Performance Monitoring

When a parent component passes down a callback function to a memoized child component through its props, React will re-render the child component every time the parent component gets re-rendered, even though the child component is memoized. In this article, we’ll look into that problem, and learn how to fix it.

Extracting relevant insights from your performance monitoring tool can be frustrating. You often get back more data than you need, making it…

Your app’s networking directly affects the user experience of your app. Imagine having to wait a few seconds for the page to load. Or even worse, imagine waiting for a few seconds every time you perform an action. It would be infuriating! Before you go on a fixing adventure, it’s a good idea to understand what causes that waiting time. So let’s do that!

Render-blocking resources are JavaScript and CSS files that prevent the web page from loading until they are downloaded. These might be…

There’s only so much you can control when it comes to your app’s performance. But you control what is arguably most important - the code…

If you’re a front end developer, there’s a high probability you’ve built (or will build) an image-heavy page. And you’ll need to make it…

Not sure which performance metric to use to measure your application performance? Don’t worry – you’re not alone. With a wide variety of…

Profiling is an essential component of a developer’s toolkit for identifying and addressing the thorniest performance bottlenecks. Whether…

Distributed tracing helps developers understand performance & identify bottlenecks. Learn more here about how distributed tracing operates behind the scenes.

In our daily lives as developers, we have to deal with a lot of code that we did not write ourselves (or wrote ourselves but already forgot…

Building high quality, performant mobile apps is hard. Developers need to keep up with rapidly changing technologies, high user expectations…

You shouldn’t need a Ph.D. in your APM tool to understand the performance of your application. Sentry’s new approach to application monitoring is focused on being actionable, affordable, and *is actually* built for developers. Learn how we're redefining the future of APM.

A couple months ago, we launched Profiling in alpha for users on Python and Node.js SDKs — today, we’re moving Profiling for Python and Node…

This is part 2 of a 2-part series on profiling. If you’re not yet familiar with the what profiling is, check out the first part in our…

Learn how to measure the performance of individual functions in your Swift app by using Sentry's Custom Instrumentation feature.

Profiling is an important tool in every developer’s toolkit because it provides a granular view into the execution of your program from your…

Profiling is an important tool in every developer’s toolkit because it provides a granular view into the execution of your program from your…

This content is out of date Since this blog post has been published we’ve evolved the feature to reduce complexity of configuration and…