Beike Product & Technology
Jun 11, 2021 · Backend Development
Impact of System Load on libcurl DNS Resolution and HTTP Timeout
This article investigates how high system load affects libcurl's DNS resolution time and overall HTTP request latency, explains the three timeout error types returned by libcurl, presents experiments comparing host‑based, system‑host, and async‑ares resolution methods, and offers optimization recommendations.
DNSasync-aresbackend
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