Have you ever wondered how the internet manages to translate the domain names you type into the browser into IP addresses that connect you to your desired websites? The answer lies in the Domain Name System (DNS), a complex network of servers and protocols that makes online communication possible. But with this complexity comes the need for DNS monitoring, which plays a crucial role in ensuring website availability, preventing security breaches, and optimizing network performance.

OpenTelemetry (OTel) is an open-source observability framework that provides a standardized way of collecting, processing, and exporting telemetry data (metrics, traces, and logs) from distributed systems. It was born by a merger between two previously separate observability projects, OpenCensus and OpenTracing, and it is currently maintained by the Cloud Native Computing Foundation (CNCF).

Let's say you log into your amazon or eBay account and start searching for a gift clothing. First you would filter out gender-specific collections, then you might fix a particular color or even a set of colors of your choice, and following that, you can fix a price range. When you apply these filters one by one, you can see the aggregate products displayed each time varies (their total number changing according to the availability of aggregates). This is exactly what aggregations do.

Are you concerned about the security of your website or online business? Do you want to ensure that your customers can trust your site and transact with you safely? If so, then you need to know about SSL certificate monitoring! SSL certificate monitoring is the process of continuously monitoring SSL certificates for potential vulnerabilities or incidents, such as certificate revocation or expiration, and other security issues.

You'll notice that monitoring and logging don't appear on the list of core Kubernetes features. However, this is not due to the fact that Kubernetes does not offer any sort of logging or monitoring functionality at all. It does, but it’s complicated. Kubernetes’ kubectl tells us all about the status of the different objects in a cluster and creates logs for certain types of files. But ideally speaking, you won't find a native logging solution embedded in Kubernetes.

Coding is a big part of building an application. But, most of the time, you don’t write the entire code. Yes, you don't! Some people, usually big companies, provide pre-written codes for certain standard functions - like loggers, APIs, etc. This is because these functions work the same way in most applications; they require only simple fine-tuning to be adapted for your program as well. In such a case, writing it all from scratch would be a waste. And that is why developers use libraries.

Any application you build has three distinct layers - a server-side interface, a client-side interface and the central codebase. In a monolith application, all these programs are written in a single language, and placed in the same web stack as well. Earlier web applications were written this way.

Grafana is a powerful open-source data visualization platform created by Torkel Ödegaard in 2014. With its front-end written in Typescript and a Golang back-end, this data monitoring platform allows users to create and share interactive and dynamic dashboards with custom charts and panels using data from various sources, including InfluxDB, Prometheus, Elasticsearch, and many others. Template variables are also available as dropdown options to create dynamic and reusable dashboards.

Redis is a widely used in-memory database in the industry. As a consequence of its in-memory database, it can concurrently serve data as a key-value-oriented NoSQL database. Due to the use of in-memory data storage in Redis, you can achieve performance that is challenging with conventional databases. It is crucial to monitor Redis' resource usage since it is an in-memory data store.

Several tech giants like Amazon and Netflix have jumped from their monolithic applications to microservices. This has allowed them to expand their business interface tremendously and improve their services. Not only them, but most businesses today are dependent on microservices. Twitter currently has about a thousand such services working together, releasing meaningful outputs.