Perplexity (@perplexity_ai) published CobbleDB: a key-value store built in two months by two engineers and hundreds of proactive always-on AI agents for Perplexity search web-content serving. After replacing DynamoDB, median batch-read latency fell from 31.4 ms to 5.60 ms and p99 from 123 ms to 24.2 ms; they plan to open-source it for other AI search teams.

Key Takeaways

  • ✓Two engineers plus hundreds of AI agents built production CobbleDB in two months.
  • ✓Vs DynamoDB, median/p99 batch-read latency dropped ~5× (31.4→5.6 ms, 123→24.2 ms).
  • ✓Perplexity plans to open-source CobbleDB for other AI search teams.
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