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Philip Rowlands

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titleconferencedate
Lightning TalksSREcon26 Americas2026-03-24
Six four‑minute reports cover concrete failures and fixes: a root CA roll reveals that root cert rotation is a distribution problem — services reload trust at…
Lightning on
ACK to the Future: TCP in 2025SREcon25 Europe/Middle East/Africa2025-10-07
Covers concrete tuning: shows Cubic collapsing under 0.05% random loss while BBR tolerates loss and probes RTTs, notes BBR v3 out of tree versus mainline…
Talk on
You Depend on Time, This Is How It Works and You Won’t...SREcon24 Europe/Middle East/Africa2024-10-29
History of calendars to atomic clocks with concrete numbers and systems: the day is 23h56m4s sidereal, Gregorian skipped Oct 4→15 and Sweden once had Feb 30…
Talk on
You Depend on DNS, This Is How It Works and You Won't...SREcon23 Europe/Middle East/Africa2023-10-10
Live TCPdump demo shows a single hostname resolution produces six lookups (A/AAAA plus search path) and that recursion plus caching is why DNS scales. Cache…
Talk on
Software Patching Needn't Be a Can of WormsSREcon19 Europe/Middle East/Africa2019-10-02
Argues that automation replaces tedious manual patching by doing four repeatable steps: inventory, assess and classify, plan rollout and rollback, then repeat…
Talk on
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