Implementing recoverable requests using queues
SIGMOD '90 Proceedings of the 1990 ACM SIGMOD international conference on Management of data
Principles of transaction processing: for the systems professional
Principles of transaction processing: for the systems professional
Implementing E-Transactions with Asynchronous Replication
IEEE Transactions on Parallel and Distributed Systems
e-Transactions: End-to-End Reliability for Three-Tier Architectures
IEEE Transactions on Software Engineering
A Pragmatic Implementation of e-Transactions
SRDS '00 Proceedings of the 19th IEEE Symposium on Reliable Distributed Systems
EOS: exactly-once E-service middleware
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
Ensuring e-transaction through a lightweight protocol for centralized back-end database
ISPA'04 Proceedings of the Second international conference on Parallel and Distributed Processing and Applications
Ensuring e-Transaction with Asynchronous and Uncoordinated Application Server Replicas
IEEE Transactions on Parallel and Distributed Systems
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When dealing with fault tolerance in three-tier systems, two major problems need to be addressed, that is how to prevent duplicate transaction executions when classical timeout based retransmission logics are employed, and how to ensure the agreement among the back-end databases despite failures (a transaction needs to be aborted or committed at all the involved databases independently of the failure scenario). In this paper we address these problems by proposing a fault tolerant protocol that, unlike previous solutions, (i) avoids the additional phase of storing the client request into a persistent message queue and (ii) avoids explicit coordination of middle tier application servers (during both normal behavior and fail-over). Our protocol reduces therefore the overhead imposed on the end-to-end interaction, thus improving user perceived responsiveness, and provides better scalability.