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TRICKLE.INF
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trickle.inf in garbo.uwasa.fi:/pc/pd2/moder*.zip
================================================
Mon 30-Aug-93 11:24
The TRICKLE server is a 'concentrator' of FTP sites into central
servers. Each server has its own (large) cache disk to store files
that have been recently ordered by users, and is in communication
with all other TRICKLE servers about the contents of its cache.
When a user orders a file that is not in local cache, TRICKLE can
usually forward this command to one other TRICKLE server that is
known to hold the file. In some cases, "broadcasts" to all other
TRICKLEs for this file is necessary, and if the file is new, or
accessed very infrequently, it is requested from one of the 3 FTP
slave-servers it has. These 3 are special servers who fetch the
file via FTP and send it via NJE to TRICKLE.
TRICKLE servers reduce load on FTP sites substantially: Their
incoming-to outgoing file rate is usually 1/5. Meaning, each cached
file is usually sent out five times during its lifetime in the cache
disk.
TRICKLE supports a wide range of delivery methods to the user.
Besides the usual email+(UUE,XXE,BTOA,etc), it can also FTP the
files to the user, or use NJE SENDFILE where possible and desired.
It is possible to subscribe to file patterns, such as
<MSDOS.VIRUS>SCAN and to have server deliver you a new copy of the
file each time it is made available. A special keyword, '*' can be
used instead of the pattern to subscribe to an entire
subdirectories, like: <OS2.NEW>*
It mirrors many FTP site's popular directories:
(exact site names are described in the help file): MSDOS, MISC,
SIGM, MACINTOS, LINUX, UNIX-C, GARFIELD, OS2, KERMIT, X11, IBM,
VM-CMS, WUARCHIVE, EXPO-MIT, UUNET, TEX, AMIGA, ARCHIVES.
The servers are accessible from any connected network, via email or
NJE interactive messages. Send a:
/HELP
command in a mail message (with the leading slash) to:
trickle@frmop11.cnusc.fr (or TRICKLE@FRMOP11.BITNET), or
trickle@hearn.nic.surfnet.nl (TRICKLE@HEARN.BITNET) for a help file,
and to assist you locate your closest TRICKLE server (there are
currently 12 TRICKLE servers).
Note! This server code is entirely different than the TRICKLE server
written by John Fisher (which I called "FTP slave-servers" in this
document). However, John Fisher's server is greatly used by TRICKLE
servers to fetch the files.
Regards,
turgut kalfaoglu
EARN staff on server programming
--------------------------------------------------------
As of August 31, my new address will be turgut@trearn.bitnet or
turgut%trearn@frmop11.cnusc.fr.