http://www.predic8.com/ About SOA and Web Services by predic8 en Copyright (C) 2008 predic8 GmbH Fri, 10 Sep 2010 16:12:39 +0200 http://blogs.law.harvard.edu/tech/rss/ info@predic8.com info@predic8.com 600 http://www.predic8.com//protobuf-etch-thrift-comparison.htm This article compares some popular frameworks which are used for object serialization. Cause of versioning, small footprint and high performance these frameworks can be interesting for remote communication, too. Besides Google's Protocol Buffers and Facebook's Thrift we also compare some open source frameworks like Etch, Hadoop Avro and Hession. Thu, 15 Apr 2010 00:00:00 +0200 http://www.predic8.com/news/serialization-frameworks-comparison.htm http://www.membrane-soa.org/soap-loadbalancing.htm Distributing the load among a cluster of servers can accelerate a slow running Web Service. Especially a Web Service that consumes a lot of CPU power and that serves a large number of concurrent clients. The open source SOAP intermediary Membrane SOA Monitor now comes with a loadbalancer for Web Services. The URL rewriting functionality of the monitor, that modifies endpoint addresses and schemaLocations in WSDL documents works together with the loadbalancer. The architecture of the balancer is based on some Spring beans and is therefore very flexible. For example, the dispatching strategy that selects an endpoint in the cluster can be exchanged by other implementations.
Wed, 17 Feb 2010 00:00:00 +0100 http://www.predic8.com/news/web-services-loadbalancing.htm http://www.predic8.com//wsdl-reading.htm


The Web Service Description Language is used to describe Web Services ubiquitously. Tools reading WSDL documents make it easy to implement or invoke a service. Usually it is not neccessary for programmers to read WSDL in order to create or consume a service. On the other hand WSDL is an essential technology for SOA experts. They write guidelines and rules for WSDL and they have to do quality assureance for WSDL documents and generators. This online article explains how to read a WSDL document using the description of a free Web Service for banking codes. The WSDL is analyzed step by step and transformed into a diagram showing the structure of WSDL. Wed, 26 Aug 2009 00:00:00 +0200 http://www.predic8.com/news/reading-wsdl-explained.htm http://www.predic8.com//bpel-xpath-splitter.htm In this new series of online articleswe are describing the realization of Enterprise Integration Patterns using the Business Process Execution Language. The first article explains how to implement a XPath Splitter using Glassfish ESB, Netbeans and BPEL. Tue, 24 Mar 2009 00:00:00 +0100 http://www.predic8.com/news/eip-patterns-using-bpel-splitter.htm http://www.predic8.com//openesb-servicemix-comparison.htm This new version of of our online article compares Glassfish ESB v2 GA and Apache ServiceMix 3.3.
Both ESB products are supporting the JBI standard but besides that they are very different. Tue, 24 Mar 2009 00:00:00 +0100 http://www.predic8.com/news/glass-esb-vs-servicemix.htm http://www.predic8.com//rest-webservices.htm Read the translation of an introductory article about the REST architecture. The article uses a lot of examples and diagrams to illustrate the ideas behind RESTful Web Services. Wed, 18 Feb 2009 00:00:00 +0100 http://www.predic8.com/news/rest-introduction.htm http://www.membrane-soa.org/soap-monitor/ To develop Web Services you have to look at the SOAP messages sometimes. A simple but convenient tool for monitoring SOAP messages is Membrane SOAP monitor. A release of the free tool is available for download now.

Mon, 2 Feb 2009 00:00:00 +0100 http://www.predic8.com/news/soap-monitor.htm http://www.predic8.com//groovy-web-services-jax-ws.htm Due to the strong integration in Java, Java libraries and servers can easily integrated in Groovy scripts. This article describes how web services can be implemented with Groovy and JAX-WS. Mon, 22 Dec 2008 00:00:00 +0100 http://www.predic8.com/news/groovy-web-services-jax-ws.htm