Sentry is an application monitoring and error-tracking platform that helps developers detect, diagnose, and fix issues in software.
Its main capabilities include:
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Error tracking: Automatically captures crashes and exceptions from web, mobile, backend, and desktop applications.
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Performance monitoring: Measures transaction times, slow database queries, API latency, and bottlenecks.
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Session Replay: Records user sessions so you can see what happened before an error occurred.
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Profiling: Helps identify CPU-intensive or inefficient code paths.
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Release tracking: Connects errors to specific deployments or releases to see when issues were introduced.
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Alerts and integrations: Sends notifications through tools like Slack, Microsoft Teams, GitHub, Jira, and others.
Sentry supports many programming languages and frameworks, including:
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JavaScript (React, Vue, Angular, Next.js)
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Python (Django, Flask, FastAPI)
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Node.js
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Java
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.NET
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Go
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PHP
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Ruby
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Swift (iOS)
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Kotlin (Android)
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Flutter
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React Native
A typical workflow is:
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Install the Sentry SDK in your application.
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Configure it with your project DSN.
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Deploy your app.
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When an exception occurs, Sentry automatically captures:
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Stack trace
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Error message
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Environment (production, staging, etc.)
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User context (if configured)
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Breadcrumbs (events leading up to the error)
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Developers use the Sentry dashboard to investigate and resolve the issue.
For example, in a Node.js app:
Sentry is widely used because it provides much more context than application logs alone, making production issues significantly easier to reproduce and fix.
If you meant something specific about Sentry—such as setup, pricing, React integration, or how it compares to another monitoring tool like Datadog or New Relic—let me know.