Julia Evans • 10/27/2024

Using less memory to look up IP addresses in Mess With DNS

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The article explains how the author solved out-of-memory (OOM) issues in their 'Mess With DNS' service. The primary memory hog was a 117MB IP-to-ASN lookup database. The author chronicles several optimization attempts, including using SQLite and tries, before settling on methods like data deduplication and switching to the more efficient `netip.Addr` type, ultimately saving 70MB of memory.

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#go #memory optimization #ip lookup
Using less memory to look up IP addresses in Mess With DNS

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