typescript
Serverless Functions are kind of webhooks
| FREE Features | GCF | FCF |
|---|---|---|
| Invokations | 2,000,000 /month | 125,000 /month |
In addition to the 2 million invocations, the free tier provides 400,000 GB-seconds, 200,000 GHz-seconds of compute time, and 5GB of Internet egress traffic per month.
GCP free tier (one time) and always free services (monthly)
How to deal with secrets in cloud functions?
- Use environment variables
- Use Google Secret Key Manager services
MIME Types
image/jpg
image/png
text/plain
text/html
← AWS Cloud Platforms →