Metrics, Logs and Traces are often referred to as The Three Pillars of “Observability“. The term observability has been used in control theory to refer to how the state of a system can be inferred from the system’s external outputs. Applied to IT, observability is how the current state of an application can be assessed based on the data it generates. Applications and the IT components they use provide outputs in the form of metrics, events, logs and traces (MELT).

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. You can monitor your express application using OpenTelemetry and a tracing backend of your choice.

OpenTelemetry can auto-instrument many common modules for a Javascript application. The telemetry data captured can then be sent to SigNoz for analysis and visualization. OpenTelemetry is a set of tools, APIs, and SDKs used to instrument applications to create and manage telemetry data(Logs, metrics, and traces). For any distributed system based on microservice architecture, it's an operational challenge to solve performance issues quickly.

In this post, we’ll be delving into Java performance optimization, providing you with essential tips to write faster and more efficient code. If you’re reading this, you’re probably already aware of the importance of performance engineering and the need to optimize your code to ensure speed for all users, but even the most seasoned and performance-aware programmers can get tripped up.

Alerting is a critical feature in monitoring and observability products. The monitoring platform continually tests systems and applications for metrics crossing thresholds, key events in logs and the other warning signs of issues. Alerting ensures that help desks, administrators and IT Ops teams know about issues, or impeding issues and handle communications and remediation rapidly.

In this article, learn how to setup application monitoring for Node.js apps with our open-source solution, SigNoz. Node.js tops the list of most widely used frameworks by developers. Powered by Google's V8 javascript engine, its performance is incredible. Ryan Dahl, the creator of Node.js, wanted to create real-time websites with push capability. On Nov 8, 2009, Node.js was first demonstrated by Dahl at the inaugural European JSconf.

When it comes to getting to the root of a performance problem, nothing beats the lightning-fast speed and precision of Application Performance Management (APM). But choosing between New Relic and Scout can be like navigating a labyrinth of options and considerations. With New Relic, you'll get a top-of-the-line tool that's perfect for some situations, while Scout's streamlined approach fits like a glove in others.