In the ever-evolving world of software development, one constant remains - the pursuit of better performance. As applications grow in complexity and demand, the need for tools to uncover performance bottlenecks becomes paramount.

Flamegraphs, a brainchild of Brendan Gregg, has emerged as an important visualization of insight, showing those dark corners of your codebase that need optimization. Before we dive into understanding how to use these instruments, let's first light the flames of curiosity by exploring what exactly a Flamegraph is and why it's a must-have in your performance optimization toolkit.

This guide covers key metrics important for efficiently monitoring RabbitMQ. We will also talk about in-built RabbitMQ monitoring tools with which you can start monitoring your RabbitMQ instances.

Datadog has a huge product footprint with a sophisticated user experience, but any discussion of its usefulness must include a consideration of its significant costs. Datadog pricing is complex and has a lot of SKUs that a customer needs to understand. If you're not careful, you might end up blowing your Datadog bill.

What is the hidden potential of OpenTelemetry? It goes a lot further than the (awesome) application of tracing and monitoring your software. The OpenTelemetry project is an attempt to standardize how performance is reported and how trace data is passed around your microservice architecture. This context propagation is a superpower for those who adopt OpenTelemetry tracing. Tracetest promises to make this deep tracing a huge new asset in your testing landscape, and SigNoz helps all engineers get insight into what OpenTelemetry can see.

More and more companies are now shifting to a cloud-native & microservices-based architecture. Having an application monitoring tool is critical in this world because you can’t just log into a machine and figure out what’s going wrong.

OpenTelemetry is a Cloud Native Computing Foundation(CNCF) incubating project aimed at standardizing the way we instrument applications for generating telemetry data(logs, metrics, and traces). OpenTelemetry aims to provide a vendor-agnostic observability framework that provides a set of tools, APIs, and SDKs to instrument applications.

Both Jaeger and Prometheus are popular open-source application performance monitoring tools. While Jaeger is an end-to-end distributed tracing tool, Prometheus is used as a time-series database for monitoring metrics. Let's dive in to explore their key features and differences.

Nodejs is a popular Javascript runtime environment that executes Javascript code outside of a web browser. Express is the most popular web frameworks that sits on top of Nodejs and adds functionalities like middleware, routing, etc. to Nodejs.

Spans are fundamental building blocks of distributed tracing. A single trace in distributed tracing consists of a series of tagged time intervals known as spans. Spans represent a logical unit of work in completing a user request or transaction.