Imagine you have a legacy project with spaghetti javascript code and need to troubleshoot. You have no idea where to start other than searching your IDE for some special keywords to find the right spot. I needed to do this in an older Ext JS application. With no idea where…

In this post I will show you how you can optimize your PHP programs in terms of memory usage in the cloud. There are several ways you can control it and keep it low. Cloud computing The cloud allows you to run PHP code Serverless(cloud functions) or in Container based environments. The…

In this post I show you how to setup a web proxy with Docker in no time. But first of all we should ask ourselves why do we actually want to do that? Example code: https://github.com/stefpe/squid_proxy Why a proxy? A proxy is sitting between a client(sending a request ) and a server(responding to…

Repository for the article: https://github.com/stefpe/phpstan What is static code analysis? With static code analysis, you can check whether your code fits the defined requirements in terms of form and syntax. The check is performed without executing the program. As a result you will find code smells/infections that will lead to problems when you run the…

Software as a service apps should store configuration values in environment variables when you rely on the twelve-factor app Saas guide. The twelve-factor rule says you should seperate config from your code, because configuration varies across environment stages: https://12factor.net/config Since nginx version 1.19 it’s possible to replace values in nginx…

In this post, I show how your application running in ECS withstands load peaks automatically. Everything can be managed in infrastructure as code(IaC) setup via terraforming. What is ECS Autoscaling? It’s the ability to adjust the desired count of tasks in your ECS service. How does it work internally? AWS uses Cloudwatch metrics to check the average CPU/Memory of…

Finally it is possible to connect via CLI to your running containers in AWS ECS Fargate/EC2 via the AWS CLI/API. No matter if your ECS cluster runs in a private subnet or not. No bastion/jump host is necessary. At the moment only the newest 1.* AWS CLI release has the…

In this post we take a look what AWS RDS offers to be a high performant and resilient database system. RDS has two capabilities called Multi AZ and read replicas to get this done. What means multi AZ on RDS? Feature to keep your database service running and make it resilient Another RDS instance(replica) gets configured…

You covered your codebase with unit tests but you’re still facing some weird bugs from time to time and don’t know how to find the issues in your web application, serverless endpoint or cron job script? …