Tag: lambda

My ten-year quest for concise lambda expressions in Java

I started learning Java in 1997. I thought initially Java would be a fad and that Smalltalk would emerge as the victor in the battle for object-oriented programmer productivity over C++. I was wrong. In the great object-oriented battles in the 1990s between C++ and Smalltalk, Java emerged as the vic...

Use Lambda Calculus To Think About Functional Programming

I can hear it now: “Nerd!” I guess it is nerdy to write an article on lambda calculus. But hear me out. I learned about lambda calculus this past semester. It was covered in a course called Principles of Programming Languages. Learning this formal system was supposed to help us stu...

Why use functional programming, lambda, and generics, in Java

The Java programming language is famous for being Object Oriented, and infamous for being verbose and full of checked exceptions. When the Java language designers introduced Functional Programming abilities into the language with version 1.8, it wasn’t immediately understood how that would hel...

Are We Making Lambda Too Hard

You may or may not know that I run a weekly serverless newsletter. The newsletter compiles the best serverless content every week and gives a summary with my thoughts. I love doing it — it’s a great way to stay up to date on all the new feature releases and keep up with trending ...

Are We Making Lambda Too Hard?

You may or may not know that I run a weekly serverless newsletter. The newsletter compiles the best serverless content every week and gives a summary with my thoughts. I love doing it — it’s a great way to stay up to date on all the new feature releases and keep up with trending ...

Aws Lambda that Reacts to S3 File Upload

Today we will see how we can design an architecture where we will upload a file to aws s3, and after the file is uploaded successfully, a lambda will be Triggered. That lambda will download the file and do some operations on it. Some possible options might be Generating a thumbnail version ...

Amazon SNS Notification Topics Subscribe From AWS Lambda

In this article, we are going to subscribe Amazon SNS topics from AWS Lambda Functions. This will be hands-on lab for Amazon SNS Notifications Subscribe From AWS Lambda. Amazon SNS Topics Subscribe From AWS Lambda By the end of the article, we will develop AWS Lambda function which subscri...

Automate CloudWatch Custom Metrics like Memory and Disk Utilization on Windows EC2 instance using Lambda function

As we are seeing, nowadays industries are growing and everyone wants to save their time, so everyone’s focus is on automation. As we know that AWS provided so many default metrics, but what if we want to monitor Disk and Memory utilization of our EC2 instance, As per AWS we have to manually co...

FastAPI App Deployment Using AWS Lambda And API Gateway

FastAPI is a modern fast (high-performance) web framework for building APIs with Python. FastAPI features FastAPI gives you the following, based on open standards OpenAPI for API creation, including declarations of path operations, parameters, body requests,...

Blue-Green Deployments With AWS Lambda

Developing resilient software is great, but updating it seamlessly without any disruptions to the users is a skillful art. It’s quite a challenge. One strategy that has gained momentum is the Blue-Green deployment method. What is the Blue-Green Deployment Strategy? The Blu...

Local Dev: AWS Lambda RIE

Many times, I was required to test or create AWS Lambda services. I was looking for a solution that would help me do this in a efficient way. AWS Lambda Runtime Interface Emulator (RIE), which is a tool that you can use to test Lambda functions locally. It is a small web server that exposes the L...