# Improving DNS performance with NodeLocalDNS

DevFeed: [Improving DNS performance with NodeLocalDNS](<https://devfeed.tech/articles/improving-dns-performance-with-nodelocaldns-5438.md>)

Original publisher: [Read original article](<https://neon.com/blog/improving-dns-performance-with-nodelocaldns>)

Author: Luca Cittadini

Published: 2025-12-01T16:36:27Z

Content type: article

Language: en

Sources: [Blog -- Neon Docs](<https://devfeed.tech/sources/blog-neon-docs.md>)

Topics: [Kubernetes](<https://devfeed.tech/topics/kubernetes.md>), [Caching](<https://devfeed.tech/topics/caching.md>), [Latency](<https://devfeed.tech/topics/latency.md>), [Amazon EKS](<https://devfeed.tech/topics/amazon-eks.md>), [Network](<https://devfeed.tech/topics/network.md>), [Databases](<https://devfeed.tech/topics/databases.md>), [Process](<https://devfeed.tech/topics/process.md>)

Tags: [aws](<https://devfeed.tech/tags/aws.md>), [caching](<https://devfeed.tech/tags/caching.md>), [clusters](<https://devfeed.tech/tags/clusters.md>), [database](<https://devfeed.tech/tags/database.md>), [dns](<https://devfeed.tech/tags/dns.md>), [engineering](<https://devfeed.tech/tags/engineering.md>), [kubernetes](<https://devfeed.tech/tags/kubernetes.md>), [latency](<https://devfeed.tech/tags/latency.md>), [network](<https://devfeed.tech/tags/network.md>), [performance](<https://devfeed.tech/tags/performance.md>), [postgres](<https://devfeed.tech/tags/postgres.md>), [systems](<https://devfeed.tech/tags/systems.md>)

## AI overview

Neon describes deploying node-local-dns across its Kubernetes fleet to reduce DNS latency for ephemeral Postgres databases. Local caching moves most cache-hit DNS traffic off the network and avoids round trips to CoreDNS, while trading additional node memory for lower latency.

## Source excerpt

At Neon, we run hundreds of thousands of Postgres databases as ephemeral Kubernetes pods. Because of our scale-to-zero feature, every time a user connects to their database, there's a chance that we need to spin up a new Postgres process to serve that connection. The newly spun P...