O'Reilly European Open Source Convention - October 17-20, 2005 - Amsterdam, The Netherlands
 Convention Coverage

Session

Caching Without Compromising Freshness: A Managed Cache for Apache Web Serving
Ross Heritage, BBC News Interactive

Track: Linux
Date: Tuesday, 18 October 2005
Time: 13:30 - 14:15
Location: Grand Ballroom

bbc.co.uk is one of the largest and most popular web sites in Europe, comprising several million web pages, and viewed by a daily audience of around 3.5 million unique users. With both our audience and content size growing at significant rates, our serving architecture (essentially, large web servers each with the full content) was reaching the limits of its scalability, with disk i/o performance starting to degrade. Our challenge was to keep the full volume of data constantly available, whilst improving the web serving performance and scalability. Additionally, editorial constraints of always serving the very latest version of our content ruled out the use of a traditional 2-tier web-caching model, relying on imprecise "Expires" headers. Our solution was to implement a rich cache that, instead of relying on file stats and heuristics, provides a rich control layer, exposed as a REST API, for the retrieval, deletion, and publishing of content. This solution builds upon Apache 2's ability to chain filters, and works in conjunction with mod_proxy and mod_rewrite. In the session, Ross Heritage will cover the design and implementation of this module, and describe its use in the day-to-day serving of the bbc.co.uk site. Additionally, he will discuss its application in other areas, specifically as a component in his RSS site search.


Download presentation file


Diamond Sponsors

Computer Associates International Inc., (CA)
IBM

Gold Sponsors

Microsoft

Silver Sponsors

ActiveState
Alfresco
Intel Corporation
LINAGORA
MySQL
Oracle
Red Hat
Sleepycat Software
SpikeSource
Zimbra

Media Sponsors

boing boing
C/C++ Users Journal
Hakin9
OpenSourceMag
Ping Wales
Ping Wales
Security Horizon
Software Developers Journal
Software Network
WebDevMagazine
Wydawnictwo Software

Sponsors

EuroOSCON Sponsor Opportunities — Email us at

Download the EuroOSCON Sponsor/Exhibitor Prospectus

EuroOSCON Media Sponsor Opportunities — Call Margi Levin at 707-827-7184 or email at

Press and Media

For media-related inquiries, contact Suzanne Axtell at

Conference News

Want to receive conference news? Sign up for our email newsletter.
O'Reilly Home | Privacy Policy

© 2005, O'Reilly Media, Inc.