BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Achieving the Full Potential of State Machine Replication: High Th
 roughput\, Low Latency\, Constant Availability - Julian Moraru\, Carnegie 
 Mellon University
DTSTART:20140313T100000Z
DTEND:20140313T110000Z
UID:TALK51261@talks.cam.ac.uk
CONTACT:Microsoft Research Cambridge Talks Admins
DESCRIPTION:Redundancy through state replication is the primary mechanism 
 for achieving fault tolerance in distributed systems. State machine replic
 ation (SMR) is used extensively both within datacenters\, where machine fa
 ilures are common and must be tolerated\, and in the wide-area\, to ensure
  that data is close to all the clients that access it\, and to guard again
 st data loss and service unavailability caused by datacenter outages. ! To
 day\, the SMR protocol of choice in systems where performance and availabi
 lity are critical is Paxos. Paxos does not depend on external failure dete
 ctors or reconfiguration services to tolerate the failure of a minority o
 f replicas\, and therefore\, in theory\, systems using Paxos have high ava
 ilability. However\, because of the need to optimize for high performance\
 , the elegance of the core protocol does not fully extend to practical imp
 lementations. ! This work aims to plant practical SMR implementation aspec
 ts in a firm theoretical ground\, and thus to enable SMR designs that ach
 ieve high throughput through near-perfect load balancing\, near-optimal re
 quest processing latency (especially in the wide area)\, and high performa
 nce robustness when confronted with failures and slow replicas. The talk w
 ill focus on Egalitarian Paxos\, a new variant of the Paxos protocol. In E
 Paxos\, all replicas perform the same functions simultaneously to ensure l
 oad balancing\, constant availability\, and low commit latency. We will al
 so show the benefits of in-depth exploration of other aspects of state ma
 chine replication—aspects heretofore belonging only to the realm of prac
 tical optimizations—such as time leases.
LOCATION:Small Lecture Theatre\, Microsoft Research Ltd\, 21 Station Road\
 , Cambridge\, CB1 2FB
END:VEVENT
END:VCALENDAR