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Akka Actors on Mac beating the S#!t Out of my Dell
Let me explain the scenario. We have n (tens, hundreds or thousands) of Akka actors listening to a queue on RabbitMQ server. So the scenario looks something like this AMQP.newConsumer(connection,...
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QuickTip: Ignoring some jars from getting assembled in SBT 0.10x
We are using sbt-onejar and as expected but not intended all the jars along with thier transitive dependencies were getting included in the jar. This was giving us several warnings like JarClassLoader:...
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Building a Plugin Based Architecture in Scala
A plugin based architecture has many advantages. Some of the common ones include Extending an application’s functionality without compiling it again Adding functionality without requiring access to the...
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AMQP and AKKA
AMQP is a message protocol that deals with publishers and consumers. It would look a lot like JMS but it is not. The main entities are Exchanges, Queues and Bindings. Look at the following diagram So a...
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Power of Parallel Processing in Akka
If you have been following the Inphina blog and our work with Scala related technologies, you would have noticed a spurt in our blog feeds. The reason being that we have recently come out of a very...
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QuickTip: VerifyError with jdk 7
If you are struggling with the following kind of error java.lang.VerifyError: Expecting a stackmap frame at branch target 6 bla bla bla …. then a simple solution is to add the following default JVM...
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QuickTip: Limiting the number of rows returned by MySQL. Pagination
If you would like to get a row num, you would have to do something like this SELECT @rn:=@rn+1 AS rank, itemID, ordercount FROM ( SELECT itemID, COUNT(*) AS ordercount FROM orders GROUP BY itemID ORDER...
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QuckTip: Tagging your code on git
For Tagging >git tag -a v1.4 -m ‘version 1.4′ For viewing the tag >git tag For pushing it for everyone >git push --tags For tagging an existing commit > git tag -a v1.2 9fceb02 <start...
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Fixing “SSL handshake failed: SSL error: Key usage violation in certificate...
This one solved it for me http://dionysus.uraganov.net/software/fixing-%E2%80%9Cssl-handshake-failed-ssl-error-key-usage-violation-in-certificate-has-been-detected-%E2%80%9D-error-on-svn-checkout/...
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