Tomas Tulka's Blog

Random thoughts about programming and other stuff.


Serverless Is Not Just Lambda

Let’s take a look at the serverless AWS offerings that will save us a lot of money and effort.

Multitenancy and the Cloud

Multitenancy was and still is a very popular and successful architectural pattern of the last decades. But, that is likely to change with the advent of cloud computing.

Domain-Driven Serverless Design

One reason I really like the serverless architecture approach is being pretty selfish: one has to care only about what matters - the code.

Product Releasing Pipeline in AWS

Continuous delivery (CD) brings a lot of ideas essential for a modern software product deployment. In this article we discuss how to follow CD principles by building CD pipelines with an example in AWS.

How to Manage AWS CloudFormation Stack Dependencies

Automated infrastructure (Infrastructure as Code) is essential to succeed (not only) in the cloud.

Challenges for Serverless Blue-Green Deployment

Serverless blue-green deployment is a nice practice. However, it doesn't come without challenges.

Serverless Blue-Green Deployment

Blue-Green Deployment is a very good technique that has been successfully used for managing releases of cloud applications. Now it's time to rethink it a bit for serverless systems.

Function Separation in a Microservice

Talking about serverless microservices, functions are the basic building blocks of the service functionality. How to design them from the code and deployment perspektive?

Testing Serverless Systems

Testing serverless systems is hard. In this article, we will discuss some practices which work well for my project.

Secure Communication between Services in Multitenant Systems

Implementing a SaaS as a multitenant system brings a lot of benefits. As usual, there are some tradeoffs, too. For example security becomes more complex. Let's take a look at possible approaches when implementing security in a multitenant architectrure.