Linux DNS Tuning for Performance and Resilience

Optimal DNS Configuration on Linux We often don’t realize the importance of DNS in our infrastructure. Yet the impact when things go (slightly) wrong is huge. Time to have a good look at improving our DNS configuration. The goal is simple: improve performance, and make it more resilient to issues and attacks. How DNS Resolving Works When your Linux system needs to know the IP address of a particular host, it will use gethostbyname(3) function. This will use the nsswitch […]

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