Which would you expect would be faster, SNS directly invoking a Lambda function? Or SNS to SQS to a Lambda function?

Here's a fun thread documenting what I've learned!
🧵👇
#Serverless In a totally unscientific test (N=3), I’ve observed SNS messages delivered directly to Lambda functions are slower than an SNS message sent to SQS, then delivered to Lambda.

Check out the following trace:

@fitzsimons_dev @dynamodb Oh! You're one of today's lucky 10,000!

DynamoDB streams are GREAT! I use them in almost every place I use a DDB table with #Serverless. I suggest doing non-essential work via stream vs in one long function call, so the end user gets the fastest experience possible.

Here's a 🧵 @fitzsimons_dev @dynamodb 1. Sending a confirmation email after a user registers.

This is an important function, but users shouldn't have to wait for my API to call an email provider before getting a response from the backend. Stream it to another function!