canva-performance-tuning

# Canva Performance Tuning ## Overview Optimize Canva Connect API performance. The REST API at `api.canva.com/rest/v1/*` has per-user rate limits and async operations (exports, uploads, autofills) that require polling. ## Caching Strategy ### Design Metadata Cache ```typescript import { LRUCache } from 'lru-cache'; // Design metadata changes infrequently — cache aggressively const designCache = new LRUCache<string, any>({ max: 500, ttl: 5 * 60 * 1000, // 5 minutes }); async function getDesignCached(designId: string, token: string) { const cached = designCache.get(designId); if (cached) return cached; const data = await canvaAPI(`/designs/${designId}`, token); designCache.set(designId, data); return data; } // IMPORTANT: Do NOT cache these — they expire quickly: // - Thumbnail URLs: expire in 15 minutes // - Edit/view URLs: expire in 30 days // - Export download URLs: expire in 24 hours ``` ### Redis Cache for Distributed Systems ```typescript import Redis from 'ioredis'; const redis = new Redis(process.env.REDIS_URL); async function cachedCanvaCall<T>( key: string, fetcher: () => Promise<T>, ttlSeconds = 300 ): Promise<T> { const cached = await redis.get(key); if (cached) return JSON.parse(cached); const result = await fetcher(); await redis.setex(key, ttlSeconds, JSON.stringify(result)); return result; } // Cache brand template list — rarely changes const templates = await cachedCanvaCall( 'canva:brand-templates:list', () => ...