Putting Node.js Serverless Apps into Production without the - - PowerPoint PPT Presentation

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Putting Node.js Serverless Apps into Production without the - - PowerPoint PPT Presentation

Jun 10, 2023 154 likes •774 views

Putting Node.js Serverless Apps into Production without the Pitfalls Ein Shanaghy @eoins @eoins Im going to talk about JS Modern JavaScript and Applications Serverless Pitfalls and how we How to overcome them Build Them Recipes

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@eoins

Putting Node.js Serverless Apps into Production without the Pitfalls

Eóin Shanaghy

@eoins

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@eoins

I’m going to talk about

Modern Applications How to Build Them Serverless

JS

JavaScript and Serverless Pitfalls and how we

  • vercome them

Recipes for Effective Serverless with JS

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@eoins

The Modern Application

Scalable User-focused Reliable Intelligent Fast to market Experimental!

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The best way to build a modern application

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@eoins

Build it with Wordpress!

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Build it with Haskell!

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Build it with Rails!

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@eoins

Build it with Erlang!

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Build it with Java Microservices

  • n Kubernetes
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Build it with Serverless using JavaScript

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Why would you do this?!!

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THE PURSUIT OF PERFECTION REALITY

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There are always trade-offs

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The pursuit of perfection

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@eoins David Redfern/Redferns/Getty Images

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@eoins

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CLOUD IaC MICROSERVICES INFRASTRUCTURE COMPLEXITY FUNCTIONS AS A SERVICE

λ

MANAGED SERVICES

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@eoins

#1 - Managed Services (incl. FaaS) #2 - Event-driven #3 – Pay only for what you use #4 – No idling infrastructure #5 – Less code Serverless

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JavaScript

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The Success of Node.js

Event-Driven I/O Single thread Developer Productivity Modules

Comprehend Find Create Ditch Easy to:

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Is JS a Good Fit for Serverless?

Maybe not…

  • One process per request
  • No HTTP server
  • Lack of types

But actually…

  • Fast to start
  • Fast runtime
  • No compilation overhead
  • Huge module ecosystem
  • Familiarity, ubiquity
  • Still highly productive!
  • JSON
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50-60% of Lambda Functions

New Relic, For the Love of Serverless 2020 Report

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Should We Choose JavaScript?

It matters less than ever before Start with what you know Experiment Solve the problems you observe

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@eoins handler.js

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@eoins lib/accommodation.js

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@eoins serverless.yml

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@eoins

curl https://8dmtx7a123.execute-api.eu-west- 1.amazonaws.com/dev/accomodation\?county\=Louth

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@eoins

requestId requestId: d791228a-687f-45ed- 918c-3165a7c20f5c, ip ip: 91.123.228.33, caller caller: -, user user: - , requestTime requestTime: 29/Feb/2020:14:23:14 +0000, httpMethod httpMethod: GET, resourcePath resourcePath: /accomodation, status status: 200, protocol protocol: HTTP/1.1, responseLength responseLength: 105418

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Challenges

Learning Curve Best Practices? Moving Target New Models Organisational Change Migration is Hard

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Serverless Adoption Rollercoaster

Experience Joy

Initial PoC Architecting a Production Application MVP Deployed Migrate DynamoDB Schema Scaling to massive user numbers! Lock down API Gateway + IAM Roles Maturity

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  • 1. Put all best practices together
  • 2. Make opinionated decisions
  • 3. Replicate production environment
  • 4. Make it open source
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@eoins

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slic.app

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@eoins

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Targets AWS

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Separate Accounts

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Serverless Framework CDK

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Infrastructure

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Infrastructure

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Infrastructure

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CDK

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Continuous Deployment

Essential Infrastructure resources + code Deployment time is critical

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Observability

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Structured Logs

{"level":30,"time":1575753091452,"pid":88157,"hostname":" eoinmac","name":"pino-logging- example","a":1,"b":2,"msg":"Hello world","v":1}

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Centralized Logs

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Service Metrics

Service Example Metrics Lambda Invocations, Errors, IteratorAge, ConcurrentExecutions DynamoDB ReturnedBytes, ConsumedWriteCapacityUnits Lex MissedUtteranceCount,RuntimePollyErrors Textract UserErrorCount, ResponseTime Rekognition DetectedFaceCount,DetectedLabelCount Polly RequestCharacters, ResponseLatency

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Application and Service Metrics

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Application and Service Metrics

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@eoins

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Distributed Tracing

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Distributed Tracing

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Chapter 6!

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Serverless is about productivity and agility Don’t seek perfection Move out of your comfort zone enough Check out SLIC Starter to avoid some Serverless pitfalls!

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@eoins

Thank You