[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Avoid using the XML DOM because it is (a) slow and (b) notthread-saf
As far as I know, these are facts, not opinions .. It is well known (well "well" by those who know) that the Java DOM implementations are not thread safe. The DOM implementations suffer from other issues as well but this is a huge gotcha. ---------------------------------------- David A. Lee dlee@calldei.com http://www.xmlsh.org -----Original Message----- From: Costello, Roger L. [mailto:costello@mitre.org] Sent: Thursday, September 06, 2012 7:41 AM To: xml-dev@lists.xml.org Subject: Avoid using the XML DOM because it is (a) slow and (b) not thread-safe Hi Folks, From Michael Kay [1]: Many people don't realize that the DOM is not thread-safe (even if you are only doing reads). If you are caching a DOM object, make sure you synchronize all access to it. Frankly, this makes DOM unsuited to this kind of application (using XSLT in a high-transaction web service). I know I'm biased, but I would suggest switching to Saxon, whose native tree implementation is not only far faster than DOM, but also thread-safe. One user recently tweeted about getting a 100x performance improvement when they made this switch. Michael also states [2]: The DOM spec says that it isn't thread-safe, and the Xerces implementation of the DOM takes this literally - innocent-looking read operations can cause havoc if there are other threads active. Do you agree? Disagree? /Roger [1] http://stackoverflow.com/questions/12291840/unknown-error-in-xpath/12297873#12297873 [2] http://saxon.markmail.org/search/?q=#query:+page:1+mid:kuocj3i27lgkepwn+state:results _______________________________________________________________________ XML-DEV is a publicly archived, unmoderated list hosted by OASIS to support XML implementation and development. To minimize spam in the archives, you must subscribe before posting. [Un]Subscribe/change address: http://www.oasis-open.org/mlmanage/ Or unsubscribe: xml-dev-unsubscribe@lists.xml.org subscribe: xml-dev-subscribe@lists.xml.org List archive: http://lists.xml.org/archives/xml-dev/ List Guidelines: http://www.oasis-open.org/maillists/guidelines.php
[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] |
PURCHASE STYLUS STUDIO ONLINE TODAY!Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced! Download The World's Best XML IDE!Accelerate XML development with our award-winning XML IDE - Download a free trial today! Subscribe in XML format
|