Deprecated: (!First Steps) with Oracle Cloud’s Pub/Sub Service: Oracle Messaging Cloud Service

Lucas Jellema

Fire and forget messaging is a powerful concept. Asynchronous, decoupled communication is key to scalability and independence of services. Oracle Cloud provides a pub/sub solution called Oracle Messaging Cloud Service. This is an HTTP based publish and subscribe mechanism for asynchronous communication – based on persistent messages and durable subscriptions. […]

Donderdag 16 april/Thursday April 16th – Speedy Joe’s – Using asynchronous interaction in Java EE to turn the world’s slowest restaurant into a super performant place

Lucas Jellema

De Java SIG (Special Interest Group) van AMIS organiseert op donderdag 16 april een bijeenkomst (publiek toegankelijk) over asynchrone interacties in Java EE (web) applicaties. Synchrone interacties in de echte wereld en in IT applicaties kunnen de boel behoorlijk ophouden. Synchroon betekent wachten – en resources vasthouden. Dat kan een […]

Use Oracle Stream Explorer and the Service Execution Reporter policy to analyze service behavior – find too-late-closing flights on Saibot Airport

Lucas Jellema

This article shows how using the Service Execution Reporting policy – first introduced in this article: https://technology.amis.nl/2015/04/01/oracle-soa-suite-12c-create-deploy-attach-and-configure-a-custom-owsm-policy-to-report-on-service-execution/ – and the bridge created from the reporter through JMS to Stream Explorer – demonstrated in this article: https://technology.amis.nl/2015/04/06/live-monitoring-of-soa-suite-service-execution-with-stream-explorer-leveraging-custom-owsm-policy-and-jms/ – we can create a business monitor. The reports on service executions can be […]

JavaOne 2014: Roadmaps for the near future of Java

Lucas Jellema

JavaOne 2014 is first of all a community gathering – with over 500 sessions that discuss Java related topics in tantalizing details. A meeting of minds, of kindred spirits etc. It is also the place where the roadmap for the near future of the various constituents of the Java platform […]

OTN article: Speedy Perception trumps Speed Reception – on Smart Asynchronous Interactions in multi layered architectures

Lucas Jellema

The Oracle Technology Network has just published my article on asynchronous interactions used in multi-layered architectures to free up resources and create at least the perception of speedy processing. This article describes how, by leveraging opportunities for asynchronous processing, at least the perceived responsiveness of our systems is likely to […]

First steps with jWebSocket – open source Java framework for WebSockets – installation and running samples

Lucas Jellema 6

This month, In have been delving into Push architectures for the Web, looking into WebSockets among several other things. WebSockets, a fairly new standard (!) evolved along with HTML 5, specifies a communication protocol that provides an alternative to classic HTTP communication. WebSocket based interaction has lower overhead and – […]

JavaOne 2010 presentation: Why and how to engage a Complex Event Processor from a Java Web Application

Lucas Jellema

Complex Event Processors are capable of handling large volumes of events – by filtering, aggregating or detecting patterns. Java Applications use a CEP to pre-process incoming signals. These applications can also generate the events – for example the user click and navigation behavior in the web application – and report […]

An evening with Oracle Coherence and Oracle Data Integrator – on Compute Grids, JMS implementations and trickle feed

Lucas Jellema

The other night I had an interesting dinner date: seated around me were an Oracle ACE Director (Mark) and two Oracle employees, experts on Oracle Coherence (Ewan) and Oracle Data Integrator (Craig) respectively. The dinner was the closing event for all presenters and ACE Directors attending the EMEA SOA Partner […]