Blue-Green Deployment is a very good technique which has been successfully used for managing releases of cloud applications. Now it's time to rethink it a bit for serverless systems.
Thinking about a deployment strategy for a microservices-based system it's natural to consider a rollback. Before looking for a technical solution, let's discuss this idea conceptually. Is it even possible to roll microservices back?
Talking about serverless microservices, functions are the basic building blocks of the service functionality. How to design them from the code and deployment perspektive?
Designing a system architecture is always about making tradeoffs. Microservices resp. serverless architecture has a lot of benefits, but some drawbacks as well. One of them is testing. Testing serverless systems is hard. In this article I will discuss some practices which work for my project.
Based on my question on StackOverflow I did a bit investigation about how (likely) are Node.js functions called in AWS Lambda containers.
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.
In my previous article I showed how to build a simple RESTful microservice. For sake of simplicity I skipped some good practices for building REST APIs and I feel a bit guilty about that. I think that topic deserves its own article. And here we go... we take a look at the previous API and try to do things better.
How difficult is to properly implement the microservices design pattern in PHP? It will definitely need some thinking and maybe to leave some convince behind. At the end of the day we should have an autonomous loosely coupled service with all the benefits (and drawbacks) of microservices.
In this article we do a little walk-through of a development process of a small RESTful microservice in PHP and we take a look at some Domain-Driven Design (DDD) theory as well.