A scalable middleware solution for advanced wide-area Web services

Maarten van Steen*, Andrew S. Tanenbaum, Ihor Kuz, Henk J. Sips

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

22 Citations (Scopus)


To alleviate scalability problems in the Web, many researchers concentrate on how to incorporate advanced caching and replication techniques. Many solutions incorporate object-based techniques. In particular, Web resources are considered as distributed objects offering a well-defined interface. We argue that most proposals ignore two important aspects. First, there is little discussion on what kind of coherence should be provided. Proposing specific caching or replication solutions makes sense only if we know what coherence model they should implement. Second, most proposals treat all Web resources alike. Such a one-size-fits-all approach will never work in a wide-area system. We propose a solution in which Web resources are encapsulated in physically distributed shared objects. Each object should encapsulate not only state and operations, but also the policy by which its state is distributed, cached, replicated, migrated, etc.

Original languageEnglish
Pages (from-to)34-42
Number of pages9
JournalDistributed Systems Engineering
Issue number1
Publication statusPublished - 1 Dec 1999
Externally publishedYes


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