Instrumenting Our Frontend Test Suite (...and fixing what we found)

Adding Instrumentation to Jest Here at Sentry, we like to dogfood our product as much as possible. Sometimes, it results in unusual applications of our product ...

Root out the odd operation with Operations Breakdown

Transactions are sent when your service receives a request and sends a response, like an API call or a page load. Within each transaction is a series of operati...

Become A Hidden Champion. Work With Me In Vienna.

A term of business endearment — if there is such a thing — is to call a company a hidden champion. It’s bestowed on businesses who quietly sustain their success...

Jamstack June: A Recap

Like any jam session, Jamstack June must end. But not before we reprise a few of our greatest licks of the month: Our Next.js SDK monitors your Next.js projects...

Why Debugging JavaScript Sucks — And What You Can Do About It

What makes JavaScript great is also what makes it frustrating to debug. Its asynchronous nature makes it easy to manipulate the DOM in response to user events, ...

Jamstack, Next.js, Netlify, and Sentry: How The Pieces Fit

Jamstack (Javascript + APIs + Markup) is a web architecture that combines the convenience of pre-built websites with the capacity to handle custom APIs and serv...

Find the Root Cause Faster with Trace View and Trace Navigator

Like a bratty teenager, traditional monitoring answers your questions, but does so in a terse, unhelpful manner: Why is my page slow? Guess it’s the API call. I...

Sentry Application Monitoring for Next.js

As you could probably tell from the title, we shipped an SDK for Next.js. This means you can capture errors, measure performance, manage releases, configure sus...

Better Alerts [as in, far more specific and just generally way better]

A couple of weeks back, we broke sign-ups. And in the most meta fashion, we learned about this because someone here had the foresight to set up an alert in Sent...

Dogfooding Chronicles: Never Be Content With Your Content (Security Policies)

As the Internet evolves, so must our security mechanisms. It’s why same-origin policies (a Netscape-era directive in which resources from one origin are unable ...

Establishing the New Normal in Pandemic-Aftertimes

[Three Hundred and Eighty-One] [Three hundred and eighty-one]. The number of days it's been since our Sentry offices shut down, in what we believed at that time...

No-code AWS Lambda Monitoring

Auto-instrumenting AWS Lambda Monitoring didn’t originate through a focus group or business plan. It started as a hackathon project that addressed the tedium of...

Great Moments in Application Monitoring

The consequences of poor application performance are both real and terrifying: lost customers, lost trust from your team, and lost confidence in your abilities....

Measuring Success with Sentry

In the early days of web development, there was one way to measure code: WTFs per minute. It was a metric that could be applied across all languages, as every d...

Supporting Native Android Libraries Loaded From APKs

Like mechanics who restore their own cars or plastic surgeons who self-rhinoplasty, our developers put their skills to interesting uses during their free time. ...

Measuring User Experience with Web Vitals

Top of search for you means top of mind for your customers. And with Google’s upcoming Page Experience update to Web Vitals taking place in a few weeks, now’s t...

Silencing Distractions with Review List and Automations

Responding to and ignoring notifications can be a full-contact sport. It makes sense, though, from GitHub, Slack, to Jira and Sentry; our world revolves around ...

Slow and Steady: Converting Sentry’s Entire Frontend to TypeScript

Recently, Sentry converted 100% of its frontend React codebase from JavaScript to TypeScript. This year-long effort spanned over a dozen members of the engineer...

Using Feature Flags in Sentry

From testing in production to running A/B tests, feature flags have a range of uses. At Sentry, one way we use feature flags is to safely allow beta access to n...

A Sanity Listicle for Mobile Developers

Just like that Mobile March Madness 2021 is almost in our rearview. Before we look to April, let’s recap some of our most notable mobile updates from this past ...

Using Sentry Performance To Make Sentry Performant

Like many companies, Sentry uses feature flags to determine when certain users see certain features. Recently, we decided to switch our feature flag software to...

Performance Monitoring for Android Applications

Android is arguably the most ubiquitous operating system in the world. Whether it's a tablet, phone, folding phone, computer, TV, or IoT device, chances are you...

Building Dark Mode

Like many companies, we have a Hack Week at Sentry. In 2017, we coded an app which blared entrance music for anyone who stepped foot in our office. In 2019, we ...

Performance Monitoring Support for React Native

March Mobile Madness continues with Performance support for React Native. Our friend, Jenn Mueng shares how Performance supports his mobile appliction. In addit...

Issue Detail Performance Improvements

One of Sentry’s most-trafficked pages is our issue details page, as it helps our customers understand the root cause of an error. For those of you who are new t...

With Flutter and Sentry, You Can Put All Your Eggs in One Repo

This month we’re updating several of our mobile SDKs. You might think it’s madness… Mobile March Madness. First up is Flutter. It’s fair to say that all of us h...

Python 3 Compatibility: What To Know

Compatibility is a moving target. This is particularly true for backwards-incompatible languages such as Python 3, as it forces developers to shoehorn Python 3 ...

3 Ways to Improve JavaScript Applications

In January we brought Release Health to JavaScript. This month we've been thinking about the overall experience for JavaScript developers, some could call it Ja...

Series D: Moving Faster and (Not) Breaking Things

In the software lifecycle, you need to know what is affecting the customer from your frontend code to your underlying infrastructure. However, no one to date ha...

Close the Loop with User Feedback

Everyone's software crashes. As an engineer, you don't feel your users' frustration unless they reach out to customer support, write bad reviews, or tweet about...

Asking The Right Query With Discover

Successful businesses don’t sort data — they shape it. Discover, Sentry’s query builder, gives form to your event data so you can measure performance and trace ...

How to use Sentry Attachments with Mobile Applications

In a previous life as an Android developer, a customer reported a nasty bug that we didn't know how to fix. After what felt like countless hours of debugging an...

Track Session Data with Sentry for JavaScript

It’s January 2021 and you've probably broken five out of six New Year's Resolutions. I don't want to be the reason for breaking your last one, so I’ll cut right...

A Gem of an Update: Performance Monitoring for Ruby

https://sentry.io/resources/distributed-tracing-infographic/In order to continuously improve your Ruby application, you need to understand everything your code ...

Sentry Receives SOC 2 Type 2 Certification

No matter your business, keeping customer data secure is critical toward keeping your customer’s trust. With the rise in data breaches (and subsequent security ...

Sentaurs and Celebrations

At 9AM Pacific time, entirely too early for most West Coast tech employees, Sentry joined a video call and proceeded to take a journey. Curiosity became enthusi...

How Slow is Slow?

Slow is the new downtime. What you once feared from a downed website — decreased conversion rates, lower page ranks, abandoned carts — now applies to a slow-loa...

Support for Database Performance Monitoring in Node

Application performance monitoring is great because it lets you see whether your application is fast or slow, and which parts need speeding up. For Node develop...

Investing in the Future of Frontend

Why we’re investing in the Future Of Frontend Nearly a decade ago, Marc Andreesen uttered the infamous quote “software is eating the world”. Since then, the pro...

Sentry Fall Semester: Web Vitals 101

To improve front-end performance in your application, it’s important to understand what kind of problems users are experiencing. They may be encountering slow l...

Investigating Performance Regressions with Trends

To us, dogfooding means using Sentry to improve Sentry. Here in this article, you’ll see how we used Performance to improve our search infrastructure. Recently,...

Notice of (Internet) Address Change

As part of continuing projects to increase the reliability of sentry.io, the IP addresses associated with the service will be changing soon. These changes may r...

Verifying Large Refactors in Production with Sentry

Sentry is excellent at capturing runtime errors in your applications. With the recent additions of performance monitoring and release health, it can further hel...

Sentry for Spring Boot & Logback

While Spring Boot provides everything developers need to build applications, it leaves operational aspects of debugging issues to the developers and third-party...

Debug errors in Lambda functions

Troubleshooting production issues in Lambda environments is often challenging. CloudWatch requires developers to comb through logs, search for relevant terms th...

Get Sentry Alerts in Microsoft Teams

Microsoft wanted to give teams more ways to be well... a team. So they built Microsoft Teams, a communication platform for instant messaging, voice & video call...

Escalate Critical Issues with PagerDuty and Sentry

Connecting Sentry and PagerDuty is a great way to make sure important issues don't get stuck in backlog purgatory. But sometimes there's a drop-everything criti...

Issue Tracking with Linear and Sentry

This integration was built on the Sentry Integration Platform — a new way for developers to build workflows on top of Sentry. Interested in creating an integrat...

Finding and Fixing Django N+1 Problems

The Django Python framework allows people to build websites extremely fast. One of its best features is the Object-relational mapper (ORM), which allows you to ...

The Great Irony of Serverless Computing

Working with Serverless computing is like riding an electric bike. You get speed, flexibility, automatic assistance to scale with ease. Development is usually h...

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