Concerning with AWS Scalability with Serverless framework

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When I deploy a serverless framework codebase to AWS, I am curious about what method will be better. For now, there are 2 options.

  • Use Nest.js or Express.js so I deploy one function to Lambda and this function will handle all API endpoints
  • Deploy number of functions so each of them represents a single API endpoint

Regarding scalability, which option is a good approach?

aws-lambda serverless-framework node.js amazon-web-services
2 Answers

Second option is always better. Creating multiple lambda function for each functionality.

Lambda latency depend on how many calls get from API gateway. If you are using multiple endpoint and single lambda calls then it is going to bottleneck or high latency issue. Plus lambda charge based on per lambda calls. Each lambda 1 million request is free if you use one lambda for all use going to hit this limit early.

Recommendation is use different lambda function for each functionality and this is beauty of Micro Service. Keep simple and light weight.

user_62850540

One of the main benefits of Lambda Functions is independently scalable pieces of functionality within your application.

You not only realize isolated scalability this way but you also realize cost savings potentially.

user_1176580
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