Simplifying Serverless Integration Testing: WireMock on AWS Lambda

In serverless architectures, integration testing becomes a key focus in the testing pyramid, as local environments cannot fully replicate the complexities of cloud deployments. External APIs, often unavailable or difficult to configure, pose a significant challenge during testing.

Mocking external APIs locally with tools like WireMock is common, but to truly validate serverless applications, testing must occur in the deployed environment. This talk explores how to leverage WireMock on AWS Lambda to mock external APIs directly in the cloud.

Attendees will learn how to set up and configure WireMock on AWS Lambda, integrate it into their workflows, and ensure reliable, deployment-level testing. This approach simplifies testing, reduces dependency on external systems, and enhances confidence in serverless application behavior in real-world scenarios

For in person presentation, I will need internet connection for the demo

Simplifying Serverless Integration Testing: WireMock on Azure Functions

In serverless architectures, integration testing becomes a key focus in the testing pyramid, as local environments cannot fully replicate the complexities of cloud deployments. External APIs, often unavailable or difficult to configure, pose a significant challenge during testing.

Mocking external APIs locally with tools like WireMock is common, but to truly validate serverless applications, testing must occur in the deployed environment. This talk explores how to leverage WireMock on Azure Functions to mock external APIs directly in the cloud.

Attendees will learn how to set up and configure WireMock on Azure Functions, integrate it into their workflows, and ensure reliable, deployment-level testing. This approach simplifies testing, reduces dependency on external systems, and enhances confidence in serverless application behavior in real-world scenarios

For in person presentation, I will need internet connection for the demo

7 ± 2 Kotlin Features That Can Work For or Against You

In this live coding session, I’ll walk through Kotlin features that can work for or against you. For each one, we’ll show the problem it solves, the simple usage, side effects or gotchas, and then an advanced use case, using Jupyter notebooks for live coding.

Live coding session includes features like:
* getOrNull and getOrElse for safe collection access
* as? for safe casts
* require, check, checkNotNull, and error for assertions in the code
* runCatching for dealing with exceptions
* functions as types: when Java Frameworks such as Spring expect more than a Lambda, and how functional interfaces can help

Kotlin Clean Architecture for Serverless: Business Logic You Can Take Anywhere

As cloud platforms continue to evolve, serverless functions provide powerful ways to build and scale applications with reduced infrastructure concerns. However, cloud-specific requirements often make it challenging to keep business logic portable across different cloud providers. This session presents a variant of clean architecture designed to separate core business logic from cloud-specific code, leveraging Kotlin’s capabilities along with Spring Cloud Function and headless Gradle modules.

In this talk, I’ll demonstrate how to structure a Kotlin application for serverless using a simplified clean architecture approach. This structure maintains cloud-agnostic business logic while allowing platform-specific implementations for integration functionality like storage. By isolating business logic in headless modules, developers can deploy the same core code across multiple cloud function providers such as AWS Lambda and Azure Functions.

Through live coding, we’ll explore practical techniques for building and deploying serverless applications with cloud-agnostic business logic.
This session is aimed at advanced Kotlin developers interested in serverless architecture, cloud flexibility, and clean architecture principles.