networking
2 articles tagged networking.
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TCP Slow Start and Congestion Avoidance
How TCP grows its congestion window from acknowledgements, then slows growth when packet loss signals that the network is overloaded.
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DNS Negative Caching for NXDOMAIN and NODATA
How DNS caches absent names and record types, uses TTLs to avoid repeated queries, and can hide newly created hostnames until entries expire.