Engineering
"Swizzling" iOS functions in Swift
How to hook pure Swift functions at runtime using an in-process debugger.
Engineering
Reverse Engineering iOS to Fix SDK Crashes
We reverse-engineered a private iOS framework to uncover why iPadOS 26 broke type casting in our SDK.
Engineering
Keeping Up With the Python Ecosystem
The Sentry Python SDK has built-in support for more than 60 popular packages. This is how we make sure we actually support what we claim to be supporting.
Engineering
Tablecloth Trick: Migrating Issue Alerts to a New System
How we silently switched error issue alerts to a new system.
Engineering
From /users/123 to /users/:id: A Guide to Route Parametrization
How Sentry's JS SDKs figure out your dynamic route names to make querying your issues easier.
Engineering
Shipping Features Without Writing Code
How Cursor's background agent added C# support to Sentry with minimal prompting.
Engineering
Building a Product Tour in React
How we went about building a performant, in-app product tour API using only React
Engineering
Formatting SQL in the Browser Using PEG
Writing a rudimentary SQL parser and formatter in JavaScript that handles Sentry's need to format invalid SQL and output into JSX.
Engineering
How Sentry queries unstructured data in ClickHouse 62x faster
We repurposed a hashtable to make ClickHouse significantly faster for analytical queries
Engineering
Debugging Query Rate Limiting in Sentry
Snuba, the primary storage and query service for event data that powers Sentry in production, has historically been doing rate limiting under the hood, making…
Engineering
Better Code Rendering Through Virtualization
How we rebuilt Codecov's code renderer from the ground up to be faster and more efficient, utilizing virtualization.
Engineering
Enabling Out-of-the-Box Performance Insights in Unity Games with the Sentry SDK
Learn how we built the autoinstrumentation in the Unity SDK via IL Weaving
Engineering
Perfectly Fitting Text to Container in React
Building a React component that automatically updates its font size to fill its parent element as fully as possible.
Engineering
Mobile App Launch Profiling
See what's happening in your app before your first line of code can even run.
