Glossary · Hosting & DevOps
Sentry
Overview
What Sentry does
Sentry is an application monitoring platform focused on errors and performance. When your code throws an exception or crashes, the Sentry SDK captures the full stack trace, the release version, and a trail of 'breadcrumbs'—the events leading up to the failure—plus device or request context. It then groups similar errors into a single issue, so a spike affecting thousands of users shows up as one actionable ticket instead of noise.
Error tracking and performance monitoring
Sentry has two core capabilities. Error monitoring alerts you the moment a bug reaches production and tells you exactly which line, commit, and users are affected. Performance monitoring (tracing) measures how long transactions take across your frontend, backend, and database, surfacing slow endpoints and N+1 queries. Add-ons like Session Replay let you watch a recording of what the user did before the error occurred.
How a full-service team uses Sentry
In backend, full-stack, and mobile projects—React Native and Flutter included—we wire Sentry into the codebase and CI/CD so every release is tagged and every regression is traceable to the commit that caused it. Alerts route into Slack for fast triage, and as part of ongoing app maintenance and support, Sentry data tells us which bugs to prioritize by real user impact rather than guesswork.
Where we use it
Related Zen in Tech services
How our team puts Sentry to work in real projects.
FAQ
Sentry — common questions
Is Sentry free?
Yes. Sentry has a free tier and is open source, so it can be self-hosted at no license cost. Paid cloud plans scale with the volume of events, traces, and replays you send.
Sentry vs Datadog: what's the difference?
Sentry is developer-focused error tracking and code-level debugging; Datadog is broader infrastructure and APM observability. They overlap on performance, and many teams run both—Sentry for fixing bugs, Datadog for system health.
What languages and frameworks does Sentry support?
Sentry has SDKs for JavaScript, Python, PHP, Ruby, Java, Go, and .NET, plus mobile platforms including iOS, Android, React Native, and Flutter, so most stacks are covered.
Need Sentry done right?
Book a free consultation and we’ll map the fastest, most cost-effective path for your project.
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