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Sajith Eshan
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Execution Plans in Distributed Mode of WSO2 CEP 4.0.0
In both distributed and standalone modes of WSO2 CEP, the processing logic has to be written in SiddhiQL . In standalone mode of CEP the quarries will be executed inside a Siddhi engine that's inside the CEP server itself. In contrast, in distributed mode t...

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WSO2 CEP 4.0.0 in Distributed Mode
Overview WSO2 CEP is an powerful open source lightweight, low latency  complex event processing engine. Apache storm is a real time distributed processing system. The integration of WSO2 CEP with Apache storm combines the advanced complex event processing c...

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WSO2 CEP 4.0.0 in Distributed Mode
Overview WSO2 CEP is an powerful open source lightweight, low latency  complex event processing engine. Apache storm is a real time distributed processing system. The integration of WSO2 CEP with Apache storm combines the advanced complex event processing c...

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A ONE possible reason for "Error while accessing backend services for API key validation" in WSO2 API manager
Proble m When try to validate a token in WSO2 API manager if it returns the error,   <ams:fault xmlns:ams= "http://wso2.org/apimanager/security" > <ams:code> 900900 </ams:code> <ams:message> Unclassified Authentication Failure </ams:message> <ams:descriptio...

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Empty string retunred when fetching properties stored in WSO2 ESB?
Once I encountered
this scenario where I have set of properties stored in registry and I
wanted to fetch them in my ESB mediation sequence. I had set op
properties stored in /_system/config/myConfig. So I used get-property
function as follows in my mediatio...

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Reason for WSO2 ESB returns 202 response when an API is called!
Scenario There's a REST API hosted WSO2 ESB. And when you invoke it, ESB only returns a 202 Accept response similar to follows and no processing is done to the request. And there are no errors printed in the wso2carbon.log too. HTTP/1.1 202 Accepted Date: W...

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Sample on using Apache Cassandra with WSO2 CEP
In this post I hope to explain how you can configure WSO2 CEP to store events in Apache Cassandra.This don't intent to describe how you can configure  WSO2 CEP to receive events . Hence, I'm using configurations of sample 0001 and extend it to publish event...

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Performing a simple load test on WSO2 ESB proxy using Apache Jmeter
In this post I'm  explaining how you could perform a simple load
test on a WSO2 ESB proxy or any Web service using Apache Jmeter which is
a free and very easy to use tool. Also, please note that this post
describes only how to setup a very basic test ca...

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Determining size of a SOAP message inside a proxy service of WSO2 ESB
Below are two methods that can be used to determine the SOAP message size inside a WSO2 ESB proxy service. Method 1 - Using script mediator you can use the scrip mediator to find the size of the complete message. Following is example how you can do it, <scr...
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