two main changes must be implemented to enable mass remote crawls:
- shift control of robots.txt to crawl queue (away from stacker). This is necessary since remote
crawls can contain unchecked urls. Each peer must check the robots to prevent that it is misused
as crawl agent for unwanted file retrieval
- implement new index files that control double-check of remotely crawled urls
After removal of robots.txt checking from stacker threads, the multi-threading of this process is void.
Multithreading has been removed. Also the thread pools for the crawl threads had been removed, since
creation of these threads is not resource-consuming, for a detailed explanation see svn 4106
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4181 6c8d7289-2bf4-0310-a012-ef5d649a1542
- put(key, value) methods are now used if a value added to the map should be kept as it is. Numbers are transformed (but not formatted) to an equivalent String representation.
- putASIS(...) have been removed, now done with simple put(...) (see above).
- puNum(...) can be used for number values which should be stored in a formatted way, either depending on the current locale setting for yacy (default) or in a "none" locale (see javadocs and setLocalize()).
- putHTML(...) escapes special characters into corresponding HTML enities ('<' => '<') which was done with put(...) before and so was called too often, becauses it is necessary only for very few cases. Additionally there is a "forXML" mode which only replaces < > & ".
In short: Use put(...) for almost everything, use putXY(...) if you need some special transformation of the value.
A few bugs have been fixed as well, and there should be a small performance improvement for complex pages with a lot of values.
* added additional Sum/Avg rows to access tracker pages, see http://forum.yacy-websuche.de/viewtopic.php?f=5&t=456
* removed duplicate code (mostly related to the big changes above).
TODO:
- make sure, number formats work as expected _everywhere_, report overseen stuff http://forum.yacy-websuche.de/viewtopic.php?f=5&t=437
- probably a good idea to add special putDate() methods as they are used in many pages and create duplicated formatting code + maybe some centralized handling for memory value formatting.
- further improve the speed of page creation for the WatchCrawler.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4178 6c8d7289-2bf4-0310-a012-ef5d649a1542
there are now two time-outs, one for the complete connection time, and one for an idle time
connections that are idle for more than 2 minutes are closed, and connections that are alive since more than one hour are also closed
if the complete number of connections exceeds 64, all connections more than 64 and have most idle time are also closed
During normal operation of peers these forced closings should never appear,
but the existence of the idle connection check ensures the availability of the peer and the usability of the host.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4134 6c8d7289-2bf4-0310-a012-ef5d649a1542
and replaced old fist hash computation by new method that tries to find a gap in the current dht
to do this, it is necessary that the network bootstraping is done before the own hash is computed
this made further redesigns in peer initialization order necessary
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4117 6c8d7289-2bf4-0310-a012-ef5d649a1542
the YaCy client treats disconnections during data transmissions as error and discards all data transmitted so far
this did not happen so far until I removed a delay time at the end of the daemon session which prevented this case.
To fix this problem, disconnections during transmissions are not treated as error now, which means that end-of-transmissions
with sudden disconnections are not a cause for peer diconnections any more. To be nice to non-updated peers, the sleep time
at the end of server sessions is also re-enabled.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4105 6c8d7289-2bf4-0310-a012-ef5d649a1542
search profiling showed, that a major amount of time is wasted by computing url hashes. The computation does an intranet-check, which needs a DNS lookup. This caused that each urlhash computation needed 100-200 milliseconds, which caused remote searches to delay at least 1 second more that necessary. The solution to this problem is to attach a URL hash to the URL data structure, because that means that the url hash value can be filled after retrieval of the URL from the database. The redesign of the url/urlhash management caused a major redesign of many parts of the software. Since some parts had been decided to be given up they had been removed during this change to avoid unnecessary maintenance of unused code.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4074 6c8d7289-2bf4-0310-a012-ef5d649a1542
it is necessary for the new search process that will do automatic re-searches
a positive effect is, that when a re-search is done it can be monitored how many
results had been contributed from other peers. The message for this contribution
was moved from the end of the result page to the top.
* enhanced re-search time when a global search was done an the local index has
already a great number of results for this word
* re-organised presearch computation; must be further enhanced
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4059 6c8d7289-2bf4-0310-a012-ef5d649a1542
- different handling of link quotation
- different handling of link normalization
- enhanced html/unicode en/de-coding
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3993 6c8d7289-2bf4-0310-a012-ef5d649a1542
- within this context: generalized date format handling
- extended Update interface:
* a version lookup can be triggered manually
* a complete lookup + download + re-boot process can be triggered with one click
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3986 6c8d7289-2bf4-0310-a012-ef5d649a1542
** kann das mal jemand auf seiner linux-platform testen **
** und feed-back geben ob der restart funktionier ? **
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3937 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added new download-option for releases on the status page
still mising:
- thomas-style restart for linux/mac
- untar/gunzip on shell basis
(comes next)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3931 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added chunked file transfer for non-yacy clients
- SSIs are streamed using chunked transfer, partly delivered pages can be seen in browser before transmission is finished
- added client-side network unit identification
- cleaned up code
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3926 6c8d7289-2bf4-0310-a012-ef5d649a1542
- hopefully fixed logging of GCs (in order to avoid things like "performed necessary GC, freed 18014398509481565 KB (requested/available/average: 4096 / 1631 / 2957 KB)") with the help of KoH
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3909 6c8d7289-2bf4-0310-a012-ef5d649a1542
we will provide two different releases in the future, one standard release and one 'pro'-release.
the 'pro'-release contains all additional parsers AND has different default performance values.
The pro-version differs therefore from the previous 'all'-version by this default values.
The pro-configuration is automatically choosen if the libx-folder exists. If a version is once initialized, its configuration stays independently from an existing libx folder.
The ant targets had been changed. There are now 3 different targets to create standard and pro-releases, and one target to upgrade:
- dist: creates a standard release (only, no libx target any more)
- distPro: creates a pro-release (includes the libx)
- distExt: creates a libx-release which includes the libx-folder only. It may be used to upgrade from standard to pro
Furthermore, the naming of 'dev'-releases had been removed.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3902 6c8d7289-2bf4-0310-a012-ef5d649a1542
- all requests to the own httdp can now be listed in the access tracker menu
- the search statistics had been renamed to access tracker and extended by this tracker
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3861 6c8d7289-2bf4-0310-a012-ef5d649a1542
- don't start up if DATA/yacy.running exists as this is usually a sign of an already started yacy-instance
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3831 6c8d7289-2bf4-0310-a012-ef5d649a1542
- fixed wrong XML output if no peers are known in Network.xml
- simplified parsing of table properties in wikiCode and ZTableToken
- reimplemented GC heuristics. They are needed to constantly ensure that an amount of free memory is available which is higher than Java's max. limit for performing a Full GC (please use serverMemory.request(long, boolean) rather than serverMemory.available(long, boolean) to provide data for averaging over the last GCs)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3793 6c8d7289-2bf4-0310-a012-ef5d649a1542
- all web page parsing operations will now increase a web structure file
- the file is computed in memory and dumped at shutdown-time to PLASMASB/webStructure.map in readable form (not a database)
- the file can be used externally to analyse the link structure of the crawled pages
- the web structure can also be retrieved using a xml-interface at http://localhost:8080/xml/webstructure.xml
- the short-term purpose is the computation of a link-graph image (before linuxtag!)
- a long-term purpose could be a decentralized computation of the citation rank
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3746 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added 7zip parser
- added 'text/sgml' to realtime parseable mimetypes (sometimes returned by the mime type parser)
- added new cached output stream class, very suitable for parsers because of limited memory
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3740 6c8d7289-2bf4-0310-a012-ef5d649a1542
- some bugs may have been fixed with wrong removal operations
- removed temporary storage of remove-positions and replaced by direct deletions
- changed synchronization
- added many assets
- modified dbtest to also test remove during threaded stresstest
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3576 6c8d7289-2bf4-0310-a012-ef5d649a1542
such an entry cannot be instantiated without allocation of new byte[]; instead
it can re-use memory from other kelondroRow.Entry objects.
during bugfixing also other bugs may have been solved, maybe the INCONSISTENCY problem
could have been solved. One cause can be missing synchronization during bulk storage
when a R/W-path optimization is done. To test this case, the optimization is currently
switched off.
More memory enhancements can be done after this initial change to the allocation scheme.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3536 6c8d7289-2bf4-0310-a012-ef5d649a1542
- better memory allocation for FlexTable indexes
- splitting between static index and dynamic index (only the dynamic part must grow)
- to enable a merge-iteration of new splittet index, a huge number of classes needed to be adopted for new iterator classes
- added new iterator classes that support cloneable iterators
- adopted all iterator classes to implement cloneable itarators
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3453 6c8d7289-2bf4-0310-a012-ef5d649a1542
redesign for better IO performance
enhanced database seek-time by avoiding write operations at distant
positions of a database file. until now, a USEDC counter was written
at the head-section of a kelondroRecords database file (which is the
basic data structure of all kelondro database files) to store the
actual number of records that are contained in the database. Now, this
value is computed from the database file size. This is either done
only once at start-time, or continuously when run in asserts enabled.
The counter is then updated only in RAM, and written at close of the
file. If the close fails, the correct number can be computed from the
file size, and if this is not equal to the stored number it is a strong
evidence that YaCY was not shut down properly.
To preserve consistency, the complete storage-routine had to be re-written.
Another change enhances read of nodes in some cases, where the data-tail
can be read together with the data-head. This saves another IO lookup during
each DB node fetch.
Includes also many small bugfixes.
IF ANYTHING GOES WRONG, ALL YOUR DATA IS LOST: PLEASE MAKE A BACK-UP
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3375 6c8d7289-2bf4-0310-a012-ef5d649a1542
- the speed was doubled by avoiding read access during the dump
- the speed was dramatically increased at least by factor 10
by using a temporary ram-file where the structures are flushed to
before it is dumped then as a whole byte-chunk to the file system.
The speed enhancements also affects some other parts of the database.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3353 6c8d7289-2bf4-0310-a012-ef5d649a1542
not finished yet
target: better selection of peer-ping targets, which should enhance stabilization of the net
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3319 6c8d7289-2bf4-0310-a012-ef5d649a1542
add the following to DATA/LOG/yacy.logging:
---
# Properties for the LogalizerHandler
de.anomic.server.logging.LogalizerHandler.enabled = true
de.anomic.server.logging.LogalizerHandler.debug = false
de.anomic.server.logging.LogalizerHandler.parserPackage = de.anomic.server.logging.logParsers
---
and "de.anomic.server.logging.LogalizerHandler" to the list of global handlers
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3219 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added logging of reducing word-cache (log-level fine)
- disabled memprereq field in PerformanceQueues_p.html, because it is now set by the collections db
- minor changes to ConfigSkins / -Language
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3165 6c8d7289-2bf4-0310-a012-ef5d649a1542
*) added missing private IP-ranges for APIPA/Zeroconf and 172.16.0.0–172.31.255.255
*) Changed some seed-download-errors to warnings
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3086 6c8d7289-2bf4-0310-a012-ef5d649a1542
- enhanced local domain detection
- bugfixing for memory assignment in kelondroFlexSplit
- automatic memory assignment to caches according to available RAM
- bugfixes for details during search process
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2924 6c8d7289-2bf4-0310-a012-ef5d649a1542
- generalized object caching and added new object caching class
- added object caching wherever kelondroTree was used
- added object caching also to usage of kelondroFlex
- added object buffering (a write cache) to NURLs
- added many assert statements; fixed bugs here and there
- added missing close methods to latest added classes
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2858 6c8d7289-2bf4-0310-a012-ef5d649a1542
- method loadResourceContent defined as deprecated.
Please do not use this function to avoid OutOfMemory Exceptions
when loading large files
- new function getResourceContentStream to get an inputstream of a cache file
- new function getResourceContentLength to get the size of a cached file
*) httpc.java:
- Bugfix: resource content was loaded into memory even if this was not requested
*) Crawler:
- new option to hold loaded resource content in memory
- adding option to use the worker class without the worker pool
(needed by the snippet fetcher)
*) plasmaSnippetCache
- snippet loader does not use a crawl-worker from pool but uses
a newly created instance to avoid blocking by normal crawling
activity.
- now operates on streams instead of byte arrays to avoid OutOfMemory
Exceptions when operating on large files
- snippet loader now forces the crawl-worker to keep the loaded
resource in memory to avoid IO
*) plasmaCondenser: adding new function getWords that can directly operate on input streams
*) Parsers
- keep resource in memory whenever possible (to avoid IO)
- when parsing from stream the content length must be passed to the parser function now.
this length value is needed by the parsers to decide if the parsed resource content is to large
to hold it in memory and must be stored to file
- AbstractParser.java: new function to pass the contentLength of a resource to the parsers
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2701 6c8d7289-2bf4-0310-a012-ef5d649a1542
*) better logging of parser failures
*) simplified usage of plasmaparser through switchboard
*) restructuring of crawler
- crawler now returns an error message if it is used in sync mode (e.g. by snippet fetcher)
*) snippet-fetcher: more verbose error messages
*) serverByteBuffer.java: adding new function append(String,encoding)
*) serverFileUtils.java: adding functions to copy only a given number of bytes between streams
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2641 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added switchh to show or hide surftipps
- more news contribute to surftipps
- added voting system for surftipps
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2638 6c8d7289-2bf4-0310-a012-ef5d649a1542
- serverFileUtils.java:
-- adding methods to copy from stream to writer and readers to writers
-- moving httpc writeX methods into serverFileUtils class
- serverCharBuffer.java: removing inheritance from Writer class
- replacing htmlFilterOutputStream by htmlFilterWriter class which handles
content as char stream
- htmlFilterContentTransformer.java: deactivating getText mode
(still needs to be migrated to use char streams instead of byte streams)
- changes in several classes to use htmlFilterWriter instead of htmlFilterOutputStream
- changes in Scraper and Transformer classes to operate on chars instead of bytes
- httpdProxyHandler.java: bugfix. clientTimeout setting was missing in config file
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2617 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added new image 'B' in front of search results for bookmark generation
- added news generation when a public bookmark is added
- the '+' in front of search results has new meaning: positive rating for that result
- added news generation when a '+' is hit
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2613 6c8d7289-2bf4-0310-a012-ef5d649a1542
*) htmlFilterContentScraper.java: using proper charset for document title
*) serverByteBuffer.java: adding new toString which allows to specify the charset for byte encoding
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2593 6c8d7289-2bf4-0310-a012-ef5d649a1542
the ymageMatrix initializer throws an RuntimeException if there is not
enough memory available to generate a new ymage of wanted size
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2541 6c8d7289-2bf4-0310-a012-ef5d649a1542
- catchup of OutOfMemoryError in server threads
- automatic adoption of word cache size after a Short Mem Cycle
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2426 6c8d7289-2bf4-0310-a012-ef5d649a1542
A new port forwarding method for upnp was added.
If this method is enabled, yacy automatically determines an UPnP
capable internet gateway and configures the gateway port forwarding
settings properly.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2328 6c8d7289-2bf4-0310-a012-ef5d649a1542
when extracting from eurl, the html output format is recommended, since
this format adds also the fail reason to the domain/url.
The complete syntax for domain extraction is now
java -Xmx<megabytes>m -classpath classes yacy -domlist [ -source { lurl | eurl } ] [ -format { text | zip | gzip | html } ] [ <path to DATA folder> ]
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2322 6c8d7289-2bf4-0310-a012-ef5d649a1542
* mainly for the transition to the new indexing database structure
* a bugfix for an endless loop inside kelondroTree iteration
* a bugfix for bulk read inside a kelondroTree iteration; the bug caused that some elements had been iterated twice
* very strong speed enhancement for url/domain extraction
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2320 6c8d7289-2bf4-0310-a012-ef5d649a1542
This shall be seen as an experiment to exclude all cases where
there could be a DNS lookup during URL comparisment.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2290 6c8d7289-2bf4-0310-a012-ef5d649a1542
The pause is started by calling intermission(Long.MAX_VALUE)
and can be stopped by calling intermission(0)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2272 6c8d7289-2bf4-0310-a012-ef5d649a1542
instead of creating a new one.
Notes:
This import is done automatically on startup if the following properties
are set in the config file:
pkcs12ImportFile =
pkcs12ImportPwd =
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2139 6c8d7289-2bf4-0310-a012-ef5d649a1542
-Renaming writeandzip to writeandgzip to avoid confusion about type of compression
-Adding new startup message to windows script
-The usual language "enhancements" ;-)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1953 6c8d7289-2bf4-0310-a012-ef5d649a1542
- implemented hand-over of new word index attributes during remote search
- implemented word-distance computation during search
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1382 6c8d7289-2bf4-0310-a012-ef5d649a1542
and filled with cookies and so on.
This header one can set into serverObjects
Check CookieTest.html and CookieTest.java for details.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1334 6c8d7289-2bf4-0310-a012-ef5d649a1542
Version 0.1
Start Yacy, go to localhost:8080/CookieTest.html
Play around with cookies
Look into CookieTest.java to See, how it works
This behavior will be changed
such that httpHeader will be responsible for the cookies in the future
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1332 6c8d7289-2bf4-0310-a012-ef5d649a1542
the kelondro database needs specific information about the order of
base64-encoded keys. Since no other package depends on base64
(only the httpd uses base64 for encryption, but does not need to encode these strings)
it is good to move base64 encoding to the new ordering classes in kelondro.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1284 6c8d7289-2bf4-0310-a012-ef5d649a1542
next steps: attach voting and restrict to administrator
to see the deletion button, move the mouse pointer to the left of a search result
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1172 6c8d7289-2bf4-0310-a012-ef5d649a1542
- with this script it's possible to pass URLs from squid
to yacy via the squid redirector interface
- this URLs are then used by YaCy to feed the crawler
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1141 6c8d7289-2bf4-0310-a012-ef5d649a1542
- restructuring of mimeTypes based on the parsers
- displaying parser usage count
- displaying human readably parser names
- displaying parser version information
*) httpdFileHandler.java
- adding possibility to support "streaming" servlets
which are special servlets that can communicate with
the client via the connection streams autonomous
- the name of these new servlet types must end with the
file extension .stream
- this feature will be needed by the yacy ScreenSaver
class to fetch statistic data from the peer without the
need to reconnect to the server all the time
*) Adding human readable names and version information for
all supported parsers
*) plasmaParser.java
- adding new structure to store parser statistic data
*) Adding openDocument parser
- can be used to parse odt files
*) jmimemagic
- adding rules to detect openDocument formats properly
*) serverLog.java
- adding functions that can be used to query if a given
logging level is enabled or not.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1140 6c8d7289-2bf4-0310-a012-ef5d649a1542
- Classloading didn't work properly if there are multiple classes with the same name
- This could occure because the yacy servlets have no package name defined and therefore
are all in the same (default) package.
*) Bugfix for Duplicated Class Error
See: http://www.yacy-forum.de/viewtopic.php?t=1341
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1135 6c8d7289-2bf4-0310-a012-ef5d649a1542
- Bugfix: old dns cache did not handle case insensitive hostnames correctly.
- adding a possibility to set domain name patterns defining hostnames that should not be cached by the httpc dns cache
e.g. borg-300.dyndns.org
This can be done by setting the new httpc.nameCacheNoCachingPatterns property
- using httpc.dnsResolve wherever possible within the sourcecode
[httpd.java,plasmaCrawlStacker.java]
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1044 6c8d7289-2bf4-0310-a012-ef5d649a1542
could cause problems with clients which do not shutdown persistent
connections properly.
- Setting timeout for idle persistent connections to 30 minutes
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@983 6c8d7289-2bf4-0310-a012-ef5d649a1542
- adding automatic refresh
- accepts new parameter nameLookup which can be used to deactivate
yacy-peer name lookup (because we have problems with this on large seed-dbs)
*) ViewFile
New page that can be used to view
- original content
- plain text content
- parsed content
- parsed sentences
of a webpage specified by there url hash
Mainly for debugging purpose at the moment
*) Robots.txt
Bugfix for if-modified-since usage
TODO: synchronization of downloads to avoid loading the same robots-file
multiple times in parallel by different threads
*) Shutdown
Better abortion of transferRWI and transferURL sessions on server shutdown
*) Status Page
Adding icon to start/stop crawling via status page
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@950 6c8d7289-2bf4-0310-a012-ef5d649a1542
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
hermens