Performance Monitoring

Low effort image optimization tips

Performance Monitoring
“A picture is worth a thousand words”. So if a picture takes more than 4 seconds to load, does it mean that your website’s content fails to communicate a thousa...
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INP, tracing, and mobile app starts: move faster and solve real user pain with Sentry Performance

Performance Monitoring
Today, we're making it even easier to find and solve user-impacting issues with three new Sentry Performance features: INP (Interaction to Next Paint) as a new ...
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What is INP and why you should care

Performance Monitoring
On March 12th 2024, Google is launching a new Core Web Vital metric, Interaction to Next Paint (INP). INP will replace First Input Delay (FID) and will change t...
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Browser Profiling Learnings from Sentry.io

Performance Monitoring
Since enabling browser profiling on our Sentry.io dashboard a month ago, we have collected over 2M profiles and learned a lot about how our users experience our...
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Sentry Bundle Size: How We Reduced Replay SDK by 35%

Performance Monitoring
Bundle Size matters - this is something we SDK engineers at Sentry are acutely aware of. In an ideal world, you'd get all the functionality you want with no add...
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Fetch Waterfall in React

Performance Monitoring
Have you seen this problem? Or maybe this one? You’ve most likely seen this: export const Component = () => { const [data, setData] = useState() const [load...
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Fixing memoization-breaking re-renders in React

Performance Monitoring
React’s component-based approach to building web applications allows us to break up our web apps into smaller components that we can easily reuse. When a compon...
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Performance Monitoring for Every Developer: Web Vitals & Function Regression Issues

Performance Monitoring
Extracting relevant insights from your performance monitoring tool can be frustrating. You often get back more data than you need, making it difficult to connec...
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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 critical resources that ...
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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. Sentry Performance get...
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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 look great by serving h...
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Responsive Images: A cheap trick to improve page performance

Performance Monitoring
Being a frontend developer, I’m always looking for ways to improve page load and render time performance issues. One of my biggest annoyances is when I’m waitin...
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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 options, the task of ch...
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End-to-end monitoring for web and mobile applications with Sentry

Performance Monitoring
You can identify and fix performance issues quickly by monitoring your applications "end-to-end" using Sentry performance monitoring and Google Cloud. We’ll exp...
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Deconstructing Distributed Tracing

Performance Monitoring
Let’s start at the beginning. As our libraries and frameworks evolve, our debugging tools need to as well. Back in the early days of the Apache HTTP Server logs...
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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 you’re a backend dev...
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Detecting Main Thread Issues in Mobile Applications

Performance Monitoring
Mobile device users care about three things when it comes to good app performance: Smooth UI Long battery life How quickly the app does what they need it to do ...
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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 always build it in a cle...
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