Bradler, Dirk ; Kangasharju, Jussi ; Mühlhäuser, Max (2008)
Optimally Efficient Prefix Search and Multicast in Structured P2P Networks.
Report, Bibliographie
Kurzbeschreibung (Abstract)
Searching in P2P networks is fundamental to all overlay networks. P2P networks based on Distributed Hash Tables (DHT) are optimized for single key lookups, whereas unstructured networks offer more complex queries at the cost of increased traffic and uncertain success rates. Our Distributed Tree Construction (DTC) approach enables structured P2P networks to perform prefix search, range queries, and multicast in an optimal way. It achieves this by creating a spanning tree over the peers in the search area, using only information available locally on each peer. Because DTC creates a spanning tree, it can query all the peers in the search area with a minimal number of messages. Furthermore, we show that the tree depth has the same upper bound as a regular DHT lookup which in turn guarantees fast and responsive runtime behavior. By placing objects with a region quadtree, we can perform a prefix search or a range query in a freely selectable area of the DHT. Our DTC algorithm is DHT-agnostic and works with most existing DHTs. We evaluate the performance of DTC over several DHTs by comparing the performance to existing application-level multicast solutions, we show that DTC sends 30–250% fewer messages than common solutions.
| Typ des Eintrags: | Report |
|---|---|
| Erschienen: | 2008 |
| Autor(en): | Bradler, Dirk ; Kangasharju, Jussi ; Mühlhäuser, Max |
| Art des Eintrags: | Bibliographie |
| Titel: | Optimally Efficient Prefix Search and Multicast in Structured P2P Networks |
| Sprache: | Englisch |
| Publikationsjahr: | 8 August 2008 |
| Ort: | Darmstadt |
| Verlag: | Technische Universität |
| Reihe: | Telecooperation report |
| Band einer Reihe: | 09 |
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| Kurzbeschreibung (Abstract): | Searching in P2P networks is fundamental to all overlay networks. P2P networks based on Distributed Hash Tables (DHT) are optimized for single key lookups, whereas unstructured networks offer more complex queries at the cost of increased traffic and uncertain success rates. Our Distributed Tree Construction (DTC) approach enables structured P2P networks to perform prefix search, range queries, and multicast in an optimal way. It achieves this by creating a spanning tree over the peers in the search area, using only information available locally on each peer. Because DTC creates a spanning tree, it can query all the peers in the search area with a minimal number of messages. Furthermore, we show that the tree depth has the same upper bound as a regular DHT lookup which in turn guarantees fast and responsive runtime behavior. By placing objects with a region quadtree, we can perform a prefix search or a range query in a freely selectable area of the DHT. Our DTC algorithm is DHT-agnostic and works with most existing DHTs. We evaluate the performance of DTC over several DHTs by comparing the performance to existing application-level multicast solutions, we show that DTC sends 30–250% fewer messages than common solutions. |
| Freie Schlagworte: | Secure Services |
| Fachbereich(e)/-gebiet(e): | 20 Fachbereich Informatik 20 Fachbereich Informatik > Peer-to-Peer Netzwerke 20 Fachbereich Informatik > Telekooperation LOEWE LOEWE > LOEWE-Zentren LOEWE > LOEWE-Zentren > CASED – Center for Advanced Security Research Darmstadt |
| Hinterlegungsdatum: | 31 Dez 2016 12:59 |
| Letzte Änderung: | 25 Jan 2022 10:31 |
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