Perhaps everyone has used operators in Kubernetes, for example, PostgreSQL operator, VictoriaMetrics Operator. But what’s going on under the hood? How and to what are CustomResourceDefinition (CRD) applied, and what is an “operator”? And finally, what is the difference between a Kubernetes Operator and a Kubernetes Controller? In the previous part – Kubernetes: Kubernetes APIs,… Read More »
In the previous article, we figured out what an MCP is in general, and created a basic MCP server that was connected to Windsurf – see AI: What is the MCP? Now, let’s try to create something more useful, for example, an MCP server that will connect to VictoriaLogs and receive some data. In fact,… Read More »
Everyone around us is talking about MCPs all the time, and it’s time to understand the topic. So, today we will deal with the basic concepts – “what it is in general”, then we will write our own “micro-MCP server”, and in the next post – something more real, about working with VictoriaLogs. LLM Limitations… Read More »
To put it very simply, Celery is something we can use to perform tasks outside of our main service. For example, there is a Backend API that has some kind of endpoint to which mobile devices send information that the user has created a new whatever in the application. The task of the Backend is… Read More »
The last time I’ve used decorators in Python about 10 years ago, in Python 2, and I want to refresh my memory a bit, because now I’ve started using them quite actively, so want to see how it works under the hood, and what it is in general. The post turned out a bit… weird?… Read More »
We have an AWS Elastic Kubernetes Service cluster, which has a few WorkerNode Groups that were created as AWS AutoScaling Groups by using the eksctl, see the AWS Elastic Kubernetes Service: a cluster creation automation, part 2 – Ansible, eksctl for more details. The WorkerNode Group configuration for the eksctl keeps a set of Tags,… Read More »
One of the motives to go deeper into the keyrings (see the What is: Linux keyring, gnome-keyring, Secret Service, and D-Bus post) was the fact that Chromium, surprise-surprise, keep passwords unencrypted if a Linux system has no keyring and/or Secret Service enabled. So, let’s try to find how and where Chromium store passwords, and the… Read More »
Still on the subject about Redis replication and Redis Sentinel – a couple of examples using the redis-py library for Python. Previous series posts: Redis: replication, part 1 – an overview. Replication vs Sharding. Sentinel vs Cluster. Redis topology Redis: replication, part 2 – Master-Slave replication, and Redis Sentinel All Redis clients for Python can be… Read More »
In many Python modules you can find construction like: if __name__ == “__main__”: func() Its main purpose is to dedicate a code which will be executed during calling code as a module, after importing it into another code – and when running module itself as a dedicated script. Let’s take a look at a couple… Read More »