Berkeley DB Provides Amazon.com Fast, Reliable New Features

New feature to manage millions of queries and updates using Berkeley DB

LINCOLN, Massachusetts--May 21, 2001--Sleepycat Software, Inc., the
leading Open Source embedded database company, announced today that
premiere e-commerce company Amazon.com, Inc. (Nasdaq: AMZN) has deployed
Berkeley DB as its backing database for a new feature of the Amazon.com
web site, Sponsored Results.  Berkeley DB provides Amazon.com with a
fully transactional database capable of managing millions of queries
every day while constantly being updated.

Amazon.com uses Berkeley DB to administer their Sponsored Results
feature automatically.  This new Amazon.com facility allows authors,
publishers, musicians, and others to sponsor keyword searches on
Amazon.com, merchandising their products directly to the more than 30
million Amazon.com customers, while providing a more dynamic site
experience.  Sponsored Results, by Berkeley DB, will be updated
continuously as it receives millions of simultaneous queries.

"With the recent introduction of Berkeley DB 3.2, we were able to launch
a new feature on our web site in only a few months, while saving
considerable engineering resources," said Ruben Ortega, principle
software engineer at Amazon.com.  "Sleepycat's technical support has
been outstanding.  They provided quick, thorough responses throughout
our design process."

"We're excited that Amazon.com has chosen Berkeley DB as its database,"
said Michael Olson, Vice President of Sales and Marketing at Sleepycat
Software, Inc.  "Online commerce demands absolute reliability and very
high performance.  The features and flexibility of Berkeley DB allowed
Amazon.com to roll out the new service easily and cost-effectively
across their site.  This is vital to companies like Amazon.com that need
to react to customer demand quickly."

Berkeley DB's small code footprint, multi-language availability, and
multi-platform code library allow next-generation technologies to be
fast and resilient.  The product's ability to scale from small wireless
applications to enterprise-wide applications with thousands of
concurrent users provides developers with the tools they need to produce
cutting-edge software.  Because Berkeley DB is Open Source, developers
are able to evaluate it easily and efficiently, and fine-tune
performance directly to their specific needs.  Berkeley DB is available
for download from http://www.sleepycat.com.

About Berkeley DB and Sleepycat Software, Inc:
Sleepycat Software, Inc. (http://www.sleepycat.com) was founded in 1996
to develop, support, and distribute Berkeley DB commercially.  The
company is privately held, and has offices in Massachusetts and
California.  Sleepycat Software’s Berkeley DB, awarded Favorite Database
at LinuxWorld Expo, August 2000, is the Open Source embedded database
engine behind most ISPs, wired and wireless networks, and e-commerce
sites around the world.  Developed in 1991 and available commercially
since 1996, Berkeley DB is Open Source and runs on UNIX, Linux, VxWorks,
QNX, and Windows 95/98/NT/2000.

Contact:  Michael A. Olson
          Sleepycat Software, Inc.
          1509 McGee Avenue
          Berkeley, CA  94703
          Voice: (510) 526-3972
          Fax: (510) 526-2537
          Email: mao@sleepycat.com
          http://www.sleepycat.com/