notion-reliability-patterns

# Notion Reliability Patterns ## Overview Production-grade reliability patterns for Notion integrations. Covers graceful degradation with offline cache when Notion is unavailable, retry with exponential backoff for transient failures, circuit breaker to prevent cascade failures, health check endpoints for monitoring, and fallback content serving when the API is unreachable. All patterns use `Client` from `@notionhq/client` and handle Notion-specific error codes. ## Prerequisites - `@notionhq/client` v2.x installed (`npm install @notionhq/client`) - `lru-cache` for in-memory caching (`npm install lru-cache`) - Python: `notion-client` installed (`pip install notion-client`) - `NOTION_TOKEN` environment variable set - Understanding of circuit breaker and retry patterns ## Instructions ### Step 1: Retry with Exponential Backoff The Notion SDK has built-in retries, but you can customize the behavior for better control over transient errors (429, 500, 502, 503). ```typescript import { Client, isNotionClientError, APIErrorCode } from '@notionhq/client'; // Classify errors as transient (retryable) vs permanent function isTransientError(error: unknown): boolean { if (isNotionClientError(error)) { return ( error.code === APIErrorCode.RateLimited || error.code === APIErrorCode.InternalServerError || error.code === APIErrorCode.ServiceUnavailable || error.code === 'notionhq_client_request_timeout' ); } // Network errors are transient if (e...