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AWS Lambda

What is Lambda?

Lambda is a serverless execution environment.
Lambda allows you to execute code remotely without having to manage a server.
 You can deploy your own containers with Lambda.

What is a serverless execution environment?

There is still a server running the code somewhere.
A serverless environment just provides you an execution environment without having to manage the server yourself.

Language Support

By default lambda environments only support Java, Ruby and Python.
However, you can add "layers" to get support for other things.

Other serverless products:

  • S3
  • DynamoDB
  • Other things AWS has: EventBridge (CloudWatch Events) - Enables the use of cronjobs, automated script execution. Step Functions. These have a technical timeout of 1 year.

Random AWS Questions and Answers

Q. Which product is not a good fit if you want to run a job for ten hours? a. AWS Batch b. EC2 c. Elastic Beanstalk d. Lambda

A: d. Lambda. No lambda function cannot be run for more than 15 minutes.

Q. What product should you use if you want to process a lot of streaming data? a. Kinesis Firehose - Has no memory other than its buffer b. Kinesis Data Stream c. Kinesis Data Analytics d. API Gateway

A: b. Kinesis Data Stream Kinesis Analyntics is used for transforming data API Gateway is used for managing apis Firehose is used mainly for large amounts of nonstreaming data