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

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...

Find Trending Problems Faster with Escalating Issues

Knowing what issues to hit the snooze button on, or drop everything and push a hotfix for is a common developer dilemma. Similarly to what was discussed in Slee...

Fly.io with Sentry

When developers build and deploy their apps, understanding what's slow or broken in production is more a necessity than a convenience. With Sentry, developers a...

Choosing the Right Metric: A Guide to Percentiles and Averages

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...

Sentry's Open Source Values

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...

The Best and Worst Reasons to Adopt OpenTelemetry

It was a rainy day in Seattle at KubeCon + CloudNativeCon North America in December 2018 when I first encountered the term ‘OpenTelemetry.’ At that time, I was ...

August Product Updates for Sentry

During the month of August we dropped heaps of new features across the entire Sentry platform. From identifying user frustration through rage and dead clicks to...

Making your JavaScript projects less noisy

If you're using Sentry for JavaScript error monitoring, you may be familiar with a common challenge: sifting through noisy, low-value errors that hinder identif...

Introducing Rage & Dead Click Detection for Session Replay

Sentry developers work ridiculously hard to make sure that every update makes the developer experience better. And, just like you, we use Sentry to monitor…Sent...

Sentry Profiling now supports Browser Javascript, React Native, and Ruby

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

Let's Talk About Open Source

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...

July Product Updates for Sentry

During the past month of July, the Sentry dev team dropped new capabilities to help you better understand, prioritize, and respond to errors and performance pro...

Harnessing Distributed Tracing for Application Performance Optimization

Distributed tracing is a powerful technique that allows you to track the flow and timing of requests as they navigate through a system. By linking operations an...

5 Signs You Have Outgrown Your Mobile Monitoring Solution

Imagine you start a new hobby -- let's say bike riding. You don't want to invest a lot in a bike because you're not sure that you'll like it. Luckily, you snag ...

June Product Updates for Sentry

Get ready for another round of new releases that will help take your performance and error troubleshooting to the next level. Over the past month of June, we've...

Detecting Main Thread Issues in Mobile Applications

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 ...

Mastering mobile: Reflecting on three years of mobile growth

Few areas of development have seen as much recent change as mobile. Mobile phone and app usage spiked during the pandemic as we adapted to life with social dist...

Code Refactoring and why you should refactor your code

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...

Sentry Ingestion Domains Updates

The TL;DR: We are going to apply these changes on September 1st, 2023: Ingestion via non-encrypted HTTP will be disabled. DNS A records for sentry.io and *.sent...

Cron Monitoring Now Supports Sentry SDKs, Automatic Set Up, Multi-Environments and More

Last year we introduced Sentry Cron Monitoring (beta) to help developers get code-level context and performance trends for their scheduled jobs. While Crons rem...

May Product Update

The month of May has just ended and pretty much everybody agrees that 2023 is absolutely flying by. Here at Sentry, we’re looking to match the speed of 2023 wit...

Sentry for SvelteKit

We’re happy to announce that the Sentry SvelteKit SDK is now generally available and ready to help you monitor your SvelteKit application. Last year, we entered...

Web Fonts and the Dreaded Cumulative Layout Shift

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 thi...

Tame the performance of code you didn't write: A journey into stable diffusion

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 that we did). We use...

Sentry Profiling: Identify & Eliminate Performance Issues with Code-Level Insights

Users are complaining about slow load times and you’ve thrown logs, traces, and metrics — heck, the entire kitchen sink of performance monitoring — but you stil...

Sleep More; Triage Faster with Sentry

As a developer, triage duty week was often the worst week of my month. Anytime a bug was reported, I’d search for the right environment, wander through logs, pr...

Building better mobile experiences: tips from Riot Games and Nextdoor

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

Introducing Search by User Click for Session Replay: Zero in on Interesting Replays, Faster

You run an e-commerce website and notice a drop in sales on a specific product page. You suspect that users may be encountering an issue with the "Add to Cart" ...

Freeze Bad Deployments in their Tracks with the GitHub Deployment Gate Integration

If you have a large codebase with multiple developers shipping quickly – errors need to be caught quickly as well. To help ensure your code is performant and re...

Confidently Manage Multiple Projects with Sentry's New Spend Allocation and Spike Protection

Today we’re announcing our new Spend Allocation feature and updates to Spike Protection, giving you more control over how your projects consume events. While we...

Syntax × Sentry MMXXIII

Today is a special day at Sentry, as today we welcome Syntax to the family. We've long been fans of Scott and Wes, of what they've built with Syntax, and of the...

Code coverage insights - now in your stack trace

I’m Jerrod, the Head of Codecov @ Sentry. I’d like to share updates from the first major release of our Codecov and Sentry integration and new Codecov pricing f...

Code Mappings and Why They Matter

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...

The New APM: Actionable, Affordable, and Actually Built For Developers

The observability landscape - specifically your traditional Application Performance Monitoring (APM) offerings are failing modern-day developers. These legacy t...

Making Performance Monitoring More Actionable with Sentry

How your code performs isn’t a subjective debate. Well, at least not anymore — in the past few months, Sentry has started telling you exactly what’s slow and wh...

Treat Performance Like A Feature

I, like many of you no doubt reading this, am an engineer with very strong opinions on how software should work. I am not interested in moving fast and breaking...

Get More Context about your Cloud Services with Sentry

A Sentaur who uses Sentry to build Sentry wanted to know where a specific service associated with an issue was being hosted in our cloud environment. This promp...

Sentry’s Frontend Tests: Migrating from Enzyme to React Testing Library

At Sentry, we practice continuous delivery,  which means that code can be released as soon as it’s merged into the main branch. This allows us to iterate quickl...

Introducing OpenTelemetry Support: Take Action on Your Observability Data

As an open source company that grew out of a side project in 2008 to an application and performance monitoring platform (APM) used by over 3.5 million developer...

Support for Next.js Middleware and Edge Routes

Third-party JavaScript libraries provide developers with the tools they need to build modern web experiences, and a bit of cheatcode at times to not have to sta...

Introducing Session Replay from Sentry: Bridge the Gap between Code and UX

You know that annoying bug? The one that doesn’t show up locally? And no matter how many times you try to recreate the environment you can’t reproduce it? You’v...

Getting Started with Jetpack Compose

Recently, we wrote about the demonstrative move to declarative UI. With Jetpack Compose, Android is joining the declarative trends. Jetpack Compose, a new decla...

Profiling Beta for Python and Node.js

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.js to beta. Profili...

Profiling 101: Why profiling? (2/2)

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 series. Part 1: What is p...

Profiling 101: What is profiling? (1/2)

The performance of your app matters. From ensuring a good user experience to retaining users, performance makes a difference in your app’s success. Using the ri...

Local Variables for NodeJS in Sentry

Stack traces show us exactly where an exception occurred, but you can still be left wondering: What arguments or state caused the exception to occur? If you can...

Install Sentry with a Single Command

We’re creating a new way to install and set up Sentry. Starting with Next.js, you’ll be able to set up new Sentry accounts or create new Sentry Next.js projects...

Common Errors in Next.js and How to Resolve Them

Bugs are one of the most troubling aspects of software development; they appear out of nowhere and cause everything to stop working. Most of the time, they can ...

How to get started with Sentry's Unity SDK - Part 1

User experience and performance are two of the most important metrics of any game. You need to ensure that it runs as optimally as possible on any platform. Ide...

How to handle Android exceptions and avoid application crashes

Let's start by stating the obvious: an exception is a problem that occurs during the runtime of a program which disrupts its conventional flow and exception han...

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