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90c48f20e0
- Add maxKeys limit (10,000) to NodeCache to prevent unbounded memory growth - Skip caching undefined values when GeoIP/ASN lookups fail (e.g., when MaxMind DB not configured) - Add periodic cache statistics logging every 5 minutes for monitoring - Fixes memory leak where cache would grow indefinitely with high request volumes The maxKeys limit uses LRU eviction, so oldest entries are automatically removed when the limit is reached. With ~10k requests/day and 5min TTL, 10k keys provides ample headroom while preventing OOM issues. Fixes #2120
21 lines
689 B
TypeScript
21 lines
689 B
TypeScript
import NodeCache from "node-cache";
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import logger from "@server/logger";
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// Create cache with maxKeys limit to prevent memory leaks
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// With ~10k requests/day and 5min TTL, 10k keys should be more than sufficient
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export const cache = new NodeCache({
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stdTTL: 3600,
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checkperiod: 120,
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maxKeys: 10000
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});
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// Log cache statistics periodically for monitoring
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setInterval(() => {
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const stats = cache.getStats();
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logger.debug(
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`Cache stats - Keys: ${stats.keys}, Hits: ${stats.hits}, Misses: ${stats.misses}, Hit rate: ${stats.hits > 0 ? ((stats.hits / (stats.hits + stats.misses)) * 100).toFixed(2) : 0}%`
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);
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}, 300000); // Every 5 minutes
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export default cache;
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