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compression is not applicable for environments with heavy load of traffic
Protocol Optimization
 Modifies the behavior of TCP across the enterprise WAN Limited performance gains
Very little bandwidth reduction
Caching
 Data caching banks copies of selected files into a large cache storage system during the first time the content was requested and the downloaded by a user
 only works for specific rich media P2P application
caching solutions are bounded by the amount of sessions a single appliance can process.Hence, there is a technical upper barrier to the amount of transactions and requests that be simultaneously handled. Caching systems have to be intrusive and are acting as P2P clients
Local caching of complete files breaches the copyright laws such as the DMCA
Smart Routing
 attempting to service downloading requests from its local domestic network Yields low optimization ratios due to end-users low upload bandwidth and the need to constantly recalculate routing paths.
 

  Approach   Limitation(s)
Bandwidth Management
  prioritizing applications based on pre-defined classification rules  does not increase the overall available bandwidth and with respect to creating additional capacity, it offers zero sum gain
Compression
 attempts to lower bandwidth consumption by eliminating data repetition adequate for mainly low rate data links and text-based content, and not for compressible data (MP3, DiVX)

Learn more about any of these common approaches to application acceleration

The IT industry proposed a number of methods of handling broadband traffic, mainly carrying rich media. All of these methods are alternatives, and each comes to solve the same issues utilizing a different approach. Among these one can mention, based on the chronological appearance in the market, Compression, Bandwidth Management, Caching and Smart Routing.

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There are no doubts about the fact that the Internet has become the main mean of rich media distribution around the globe. Http traffic dominated the internet during the first half of the 90s, and this has gradually changed with the introduction of Peer-to-peer applications. In parallel and slightly shifted in time, legal download services have been introduced, and this added another burden to the internet traffic load. Nowadays, ISP around the globe report that web and P2P are the most dominant applications in respect to Internet traffic. P2P applications alone are responsible for generating between 50% and 70% of a typical ISP's Internet traffic.

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