DCIM: DISTRIBUTED CACHE
INVALIDATION
METHOD FOR MAINTAINING CACHE
CONSISTENCY IN
WIRELESS MOBILE NETWORKS
ABSTRACT:
 In mobile ad hoc networks (MANETs) DCIM that is totally
client-based.
 DCIM is a pull-based algorithm that im...
EXISTING SYSTEM :
1. Distributed cache invalidation mechanism
2. COACS Architecture
3. Push-based mechanisms
4. Pull-based...
PROPOSED SYSTEM :
 Hybrid mechanisms (Client – server Authentication)
 MD5 Algorithm
 Time to live (TTL)
 A data which...
OVERALL BLOCK DIAGRAM :
ServerQD (query directories) Caching nodes
Network Failure
Request Response
1. Cache Consistency A...
MODULES
1. Design of caching architecture
2. Parameter functions of COACS in MANETs
3. Client- Server Update Mechanism
4. ...
REFERENCES
[1] T. Andrel and A. Yasinsac, “On Credibility of MANET
Simulations,” IEEE Computer, vol. 39, no. 7, pp. 48-54,...
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DCIM: Distributed Cache Invalidation Method for Maintaining Cache Consistency in Wireless Mobile Networks

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DCIM: Distributed Cache Invalidation
Method for Maintaining Cache Consistency
in Wireless Mobile Networks

Partial Doc , For more project contact : Ambitlick@gmail.com , PH : 8940956123

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DCIM: Distributed Cache Invalidation Method for Maintaining Cache Consistency in Wireless Mobile Networks

  1. 1. DCIM: DISTRIBUTED CACHE INVALIDATION METHOD FOR MAINTAINING CACHE CONSISTENCY IN WIRELESS MOBILE NETWORKS
  2. 2. ABSTRACT:  In mobile ad hoc networks (MANETs) DCIM that is totally client-based.  DCIM is a pull-based algorithm that implements adaptive time to live (TTL), piggybacking, and pre-fetching, and provides near strong consistency capabilities.  Cached data items are assigned adaptive TTL values that correspond to their update rates at the data source, where items with expired TTL values are grouped in validation requests to the data source to refresh them, whereas unexpired ones but with high request rates are pre-fetched from the server.  DCIM is analyzed to assess the delay and bandwidth gains (or costs) when compared to polling every time and push-based schemes.
  3. 3. EXISTING SYSTEM : 1. Distributed cache invalidation mechanism 2. COACS Architecture 3. Push-based mechanisms 4. Pull-based approaches
  4. 4. PROPOSED SYSTEM :  Hybrid mechanisms (Client – server Authentication)  MD5 Algorithm  Time to live (TTL)  A data which stores in cache will be expired if it has not used within threshold time since last update  Simplicity, good performance, flexibility to assign TTL values
  5. 5. OVERALL BLOCK DIAGRAM : ServerQD (query directories) Caching nodes Network Failure Request Response 1. Cache Consistency Algorithm 2. Time to live 3. Bit sequence Algorithm Invalidation Server Bandwidth Utilization Cache Delay Average Time MD5 – Algorithm
  6. 6. MODULES 1. Design of caching architecture 2. Parameter functions of COACS in MANETs 3. Client- Server Update Mechanism 4. Implementation of MD5 algorithm 5. Performance Analysis  Query delay  Overhead traffic
  7. 7. REFERENCES [1] T. Andrel and A. Yasinsac, “On Credibility of MANET Simulations,” IEEE Computer, vol. 39, no. 7, pp. 48-54, July 2006. [2] H. Artail, H. Safa, K. Mershad, Z. Abou-Atme, and N. Sulieman, “COACS: A Cooperative and Adaptive Caching System for MANETS,” IEEE Trans. Mobile Computing, vol. 7, no. 8, pp. 961- 977, Aug. 2008. [3] D. Barbara and T. Imielinski, “Sleepers and Workaholics: Caching Strategies for Mobile Environments,” Proc. ACM SIGMOD, pp. 1- 12, May 1994. [4] G. Cao, “A Scalable Low-Latency Cache Invalidation Strategy for Mobile Environments,” IEEE Trans. Knowledge and Data Eng.,vol. 15, no. 5, pp. 1251-1265, Sept./Oct. 2003. [5] D. Li, P. Cao, and M. Dahlin, “WCIP: Web Cache Invalidation Protocol,” IETF Internet draft, http://tools.ietf.org/html/draft- danli-wrec-wcip-01 , Mar. 2001.

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