I would like to talk about interesting stuff that I faced on my project. For our client, we wrote some lightweight microservices in AWS that just proxies requests to some underlying services via HTTP and returns it back to the client. The main flow: At first glance, what could…

Nowadays, Fargate is very popular. It solves such ECS with EC2 problems as: Scaling problem (with EC2 you should have ASG which will add additional nodes if not enough resource in ECS cluster. It’s quite tricky) Not efficient resource utilization (with EC2 you always need a free buffer in ECS…

Recently AWS announced supporting Java 17 runtime for AWS Lambda. In this article, we are going to compare the performance between Java 17 and Java 11 for AWS Lambda. Also, we will measure the performance of SnapStart. What is SnapStart you can read in my previous article Test scenario Environment: eu-west-1 region …

I hope everyone already knows that Java is not a perfect language for AWS Lambda because of its huge cold start(first start) issue. You can read about it in my previous article. What is SnapStart At AWS re:Invent 2022, AWS announced SnapStart for AWS Lambda running on Java Corretto 11…

Today I would like to test if Project Loom is ready to replace Spring WebFlux(the most popular efficient reactive framework) for writing high-throughput concurrent applications Problems of Reactive/Non-blocking services WebFlux is great, the performance is fantastic, but: Functional code is difficult Difficult to debug Bad stack trace Clients/libs should be…

AWS Lambda GraalVM native: Quarkus vs plain Java I prefer to use plain Java code for GraalVM native AWS Lambda but my colleagues often ask me why I don’t consider some framework for this. My first point is that our AWS Lamda code should be simple enough to write without…

As you may know, just a month ago AWS announced AWS Graviton2 Processors for AWS Lambda and says that AWS Lambda functions using the Arm/Graviton2 architecture provide up to 34 percent price-performance improvement. In this article, we are going to check what real price-performance improvement we can see for the…

Since AWS Lambda is so popular and supports so many languages and custom runtimes, I was trying to find on Internet the benchmarks for all supported languages with detailed results, but I didn’t find anything relevant. Some articles are old or don’t contain all languages. Let’s compare the performance of…

Do you also like Serverless and Java, but hate a Java code start? In this article, we are going to demonstrate how to solve Java cold start issue in AWS Lambda. Let’s write some book microservice and measure the performance. As usual all code you can see in my Github…