yurii-sorokin / localstack-demo

Serverless LocalStack (SQS, SNS, S3, DynamoDB)

• serverless-localstack 0.4.0
• localstack 0.12.9

Summary

• pros
  • supports a lot of aws services
  • single source of all aws data, all aws-sdk clients are configured in the same way
  • seamless integration with other services (check the trigger chain in the example, lambda fn (send sqs) -> sqs fn (publish sns) -> sns fn (put in dynamodb))
  • not possible to use lambda optimization mountCode: true, it just doesn't work with that stack tested
  • works with serverless offline (but again only if mountCode: false and with cloudside plugin)
  • large community
• cons
  • requires global external dependencies (python, pip, localstack, docker)
  • not stable when deploying fns iteratively (sometimes the same deploy may fail, sometimes it succeed), seems work ok for the clean startup
  • no watch mode (possible to integrate with serverless offline)
  • may be hard to apply for existing project with complex serverless config
  • issues with typescript plugin (serverless-webpack could be used instead, but requires manual setup)

Serverless Offline SQS

• serverless-offline-sqs 4.1.1
• elasticmq 1.1.0

Summary

• pros
  • easy setup
  • built in watch mode (provided by serverless offline)
• cons
  • requires external dependency (java, elasticmq-server)
  • may be challenging to integrate with other offline plugins (sns, s3, dynamodb), needs multiple services running (dynamodb-local, Minio)
  • small community