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Distributed Peer-to-Peer Web Search Engine and Intranet Search Appliance
http://yacy.net/
a2fa75e688
various checks like the blacklist check or the robots.txt disallow check are now
done by a separate thread to unburden the indexer thread(s)
TODO: maybe we have to introduce a threadpool here if it turn out that this single
thread is a bottleneck because of the time consuming robots.txt downloads
*) improved index transfer
The index selection and transmission is done in parallel now to improve index
transfer performance.
TODO: maybe we could speed up performance by unsing multiple transmission threads in
parallel instead of only a single one.
*) gzip encoded post requests
it is now configureable if a gzip encoded post request should be send on
intex transfer/distribution
*) storage Peer (very experimentell and not optimized yet)
Now it's possible to send the result of the yacy indexer thread to a remote peer
istead of storing the indexed words locally.
This could be done by setting the property "storagePeerHash" in the yacy config file
- Please note that if the index transfer fails, the index ist stored locally.
- TODO: currently this index transfer is done by the indexer thread.
To seedup the indexer
a) this transmission should be done in parallel and
b) multiple chunks should be bundled and transfered together
*) general performance improvements
- better memory cleanup after http request processing has finished
- replacing some string concatenations with stringBuffers
- replacing BufferedInputStreams with serverByteBuffer
- replacing vectors with arraylists wherever possible
- replacing hashtables with hashmaps wherever possible
This was done because function calls to verctor or hashtable functions
take 3 time longer than calls to functions of arraylists or hashmaps.
TODO: we should take a look on the class serverObject which is inherited from hashmap
Do we realy need a synchronization for this class?
TODO: replace arraylists with linkedLists if random access to the list elements is not needed
*) Robots Parser supports if-modified-since downloads now
If the downloaded robots.txt file is older than 7 days the robots parser tries to
download the robots.txt with the if-modified-since header to avoid unnecessary downloads
if the file was not changed. Additionally the ETag header is used to detect changes.
*) Crawler: better handling of unsupported mimeTypes + FileExtension
*) Bugfix: plasmaWordIndexEntity was not closed correctly in
- query.java
- plasmaswitchboard.java
*) function minimizeUrlDB added to yacy.java
this function tests the current urlHashDB for unused urls
ATTENTION: please don't use this function at the moment because
it causes the wordIndexDB to flush all words into the
word directory!
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@853 6c8d7289-2bf4-0310-a012-ef5d649a1542
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| addon | ||
| doc | ||
| htroot | ||
| lib | ||
| libx | ||
| locales | ||
| source | ||
| .classpath | ||
| .project | ||
| build.properties | ||
| build.xml | ||
| ChangeLog | ||
| changelog.txt | ||
| gpl.txt | ||
| httpd.mime | ||
| killYACY.sh | ||
| readme.txt | ||
| startYACY_noconsole_Win9x.bat | ||
| startYACY_noconsole.bat | ||
| startYACY_Win9x.bat | ||
| startYACY.bat | ||
| startYACY.command | ||
| startYACY.sh | ||
| stopYACY_Win9x.bat | ||
| stopYACY.bat | ||
| stopYACY.command | ||
| stopYACY.sh | ||
| superseed.txt | ||
| yacy.init | ||
| yacy.logging | ||
| yacy.nsi | ||
| yacy.stopwords | ||
| yacy.stopwords.de | ||
| yacy.yellow | ||
README for YaCy (C) by Michael Peter Christen; mc@anomic.de
---------------------------------------------------------------------------
Please visit www.yacy.net for latest changes or new documentation.
YaCy comes with ABSOLUTELY NO WARRANTY!
This is free software, and you are welcome to redistribute it
under certain conditions; see file gpl.txt for details.
---------------------------------------------------------------------------
This is a P2P-based Web Search Engine
and also a caching http/https proxy.
The complete documentation can be found inside the 'doc' subdirectory
in this release. Start browsing the manual by opening the index.html
file with your web browser.
YOU NEED JAVA 1.4.2 OR LATER TO RUN THIS APPLICATION!
PLEASE DOWNLOAD JAVA FROM http://java.sun.com
Startup and Shutdown of YaCy:
- on Linux:
to start: execute startYACY.sh
to stop : execute stopYACY.sh
- on Windows:
to start: double-click startYACY.bat
to stop : double-click stopYACY.bat
- on Mac OS X:
to start: double-click startYACY.command (alias possible!)
to stop : double-click stopYACY.command
- on any other OS:
to start: execute java as
java -classpath classes:htroot:lib/commons-collections.jar:lib/commons-pool-1.2.jar yacy -startup <yacy-release-path>
to stop : execute java as
java -classpath classes:htroot:lib/commons-collections.jar:lib/commons-pool-1.2.jar yacy -shutdown
YaCy is a server process that can be administrated and used
with your web browser:
browse to http://localhost:8080 where you can see your personal
search, configuration and administration interface.
If you want to use the built-in proxy, simply configure your internet connection
to use a proxy at port 8080. You can also change this default proxy port.
If you like to use YaCy not as proxy but only as distributed
crawling/search engine, you can do so.
Start crawling at the 'Index Creation' menu point.
If you have any questions, please do not hesitate to contact the author:
Send an email to Michael Christen (mc@anomic.de) with a meaningful subject
including the word 'yacy' to prevent that your email gets stuck
in my anti-spam filter.
If you like to have a customized version for special needs,
feel free to ask the author for a business proposal to customize YaCy
according to your needs. We also provide integration solutions if the
software is about to be integrated into your enterprise application.
Germany, Frankfurt a.M., 22.07.2005
Michael Peter Christen