jdk-based logger tend to block
at java.util.logging.Logger.log(Logger.java:476) in concurrent
environments. This makes logging a main performance issue. To overcome
this problem, this is a add-on to jdk logging to put log entries on a
concurrent message queue and log the messages one by one using a
separate process.
- FTPClient uses the concurrent logging instead of the log4j logger
used a ASCII String <-> byte[] conversion wherever possible. Many Strings in YaCy are hashes which are pure ASCII (base64 hashes).
The new ASCII String <-> byte[] conversion method have less computation overhead than the UTF8 conversion.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7746 6c8d7289-2bf4-0310-a012-ef5d649a1542
- many speed/performance hacks
- added solr charding and new charding web interface
- added option to switch off the yacy index when using solr
- added new fail-url categories which are used to make a distinction which fail-urls to be sent to solr
- refactoring/renaming of some method names to distinguish host/url hashes better
- a large number of bug/npe fixes
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7738 6c8d7289-2bf4-0310-a012-ef5d649a1542
This servlet currently only serves for indexes to the web structure hosts. It can be tested by calling
http://localhost:8090/yacy/idx.json?object=host
This yacy protocol servlet is the first one that returns JSON code and that also shows index entries in a readable format. This will make the development of API applications much easier. This is also an example implementation for possible json versions of the other existing YaCy protocol interfaces.
The main purpose of this new feature is to provide a distributed block rank collection feature. Creating a block rank is very difficult if the forward-link data is first collected and then one peer must create a backward-link index. This interface provides already a partial backward index and therefore a collection of all these indexes needs only to be joined which is very easy. The result should be the computation of new block rank tables that all peers can perform.
To reduce load from peers this servlet buffers all data and refreshes it only once in 12 hours. This very slow update cycle is needed because the interface will be called round-robin from all peers once after start-up.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7724 6c8d7289-2bf4-0310-a012-ef5d649a1542
- faster generation of index abstract compression during remote search
- less synchronization in IO record reading
- request index abstract generation only if necessary and faster time-out in remote search
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7239 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added crawling queue sizes to /api/status_p.xml, syntax same as in queues_p.html
- fixed a bug in queue enumeration that caused a out of bounds exception
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6842 6c8d7289-2bf4-0310-a012-ef5d649a1542
for such cases the delete() operation was introduced which is sometimes much cheaper in operation since it does not need to create objects to hold the removed content and it does not need to read those objects.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6824 6c8d7289-2bf4-0310-a012-ef5d649a1542
- no direct deletion of referenced during search (shifted to time after search)
- bundling of all deletions for the references of a single word into one remove operation
- enhanced remove operation by caring that the collection is stored sorted (experimental)
- more String -> byte[] transition for search word lists
- clean up of unused code
- enhanced memory allocation of RowSet Objects (will use a little bit less memory which was wasted before)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6823 6c8d7289-2bf4-0310-a012-ef5d649a1542
The result should be a less usage of new String() and less memory usage (since a String-encapsulated byte[] has 40 bytes overhead)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6815 6c8d7289-2bf4-0310-a012-ef5d649a1542
