yacy_search_server

Commit Graph

Author	SHA1	Message	Date
theli	a2fa75e688	) Asynchronous queuing of crawl job URLs (stackCrawl) 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	20 years ago
theli	1dc94e7753	) Adding support for gzip content-encoding of http post requests used to transferRWIs and transferURLs. See: http://www.yacy-forum.de/viewtopic.php?t=1167#10020 ) adding yacyVersion.java containing constants defining yacy versions that support a given feature. Needed to determine if a remote peer is able to decode gzip content-encoded http post bodies properly. git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@772 6c8d7289-2bf4-0310-a012-ef5d649a1542	20 years ago
theli	b990dc1ad1	) Replacing jsch 0.1.19 lib with newer version 0.1.21 ) Replacing PDFBox 0.7.1 lib with newer version 0.7.2 ) Refactoring of classes httpd/httpc/httpHeaders to make many methods for httpHeader/Requestline parsing reusable for new icap implementation ) adding chunked input stream support - needed by new icap implementation - needed by future httpc HTTP/1.1 support ) httpd.java - moving all connection property contants to class httpHeader - moving readHeader function to class httpHeader - moving parseQuery function to class httpHeader - moving handleTransparentProxy function to class httpHeader ) httpHeader.java - adding new fuction to parse the http response line - adding new function to converte http headers to a string that can be send to the client - adding a function that generates a proper url using all parsed connection properties ) ICAP Support - yacy now supports handling of icap response modification requests - this feature can be used by other icap enabled proxies to contact yacy as icap server, and to handover the downloaded content to yacy.logging for indexing - functionality was successfully tested with squid 2.5Stable 10 + icap patch - further icap services e.g. URL filtering based on yacy's blacklists are possible ) plasmaSwitchboard.java - htcache entries that are still needed for indexing are now properly registered as in use after system restart - extended logging: log message now shows parsing and indexing time for each sb. entry git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@757 6c8d7289-2bf4-0310-a012-ef5d649a1542	20 years ago

Author

SHA1

Message

Date

theli

a2fa75e688

*) Asynchronous queuing of crawl job URLs (stackCrawl)

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

theli

1dc94e7753

*) Adding support for gzip content-encoding of http post requests

used to transferRWIs and transferURLs.
   See: http://www.yacy-forum.de/viewtopic.php?t=1167#10020

*) adding yacyVersion.java containing constants defining yacy versions
   that support a given feature.
   Needed to determine if a remote peer is able to decode gzip 
   content-encoded http post bodies properly.

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@772 6c8d7289-2bf4-0310-a012-ef5d649a1542

theli

b990dc1ad1

*) Replacing jsch 0.1.19 lib with newer version 0.1.21

*) Replacing PDFBox 0.7.1 lib with newer version 0.7.2
*) Refactoring of classes httpd/httpc/httpHeaders to
   make many methods for httpHeader/Requestline parsing
   reusable for new icap implementation
*) adding chunked input stream support
   - needed by new icap implementation
   - needed by future httpc HTTP/1.1 support 
*) httpd.java
   - moving all connection property contants to class httpHeader
   - moving readHeader function to class httpHeader
   - moving parseQuery function to class httpHeader
   - moving handleTransparentProxy function to class httpHeader
*) httpHeader.java
   - adding new fuction to parse the http response line
   - adding new function to converte http headers to a string that
     can be send to the client
   - adding a function that generates a proper url using all parsed
     connection properties
*) ICAP Support
   - yacy now supports handling of icap response modification requests
   - this feature can be used by other icap enabled proxies to contact 
     yacy as icap server, and to handover the downloaded content to yacy.logging
     for indexing
   - functionality was successfully tested with squid 2.5Stable 10 + icap patch
   - further icap services e.g. URL filtering based on yacy's blacklists are possible
*) plasmaSwitchboard.java
   - htcache entries that are still needed for indexing are now properly registered 
     as in use after system restart
   - extended logging: log message now shows parsing and indexing time for each sb. entry
    

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@757 6c8d7289-2bf4-0310-a012-ef5d649a1542

3 Commits (539f9e57aaac2ab16e6e7d9e0200980e07dca307)