How We Handle YouTube API Quota Limits Efficiently

YouTube Data API v3 gives you 10,000 quota units per day. When you're fetching trending videos from 9 regions, quota management becomes critical. Here's how TopVideoHub handles it. Understanding Quota Costs Operation Cost Notes videos.list 1 unit Per request, up to 50 results search.list 100 units Expensive! Avoid when possible channels.list 1 unit Per request videoCategories.list 1 unit Fetch once, cache forever playlistItems.list 1 unit Per request The key insight: videos.list with chart=mostPopular costs 1 unit and returns trending videos. Never use search.list for trending — it costs 100x more. Quota Tracking System class QuotaTracker { private const int DAILY_LIMIT = 10000 ; private const int WARNING_THRESHOLD = 8000 ; private const int CRITICAL_THRESHOLD = 9000 ; public function __construct ( private readonly \PDO $db ) { $this -> ensureTable (); } private function ensureTable (): void { $this -> db -> exec ( " CREATE TABLE IF NOT EXISTS api_quota ( id INTEGER PRIMARY KEY, key_id