Personne
Junxiong Wang
Cette personne n’est plus à l’EPFL
Publications associées (12)
Sulfurospirillum diekertiae sp. nov., a tetrachloroethene-respiring bacterium isolated from contaminated soil
Christof Holliger, Julien Maillard, Junxiong Wang
Two anaerobic, tetrachloroethene- (PCE-) respiring bacterial isolates, designated strain ACSDCE T and strain ACSTCE, were characterized using a polyphasic approach. Cells were Gram-stain-negative, motile, non-spore-forming and shared a vibrioid- to spirill ...
2023Distributed Transactional Systems Cannot Be Fast
Rachid Guerraoui, Willy Zwaenepoel, Diego Didona, Junxiong Wang, Panagiota Fatourou
We prove that no fully transactional system can provide fast read transactions (including read-only ones that are considered the most frequent in practice). Specifically, to achieve fast read transactions, the system has to give up support of transactions ...
2019The Complexity of Reliable and Secure Distributed Transactions
The use of transactions in distributed systems dates back to the 70's. The last decade has also seen the proliferation of transactional systems. In the existing transactional systems, many protocols employ a centralized approach in executing a distributed ...
EPFL2018Causal Consistency and Latency Optimality: Friend or Foe?
Rachid Guerraoui, Willy Zwaenepoel, Diego Didona, Junxiong Wang
Causal consistency is an attractive consistency model for geo-replicated data stores. It is provably the strongest model that tolerates network partitions. It avoids the long latencies associated with strong consistency, and, especially when using read-onl ...
ASSOC COMPUTING MACHINERY2018Locking Timestamps versus Locking Objects
Rachid Guerraoui, Junxiong Wang, Tudor Alexandru David
We present multiversion timestamp locking (MVTL), a new genre of multiversion concurrency control algorithms for serializable transactions. The key idea behind MVTL is simple: lock individual timestamps instead of locking objects. After presenting a generi ...
ASSOC COMPUTING MACHINERY2018On the Unfairness of Blockchain
Rachid Guerraoui, Junxiong Wang
The success of Bitcoin largely relies on the perception of a fair underlying peer-to-peer protocol: blockchain. Fairness here essentially means that the reward (in bitcoins) given to any participant that helps maintain the consistency of the protocol by mi ...
2018Distributed Transactions: Dissecting the Nightmare
Rachid Guerraoui, Willy Zwaenepoel, Diego Didona, Junxiong Wang
Many distributed storage systems are transactional and a lot of work has been devoted to optimizing their performance, especially the performance of read-only transactions that are considered the most frequent in practice. Yet, the results obtained so far ...
2018Causal Consistency and Latency Optimality: Friend or Foe? [Extended Version]
Rachid Guerraoui, Willy Zwaenepoel, Diego Didona, Junxiong Wang
Causal consistency is an attractive consistency model for geo-replicated data stores. It is provably the strongest model that tolerates network partitions. It avoids the long latencies associated with strong consistency, and, especially when using read-onl ...
2018On the Unfairness of Blockchain
Rachid Guerraoui, Junxiong Wang
The success of Bitcoin largely relies on the perception of a fair underlying peer-to-peer protocol: blockchain. Fairness here essentially means that the reward (in bitcoins) given to any participant that helps maintain the consistency of the protocol by mi ...
Springer2018How Fast can a Distributed Transaction Commit?
Rachid Guerraoui, Junxiong Wang
The atomic commit problem lies at the heart of distributed database systems. The problem consists for a set of processes (database nodes) to agree on whether to commit or abort a transaction (agreement property). The commit decision can only be taken if al ...
2017