Fetch Waterfall in React | Product Blog • Sentry
Have you seen this problem? Or maybe this one? You’ve most likely seen this: export const Component = () => { const [data, setData] = useState() const [load...| Product Blog • Sentry
Have you seen this problem? Or maybe this one? You’ve most likely seen this: export const Component = () => { const [data, setData] = useState() const [load...| Product Blog • Sentry
When a page pauses for even a quarter-second users feel it, and many will tab away before the spinner stops. Front-end performance testing lets us spot those de...| Product Blog • Sentry
Real-time application logs connected to your errors and spans—plus alerts and dashboards to help you debug faster.| Product Blog • Sentry
Discover the key differences between API latency & API response time limit waiting time. Get started effectively monitoring & improving both with Sentry.| Product Blog • Sentry
Slice and dice your trace data with Sentry's new Trace Explorer. Create custom span-based metrics, query custom attributes, and finally sort by timestamp. Give it a shot today.| Product Blog • Sentry
Product, Engineering, and Marketing updates from the developers of Sentry.| Product Blog • Sentry
Learn how to optimize React Native performance in 2025 with expert tips on TTI, 60 FPS, state management, and Sentry monitoring.| Product Blog • Sentry
With Tracing, developers can get insight into the root cause of issues. Learn what everyone needs to know about tracing & how to get started here.| Product Blog • Sentry
With Sentry’s Trace View, identifying & debugging errors just became that much easier. See how Sentry can help with debugging a Slack integration here.| Product Blog • Sentry
For most of 2018, we worked on an overhaul of our underlying event storage system. We'd like to introduce you to the result of this work — Snuba, the primary st...| Product Blog • Sentry
Code Mappings connect errors to the source code in a repository. And since errors can have paths that are different from the tree structure of the repository, C...| Product Blog • Sentry
Boosting Session Replay speed on older iOS devices. See how Sentry’s custom renderer reduced frame drops and improved performance.| Product Blog • Sentry
Connect Sentry MCP to Cursor for live production context, AI-driven fixes, and Seer root-cause analysis—no more copy-paste or context switching in your IDE.| Product Blog • Sentry
Sentry’s new detectors catch bloated HTTP payloads, back-to-back calls, and unsafe queries—so you fix latency and security bugs before users notice.| Product Blog • Sentry
Stop treating AI evals as a silo. Run them like unit tests, via vitest-evals, JUnit XML, and Codecov, to keep quality tight and releases safe.| Product Blog • Sentry
Cache misses can DoS your own app. See how a VSCode update hammered npm in 2016, and how Sentry alerts you to runaway miss rates before costs explode.| Product Blog • Sentry
Debugging during development is easy. You've got a debugger, stack traces, and logs right in front of you. But once your Godot game is in the hands of players, ...| Product Blog • Sentry
A disappearing “Submit” button. A modal stuck half-offscreen. It's not a crash or a performance regression. Just broken UX. Frustrating enough to make users rag...| Product Blog • Sentry
A practical guide to monitoring AI systems at every stage—prototype to production. Learn what to log, trace, and track so you can catch issues early and fix them fast.| Product Blog • Sentry
Writing code is easier than ever. We want to make deleting code just as easy – introducing Reaper for iOS and Android. Reaper was an Emerge Tools product that h...| Sentry Blog RSS
What do the Snapchat, Airbnb, and Spotify iOS apps have in common? They all use order files to speed up their iOS app launch times. Order files re-order your bi...| Sentry Blog RSS
For a while, tracing in Sentry was... fine. You could open up a slow transaction, poke around, find the N+1, and feel like a hero. But if you wanted to answer m...| Product Blog • Sentry
Sentry acquires Emerge Tools, enhancing mobile monitoring. Improve app performance, reduce bugs, and ship lighter apps with this new partnership.| Product Blog • Sentry
When your checkout flow breaks, customers disappear faster than most ‘cutting-edge’ JS metaframeworks. Thankfully, setting up observability for your critical pa...| Product Blog • Sentry
How Sentry built Seer, an AI debugging assistant for distributed apps, with the power of tracing.| Product Blog • Sentry
Downtime only shows up at the most inconvenient moments - See how Sentry's Website Monitoring can help you be more proactive in your debugging.| Product Blog • Sentry
Your app might be down—but at least now you’ll know why. Sentry Uptime Monitoring catches outages fast & connects you to the root cause so you can fix issues before they escalate.| Product Blog • Sentry
Given that 100% of the databases I have interacted with in my professional career have been SQL databases, my data-based mental model (please enjoy my pun) has ...| Product Blog • Sentry
In the early days of the web, writing web applications was simple. Developers generated HTML on the server using a language like PHP, communicated with a single...| Product Blog • Sentry
Hydration failed because the initial ui does not match what was rendered on the server. Great.| whitep4nth3r's Web Feed
Understand what happens before your web page loads to optimize your web page for better performance. Learn more about how to make your web page faster here.| Product Blog • Sentry
Fetch Waterfalls are scenarios where multiple fetch requests are invoked in a sequential manner, not in parallel. This leads to some serious performance degrada...| Product Blog • Sentry
As a developer, what should your reaction be when someone says your website is slow to load? As long as you don’t say, “I just let my users deal with it”, you’r...| Product Blog • Sentry
Google Lighthouse has been one of the most effective ways to gamify and promote web page performance among developers. Using Lighthouse, we can assess web pages...| Product Blog • Sentry
Largest Contentful Paint (LCP) is a Core Web Vital (CWV) metric that marks the point in the page load timeline where the main page content has likely finished l...| Product Blog • Sentry
The term “observability” is a strange one. We understand its value as a way to describe a sophisticated approach to monitoring complex distributed systems and m...| Product Blog • Sentry
Learn about INP: the new Core Web Vital that's replacing FID, and how you can optimize your websites for performance today.| Product Blog • Sentry
In this article, we’re going to look deeply at React Server Components (RSCs). They are the latest innovation in React’s ecosystem, leveraging both server-side ...| Product Blog • Sentry
If you’re a developer, you need a personal website. While billionaire-owned, algorithm-based social media platforms arbitrarily decide what…| Product Blog • Sentry
Remember Grunt files? Gulp files? We rarely need to think about CSS minification, chunking, splitting and post-processing anymore. Here's why.| Product Blog • Sentry
Learn about a common misconception of Cumulative Layout Shift and how to measure and prevent unexpected CLS issues on your web pages.| Product Blog • Sentry
Here's how two small changes improved the TTFB of my website homepage by over 80%.| Product Blog • Sentry
When I first had the idea for this post, I wanted to provide a collection of actionable ways to handle errors caused by API rate limits in…| Product Blog • Sentry
Sentry was born and bred in the Open Source community, and we very much think of ourselves as part of it today. One thing we’ve learned together over the years ...| Product Blog • Sentry
Since our removal of cookies, we’ve seen both positive & negative effects. Learn more about our experience of going cookieless here.| Product Blog • Sentry
While companies tout the importance of user privacy, few put their money where their mouth is – or in our case, actually live and breathe the concept the way we...| Product Blog • Sentry
Your images are 404ing all over the place. You’ve got an angry email from a client. Their site is “broken”, images aren’t loading…| Product Blog • Sentry
Sentry is an Open Source-aligned company, and it’s important to us to financially support our non-commercial colleagues in the community as we continue to enjoy...| Product Blog • Sentry
Sentry started life in 2008 as an unlicensed, 71-line Django plugin. The next year we began publishing it under BSD-3, and ten years later we switched to the Bu...| Product Blog • Sentry
Learn four things to consider when building APIs related to HTTP status codes. And when consuming APIs, don’t do what I did. Read the documentation, understand how the API is designed, and code defensively around unexpected results.| Product Blog • Sentry
Want to hear more? Register for “The Future of Open Source: The State of Sustainability”, on October 26. Sentry is an Open Source-aligned company, and our missi...| Product Blog • Sentry
Learn all about image lazy loading and how it can help improve performance, user experience and core web vitals, which helps boost your search engine rankings.| Product Blog • Sentry
This is the 25th year of the Open Source movement, and as with any social enterprise there is a constant effort to maintain and at times renegotiate the meaning...| Product Blog • Sentry
Yesterday we announced that Codecov is now “Open Source”, and we messed up in two ways: We wrongly used the term Open Source; while unintentional, we should hav...| Product Blog • Sentry
