CacheFlow Introduces Global Content Management Solution; CacheFlow Content Manager Rapidly Distributes Content to the Network's Edge for Optimal Performance.

Business Editors/High Tech Writers

SUPERCOMM 2000 Booth No. 1949

ATLANTA--(BUSINESS WIRE)-- June 6, 2000

CacheFlow Inc. (NASDAQ:CFLO), a leading provider of Internet caching appliances and content management services, today announced the beta availability of CacheFlow Content Manager, a software solution that simplifies the management of content across a globally distributed network. Content Manager helps content and service providers manage large volumes of frequently changing content and deliver a high level of customer service through an optimized content delivery infrastructure.

CacheFlow Content Manager provides a point-and-click approach for specifying how content is distributed to and updated on CacheFlow Internet caching appliances. The Java-based application runs on any Java-compatible platform and works flexibly with a site's existing model for managing content. Sites can configure both logical and physical groupings of caches across multiple geographic regions to simplify policy administration. Schedules can be set to specify the timing of content updates. For example, portals with multiple Web properties can easily manage when and how content should be distributed to each site's caches. Further, CacheFlow Content Manager allows caches to be grouped by organization, enabling service providers to independently manage content for each hosted customer.

"We offer sites instant scalability through our content distribution services," said Zeb Bhatti, CEO of WebVision. "With CacheFlow Content Manager, we can better ensure that content is available at the right place and time, providing our clients' online customers with outstanding site performance."

CacheFlow's products and services dramatically improve the speed and efficiency of delivering content from the edge of the network. With CacheFlow, content is moved closer to users, resulting in faster response times and rapid scaling of site traffic loads. CacheFlow enables E-businesses to achieve stronger customer loyalty and higher online profitability since more transactions can be served through a lower cost infrastructure.

"CacheFlow Content Manager is a significant addition to our leading portfolio of content management and delivery solutions," said Patrick Harr, Vice President of Marketing for CacheFlow. "The tool is unique in that a site can set a content distribution policy once and have it implemented globally. With Content Manager, CacheFlow effectively extends a site's content publishing process to the edge of the network, where content users can instantly access the most up-to-date information."

Availability and Demonstration

CacheFlow Content Manager is currently in beta testing. CacheFlow will be demonstrating the solution in Booth No. 1949 at Supercomm in Atlanta, GA from June 6-8, 2000.

About CacheFlow Inc.

CacheFlow is a leading provider of Internet caching appliances and content management services that accelerate and manage the flow of information over the Internet. CacheFlow solutions -- containing the CacheOS(TM) operating system -- boost the performance of e-commerce Web sites, enhance the productivity of Internet users and reduce overall network costs for Internet service providers and enterprises. In addition, CacheFlow Internet caching appliances are designed to provide better network security and more up-to-date content than traditional caching solutions. Based in Sunnyvale, California, CacheFlow can be contacted via telephone at [phone], fax at [phone] or email at [e-mail]. Investors and financial analysts may contact CacheFlow Investor Relations at [phone]. For more information, visit www.cacheflow.com.

The statements contained in this press release that are not purely historical are forward-looking statements, including statements regarding CacheFlow's expectations, beliefs, intentions or strategies regarding the future. All forward-looking statements included in this press release are based upon information available to CacheFlow as of the date hereof, and CacheFlow assumes no obligation to update any such forward-looking statements. Forward-looking statements involve risks and uncertainties, which could cause actual results to differ materially from those projected. These and other risks relating to CacheFlow's business are set forth in CacheFlow's Form S-1, as amended and declared effective by the Securities and Exchange Commission on November 18, 1999, the Form 10-Q for the period ended January 31, 2000, and other reports filed from time to time with the Securities and Exchange Commission.

CacheFlow is a registered trademark of CacheFlow Inc. in the U.S. and worldwide. All other company and product names are used for identification purposes only and may be trademarks of their respective owners.