Performance Monitoring

Why don’t we talk about minifying CSS anymore?

Performance Monitoring
Remember Grunt files? Gulp files? We rarely need to think about CSS minification, chunking, splitting and post-processing anymore. Here's why.
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How to identify and fix Render-Blocking Resources

Performance Monitoring
Render-blocking resources are JavaScript and CSS files that prevent the web page from loading until they are downloaded. These might be…
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Find slow database queries with Query Insights

Performance Monitoring
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…
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From LCP to CLS: Improve your Core Web Vitals with Image Loading Best Practices

Performance Monitoring
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…
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Choosing the Right Metric: A Guide to Percentiles and Averages

Performance Monitoring
Not sure which performance metric to use to measure your application performance? Don’t worry – you’re not alone. With a wide variety of…
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Sentry Profiling now supports Browser Javascript, React Native, and Ruby

Performance Monitoring
Profiling is an essential component of a developer’s toolkit for identifying and addressing the thorniest performance bottlenecks. Whether…
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Code Refactoring and why you should refactor your code

Performance Monitoring
Software does not expire, but it “rots”. Its quality degrades over time. As you build your project and add features, you probably won’t…
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Web Fonts and the Dreaded Cumulative Layout Shift

Performance Monitoring
How frustrating is it when you’ve just landed on a web page, you click on a certain element and an ad or something else pops up and you end up clicking that thing instead? That’s a layout shift, which is bad for the user’s experience and the later they happen, the worse it is.
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Tame the performance of code you didn't write: A journey into stable diffusion

Performance Monitoring
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…
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Building better mobile experiences: tips from Riot Games and Nextdoor

Performance Monitoring
Building high quality, performant mobile apps is hard. Developers need to keep up with rapidly changing technologies, high user expectations…
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The New APM: Actionable, Affordable, and Actually Built For Developers

Performance Monitoring
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.
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Profiling Beta for Python and Node.js

Performance Monitoring
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…
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Application Profiling for Python

Performance Monitoring
Profiling is an important tool in every developer’s toolkit because it provides a granular view into the execution of your program from your…
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Application Profiling for Node.js

Performance Monitoring
Profiling is an important tool in every developer’s toolkit because it provides a granular view into the execution of your program from your…
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How Sentry uncovered an N+1 issue in djangoproject.com

Performance Monitoring
Sentry recently launched Performance Issues, a feature to help developers discover and fix common performance problems in their projects. We…
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Code-level Application Monitoring for Every Developer

Performance Monitoring
This content is out of date Since this blog post has been published we’ve evolved the feature to reduce complexity of configuration and…
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Performance Issues: Slow you can act on quick(ly)

Performance Monitoring
We’ve experimented and iterated (a few times) to finally bring the actionability that was once only reserved for errors to Performance.
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