transactions
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Reading Group. Unifying Timestamp with Transaction Ordering for MVCC with Decentralized Scalar Timestamp
Unlike many of my recent summarier, I will mskr this one short, I promise. “Unifying Timestamp with Transaction Ordering for MVCC with Decentralized Scalar Timestamp” NSDI’21 paper proposes a mechanism to order transactions in multi-version distributed data-stores. One of the problems with distributed transactions is the ordering required to achieve consistency. In particular, we often…
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Reading Group. Exploiting Symbolic Execution to Accelerate Deterministic Databases
We have covered 60 papers in our reading group so far! The 60th paper we explored was “Exploiting Symbolic Execution to Accelerate Deterministic Databases” from ICDCS’20. I enjoyed the paper quite a lot, even though there are some claims I do not necessarily agree with. The paper solves the problem of executing transactions in deterministic…
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Reading Group Special Session: Distributed Transactions in YugabyteDB
When: May 11th at 12:00 pm EST Who: Karthik Ranganathan. Karthik Ranganathan is a founder and CTO of YugabyteDB, a globally distributed, strongly consistent database. Prior to Yugabyte, Karthik was at Facebook, where he built the Cassandra database. In this talk, Karthik will discuss Yugabyte’s use of time synchronization and Raft protocol along with some…
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Reading Group. Performance-Optimal Read-Only Transactions
Last meeting we looked at “Performance-Optimal Read-Only Transactions” from OSDI’20. This paper covers important topics of transactional reads in database/data-management systems. In particular, the paper discusses “one-shot” read-only transactions that complete in 1 network round-trip-time (RTT) without blocking and bloated and expensive messages. If this sounds too good to be true, it is. Before presenting…
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Reading Group. Aria: A Fast and Practical Deterministic OLTP Database.
In our 33rd reading group meeting, we discussed “Aria: A Fast and Practical Deterministic OLTP Database.” by Yi Lu, Xiangyao Yu, Lei Cao, Samuel Madden. We had a very nice presentation by Alex Miller: Quick Summary Aria is a transaction protocol, heavily influenced by Calvin, and it largely adopts Calvin’s transaction model, with one big…
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Ocean Vista: Gossip-Based Visibility Control for Speedy Geo-Distributed Transactions
Ocean Vista On Wednesday we had a presentation and discussion of the Ocean Vista (OV) replication and distributed transaction protocol. OV works in the WANs, where each region has all data-partitions, and transactions can originate in any region. OV separates replication from transaction execution, by making replication conflict-free with a FastPaxos-inspired protocol. For the transaction…
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Review: Implementing Linearizability at Large Scale and Low Latency
In this post I will talk about Implementing Linearizability at Large Scale and Low Latency SOSP 2015 paper. Linearizability, the strongest form of consistency, can be very important in large scale data storage systems, although many such systems either do not implement linearizability or do not fully expose serializable operation to the clients. The later type…
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