Learn Functionx - 10 Code Examples & CST Typing Practice Test
FunctionX (FX) is a next-generation blockchain platform that combines the Ethereum Virtual Machine (EVM) compatibility with cross-chain interoperability and decentralized applications. It aims to provide scalable, fast, and secure infrastructure for DeFi, dApps, and Web3.
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Learn FUNCTIONX with Real Code Examples
Updated Nov 25, 2025
Code Sample Descriptions
Simple FunctionX Deployment
# functionx/demo/deployment.yaml
service: hello-world
provider: aws
runtime: nodejs14.x
functions:
hello:
handler: handler.hello
events:
- http:
path: /hello
method: get
A basic FunctionX YAML configuration for deploying a serverless function.
FunctionX Deployment with Environment Variables
# functionx/demo/env.yaml
service: env-demo
provider: aws
runtime: nodejs14.x
env:
STAGE: dev
API_KEY: 12345
functions:
envTest:
handler: handler.envTest
events:
- http:
path: /env
method: get
FunctionX YAML configuration demonstrating environment variables for a function.
FunctionX Scheduled Function
# functionx/demo/schedule.yaml
service: scheduler-demo
provider: aws
runtime: nodejs14.x
functions:
scheduledTask:
handler: handler.scheduledTask
events:
- schedule:
cron: '0 12 * * ? *'
A FunctionX function triggered by a cron schedule.
FunctionX Deployment with Multiple Functions
# functionx/demo/multiple.yaml
service: multi-func-demo
provider: aws
runtime: nodejs14.x
functions:
first:
handler: handler.first
events:
- http:
path: /first
method: get
second:
handler: handler.second
events:
- http:
path: /second
method: post
YAML demonstrating multiple serverless functions in one service.
FunctionX Function with IAM Role
# functionx/demo/iam.yaml
service: iam-demo
provider: aws
runtime: nodejs14.x
functions:
secureFunc:
handler: handler.secureFunc
role: arn:aws:iam::123456789012:role/customRole
events:
- http:
path: /secure
method: get
A FunctionX YAML configuration specifying a custom IAM role for a function.
FunctionX Function with VPC Configuration
# functionx/demo/vpc.yaml
service: vpc-demo
provider: aws
runtime: nodejs14.x
vpc:
subnets:
- subnet-12345678
- subnet-87654321
securityGroupIds:
- sg-12345678
functions:
vpcFunc:
handler: handler.vpcFunc
events:
- http:
path: /vpc
method: get
A FunctionX YAML defining a function inside a VPC for secure network access.
FunctionX Function Triggered by S3
# functionx/demo/s3trigger.yaml
service: s3-demo
provider: aws
runtime: nodejs14.x
functions:
s3Upload:
handler: handler.s3Upload
events:
- s3:
bucket: my-upload-bucket
event: s3:ObjectCreated:*
FunctionX YAML for a function triggered when an object is uploaded to an S3 bucket.
FunctionX Function with Lambda Layer
# functionx/demo/layer.yaml
service: layer-demo
provider: aws
runtime: nodejs14.x
layers:
commonLibs:
path: layers/commonLibs
functions:
layerFunc:
handler: handler.layerFunc
layers:
- { Ref: commonLibs }
events:
- http:
path: /layer
method: get
A FunctionX function using a Lambda layer for shared dependencies.
FunctionX Function with Environment Secrets
# functionx/demo/secrets.yaml
service: secrets-demo
provider: aws
runtime: nodejs14.x
functions:
secretFunc:
handler: handler.secretFunc
env:
DB_PASSWORD: {{resolve:secretsmanager:dbPassword:SecretString}}
events:
- http:
path: /secret
method: get
A FunctionX YAML showing secret environment variables from AWS Secrets Manager.
FunctionX Function with Multiple Triggers
# functionx/demo/multi-triggers.yaml
service: multi-triggers-demo
provider: aws
runtime: nodejs14.x
functions:
multiFunc:
handler: handler.multiFunc
events:
- http:
path: /multi
method: post
- s3:
bucket: my-upload-bucket
event: s3:ObjectCreated:*
A FunctionX YAML where a single function has HTTP and S3 triggers.
Frequently Asked Questions about Functionx
What is Functionx?
FunctionX (FX) is a next-generation blockchain platform that combines the Ethereum Virtual Machine (EVM) compatibility with cross-chain interoperability and decentralized applications. It aims to provide scalable, fast, and secure infrastructure for DeFi, dApps, and Web3.
What are the primary use cases for Functionx?
Deploy EVM-compatible smart contracts. Develop decentralized applications (dApps). Create DeFi platforms and protocols. Enable cross-chain transactions and interoperability. Build NFTs and tokenized assets
What are the strengths of Functionx?
EVM compatibility allows seamless Ethereum migration. Cross-chain interoperability expands reach. High transaction speed with low fees. Secure modular blockchain architecture. Supports decentralized finance, NFTs, and Web3 apps
What are the limitations of Functionx?
Relatively new ecosystem compared to Ethereum/BSC. Smaller developer community. Limited number of dApps compared to larger chains. Requires understanding of cross-chain bridges. Scalability depends on network adoption
How can I practice Functionx typing speed?
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