Concept

Microsoft SQL Server

Publications associées (93)

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Middleware support for the "Internet of Things"

Karl Aberer, Manfred Hauswirth, Ali Salehi

The ``Internet of Things'' intends to enhance items of our everyday life with information and/or processing and interconnect them, so that computers can sense, integrate, present, and react on all kinds of aspects of the physical world. As this implies tha ...

5th GI/ITG KuVS Fachgespräch "Drahtlose Sensornetze"2006

Cherry Picking: A Semantic Query Processing Strategy for the Evaluation of Expensive Predicates

A common requirement of many scienti c applications is the ability to process queries involving expensive predicates corresponding to user programs. Optimizing such queries is hard because static cost predictions and statistical estimates are not applicabl ...

2005

A comparative evaluation of transparent scaling techniques for dynamic content web servers

Willy Zwaenepoel

We study several transparent techniques for scaling dynamic content web sites, and we evaluate their relative impact when used in combination. Full transparency implies strong data consistency as perceived by the user, no modi- fications to existing dynami ...

2005

Caching Dynamic Web Content in J2EE Applications: An Automated Solution Using Aspect Programming

Willy Zwaenepoel, Sumit Mittal

Caching is an effective means for reducing load on web servers, especially for those that dynamically generate web documents in J2EE applications. While adding caching to the application server can greatly reduce response times for requests, the logic to e ...

2004

C-JDBC: Flexible Database Clustering Middleware

Willy Zwaenepoel, Emmanuel Cecchet

Large web or e-commerce sites are frequently hosted on clusters. Successful open-source tools exist for clustering the front tiers of such sites (web servers and application servers). No comparable success has been achieved for scaling the backend database ...

2004

Replicated Invocation

André Schiper, Stefan Pleisch, Arnas Kupsys

In today's systems, application are composed from various components that may be located on different machines. The components may have to collaborate in order to service a client request. More specifically, a client request to one component may trigger a ...

2003

The Database State Machine Approach

Rachid Guerraoui, André Schiper, Fernando Pedone

Database replication protocols have historically been built on top of distributed database systems, and have consequently been designed and implemented using distributed transactional mechanisms, such as atomic commitment. We present the Database State Mac ...

2003

Evaluating the performance of distributed agreement algorithms

Nowadays, networked computers are present in most aspects of everyday life. Moreover, essential parts of society come to depend on distributed systems formed of networked computers, thus making such systems secure and fault tolerant is a top priority. If t ...

EPFL2003

Pragmatic Type Interoperability

Rachid Guerraoui, Patrick Eugster

Providing type interoperability consists in ensuring that, even if written by different programmers, possibly in different languages and running on different platforms, types that are supposed to represent the same software module are indeed treated as one ...

2003

Fault-tolerant and transactional mobile agent execution

Stefan Pleisch

Mobile agents constitute a computing paradigm of a more general nature than the widely used client/server computing paradigm. A mobile agent is essentially a computer program that acts autonomously on behalf of a user and travels through a network of heter ...

EPFL2002