This application utilizes a BaseX client/server architecture to perform queries against a set of XML databases. These databases are created and initialized during war file deployment and allow upwards of 1000s of threads to perform queries asynchronously. I chose BaseX for its ability to work well with a XML hierarchy without having to rely on another external database server where network performance can be problematic. I made the switch to 8 but noticed issues with performance. I understand that most people are using BaseX in a typical single threaded web application where these performance issues would not be as noticeable. I can easily try out 9 and see if these performance issues are still relevant. I was only wondering whether someone had ever created a set of standard metrics, based on a simple set of X-Query operations, to offer a general understanding of performance across the various versions of your product.
Carl R Bondeson IT Analyst 3 Department of Public Health Operation & Support Services Information Technology Phone: 860-509-7434 Carl.Bondeson@ct.govmailto:Carl.Bondeson@ct.gov
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From: Christian Grün [mailto:christian.gruen@gmail.com] Sent: Thursday, February 01, 2018 8:12 AM To: Bondeson, Carl Carl.Bondeson@ct.gov Cc: BaseX Support basex-talk@mailman.uni-konstanz.de Subject: RE: [basex-talk] BaseX 9.0 (still to come): Improved text compression
Hi Carl,
Our main focus has always been on performance. In general, new versions of BaseX will always be faster than older ones.
Could you give us more details on the experiences you made with version 7 and 8? Was it a particular feature of BaseX that had negative influence on the performance of your application?
Best, Christian
Am 01.02.2018 1:48 nachm. schrieb "Bondeson, Carl" <Carl.Bondeson@ct.govmailto:Carl.Bondeson@ct.gov>: We have been using BaseX 7.6 in a multithreaded Java/JBoss application for over 4 years. We were unable to move to version 8 due to performance issues. Have any performance metrics been done between the various version to get a handle on whether a move to 9 is warranted?
BTW .. great product!
Carl R Bondeson IT Analyst 3 Department of Public Health Operation & Support Services Information Technology Phone: 860-509-7434 Carl.Bondeson@ct.govmailto:Carl.Bondeson@ct.gov
-----Original Message----- From: basex-talk-bounces@mailman.uni-konstanz.demailto:basex-talk-bounces@mailman.uni-konstanz.de [mailto:basex-talk-bounces@mailman.uni-konstanz.demailto:basex-talk-bounces@mailman.uni-konstanz.de] On Behalf Of Christian Grün Sent: Thursday, February 01, 2018 3:29 AM To: BaseX <basex-talk@mailman.uni-konstanz.demailto:basex-talk@mailman.uni-konstanz.de>; BaseX <basex-announce@mailman.uni-konstanz.demailto:basex-announce@mailman.uni-konstanz.de> Subject: [basex-talk] BaseX 9.0 (still to come): Improved text compression
Hi all,
with version 9.0 of BaseX, texts will be better compressed than before. Short strings and whitespace text nodes will be inlined in our main storage, instead of being stored in an extra heap file as before. This will particularly be helpful when perfoming mass updates on short strings (replace 'yes' to 'no', etc.), and your future BaseX database will get even smaller [1].
Obviously, BaseX 9.0 databases cannot opened anymore with older versions. However, BaseX will be 100% backward compatible, so there will be no need to export and recreate your existing database instances. Instead, all future updates you perform will use the new compression feature; and if you run a complete optimize, all existing texts will be reduced as well.
All the best, Christian
