Serverless Computing
What does Serverless mean?
Serverless computing is a misnomer referring to a cloud-computing execution model in which the cloud provider runs the server, and dynamically manages the allocation of machine resources.
If you cant see the server in the service, then its serverless
A serverless solution is one that costs you nothing to run if nobody is using it
Serverless is an event driven, utility based, stasteless, code execution environment in which you write code and consume services.
managed services that scale to zero
What you do in serverless Systems?
- Write code
- Define triggers
- Connect managed services together
- Pay for consumption instead for allocation
What you do not do in Serverless systems?
- Dont pre-provision infrastructure
The paradigm change for serverless
- You are only responsible for your application itself infrastructure is fully managed
- Your architecture depends on events and stateless computing
- When nothing happening, you pay nothing
- When something does happen, you have fine grained
Serverless use cases
- 3-tier web apps
- Web API's
- Stream processing
- Data pipelines
- Batch processing
- Infrastructure automation
Serverless Complements existing priorities
- Move to microservices
- Adopt DevOps practices
- Install continuous delivery
- Adopt event driven architectures
- Enable mobile computing
- Introduce ML/AI
Hosted FaaS platforms
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AWS Lamdba
- Supported languajes : Node, Java, C#, Python
- Available triggers : Kinesis, Dynamo, S3
- Features to know : Dynamic scaling, cross AZ, custom runtimes, HTTP via API Gateway, workflow with step functions
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Azure Functions
- Supported languajes: Node, Java, C#
- Available triggers : Blob Storages, Cosmos DB, HTTP
- Features to know: Two consumption modes, declarative bindings, aggregate proxies, durable functions for stateful workflows.
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Google Cloud Functions
- Supported languajes: Node, Python, Go
- Available triggers: HTTP, Pub/Sub, Storage, Firestore, Firebase
- Features to know: Auto Scaled with max option, version draining
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Cloudflare Workers:
- Supported languajes: Javascript, WebAssembly
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Alibaba:
- Supported languajes: Node, Python, java, PHP
- Available triggers: HTTP
Serverless Framework
- Amplify Framework
- Serverless framework
- Spring Cloud Function
- Claudia JS
- Stackery
- IOpipe
- Sigma IDE
Resources Links