sentry-sdk-patterns

# Sentry SDK Patterns ## Overview Production patterns for `@sentry/node` (v8+) and `sentry-sdk` (Python 2.x+) covering scoped error context, breadcrumb strategies, event filtering with `beforeSend`, custom fingerprinting for issue grouping, and performance instrumentation with spans. All examples use real Sentry SDK APIs. ## Prerequisites - Sentry SDK v8+ installed (`@sentry/node`, `@sentry/react`, or `sentry-sdk`) - `SENTRY_DSN` environment variable configured - Familiarity with async/await (TypeScript) or context managers (Python) ## Instructions ### Step 1 -- Structured Error Context with Scopes Use `Sentry.withScope()` (TypeScript) or `sentry_sdk.new_scope()` (Python) to attach context to individual events without leaking state across requests. **TypeScript -- Scoped error capture:** ```typescript import * as Sentry from '@sentry/node'; type ErrorSeverity = 'low' | 'medium' | 'high' | 'critical'; interface ErrorOptions { severity?: ErrorSeverity; tags?: Record<string, string>; context?: Record<string, unknown>; user?: { id: string; email?: string }; fingerprint?: string[]; } const SEVERITY_MAP: Record<ErrorSeverity, Sentry.SeverityLevel> = { low: 'info', medium: 'warning', high: 'error', critical: 'fatal', }; export function captureError(error: Error, options: ErrorOptions = {}) { Sentry.withScope((scope) => { scope.setLevel(SEVERITY_MAP[options.severity || 'medium']); if (options.tags) { Object.entries(options.tags).forEach...