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UID:158@lincs.fr
DTSTART;TZID=Europe/Paris:20140702T140000
DTEND;TZID=Europe/Paris:20140702T150000
DTSTAMP:20170313T171307Z
URL:https://www.lincs.fr/events/tba/
SUMMARY:Approximately Synchronous Distributed Systems
DESCRIPTION:Applications hosted within the datacenter often rely on
 distributed services such as Zookeeper\, Chubby\, and Spanner for
 fault-tolerant storage\, distributed coordination\, and transaction
 support.  These systems provide consistency and availability in the
 presence of limited failures by relying on sophisticated distributed
 algorithms such as state machine replication.  Unfortunately\, these
 distributed algorithms are expensive\, accrue additional latency\, suffer
 from bottlenecks\, and are difficult to optimize.  This state of affairs
 is due to the fact that distributed systems are traditionally designed
 independently from the underlying network and supporting protocols\, making
 worst-case assumptions (e.g.\, complete asynchrony) about its
 behavior.\n\nWhile this is reasonable for wide-area networks\, many
 distributed applications are however deployed in datacenters\, where the
 network is more reliable\, predictable\, and extensible.  Our position
 is that codesigning networks and distributed systems in order to operate
 under an "approximately synchronous" execution model can have substantial
 benefits in datacenter settings.  We will illustrate this using two case
 studies in this talk: Speculative Paxos -- a distributed coordination
 service for datacenters that relies on the network to exhibit approximately
 synchronous behavior in the normal case\, while still remaining correct if
 the network exhibits weaker properties\, and Optimistic Replicated
 Two-Phase Commit (OR-2PC) -- a new distributed transaction protocol that
 uses a new optimistic ordering technique\, based on loosely synchronized
 clocks in order to improve both throughput and latency.
CATEGORIES:Seminars,Youtube
LOCATION:LINCS Meeting Room 40\, 23\, avenue d'Italie\, Paris\, 75013\,
 France
GEO:48.8283983;2.3568972000000485
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TZID:Europe/Paris
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DTSTART:20140330T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
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