LSAM Proxy Cache (LPC) Software Release

The LSAM Proxy Cache (LPC)

The LSAM project's primary deliverable is a modified version of the Apache proxy cache, enabled with LSAM's technology to support virtual distributed multicast caching.

The LSAM proxy uses multicast push of related web pages, based on automatically-selected interest groups, to load caches at natural network aggregation points. The proxy is designed to reduce server and network load, and increase client performance.
The code is distributed as FreeBSD 2.2.6 compatible versions of:

modified Apache proxy cache 1.3b1
AFDP 0.98, a multicast file transfer protocol

Web-based control interface

The LPC now has a web-based control interface, supporting manual control of configuration and all automatic functions. This link is to a demonstation version of that interface on a running proxy.
(no userID or password is required for demo mode - just hit "OK")

Features of the LSAM Proxy Architecture

Automatically converges at network aggregation points
Uses multicast to reduce network and server load
Uses self-configuring interest groups to direct the multicast

LPC-lite v1.0

LPC-lite is a stripped-down version of the LPC system.

LPC-lite uses file and client lists to do explicit multicast push.
The code is distributed as FreeBSD 2.2.6 compatible versions of:

Current version of the Apache proxy cache
AFDP 0.98, a multicast file transfer protocol
Perl 5 scripts and C code

LPC-lite Features

LPC-lite has some augmented features, compared to LPC v1.1. The LPC-lite server push mechanism supports preloading of remote pages, i.e., via full URLs, rather than local file paths. Files, when pushed,

Preloading of remote files via full URLs.
Push of in-lines images (<img> tag)

Proxy Cache Released Code

Release 1.1 - 2/28/99: lsam-proxy-1.1.tar.gz

Release 1.0 - 8/27/98: lsam-proxy-1.0.tar.gz

Release 0.8 - 7/6/98: lsam-proxy-0.8.tar.gz

Release 0.71 - 4/6/98