Amazon Simple Notification Service (SNS) and Amazon Simple Queue Service (SQS) are both cloud-based messaging services provided by Amazon Web Services (AWS). While both services can be used for communication between different applications and services, they differ in their use cases and capabilities. SNS is a fully-managed pub/sub messaging service…

This is a post on the use case differences between Amazon EventBridge Pipes and Amazon SQS. Spoiler alert: they are rather similar, but the more honest comparison would be between EventBridge Pipes and SNS. AWS announced the release of EventBridge Pipes on Dec 1, 2022. …

This is a Quick & Simple post on the difference between the TokenAuthorizer and RequestAuthorizer with regards to API Gateway. Both require a Lambda to do the actual authorization. The…

This is a Quick & Simple post on the difference between the public and external modifier in Solidity. In short, public is for when a function should be callable from outside the contract (by EOAs or other contracts) AND also be callable internally in the contract. external on the other…

You’re here (hopefully) because you were trying to run the aws s3 cp command but got the error: Parameter validation failed: Invalid length for parameter Key, value: 0, valid range: 1-infLet’s cut to the chase. Are you trying to upload a whole directory (e.g. the current directory)to your bucket …

This is a post on the the use case differences between Lambda@Edge and CloudFront Functions. This is a Quick & Simple post. Let’s begin. Very Quick History First, you should be aware that CloudFront Functions (released in 2021)came after Lambda@Edge (released in 2017) as that gives you some context for the differentiation. Lambda@Edge…

You were attempting to run aws sync and you ran into an Access Denied Error for ListObjectsV2. So you tried to add the ListObjectsV2 permission, but you couldn’t find it. …

This is a quick debugging post for development with https://github.com/project-serum/anchor If you’re getting the error message TypeError: src.toTwos is not a function or TypeError: src.toArrayLike is not a function then…

So you’re trying to deploy a cdk app and you come across Bucket named X exists, but not in account Y. Wrong account?' The error message is misleading. The issue…