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Red Hat JBoss Fuse/A-MQ - Fuse and A-MQ Version 6.3 GA is released!

Fuse and A-MQ 6.3 GA has just went out. Maybe, you would think this is just only a minor version release why should I care? Hold your thoughts on that! Because they have done a lot of improvements and also added many new features into this release.

Besides various bug fixes and making sure Fuse Fabric is much more stable. There are two major change in this version update:

  • New Tooling in JBoss Developer Studio (JBDS) 9.1 GA. 
  • Newer Apache Camel version – Camel v2.17.
I was really impressed by the work put in to make developing Camel application much simpler. First is the installation of tooling itself. Now it has a all-in-one installer so you don't need to worry about which plugins you need to check. See the videos below to see the new "Getting Started" of Fuse 6.3.



And If you notice from the above video, the presentation of camel route in JBDS has also updated. It fixed some of the miss representation of logic and making it easier to read.

Old Camel Route

New Camel Route

On the right hand side, there are more components added to the component palette.

In this new GA version, it has supported couple of new connectors,


  • ServiceNow 
    • ServiceNow offers everything-as-a-service cloud computing, Camel provides access to all of ServiceNow REST API. You can manage and automate your IT service with Fuse. 
  • Kafka
    • Apache Kafka is publish-subscribe distributed messaging broker, a very popular messaging alternative, with Fuse's new component can now listen and put data into Kafka. 
  • Spark
    • Apache Spark is an cluster computing framework, provides programmers with a centered application programming interface.And a read-only multiset of data items distributed over a cluster of machines, and maintained in a fault-tolerant way. To integrate with Spark, Fuse provide a bridge between Camel connectors and Spark tasks, and dynamically choose a task to execute. 
  • Paho
    • Eclipse Paho project provides open-source client implementations of MQTT messaging protocols, this connector integrate to this client using the Eclipse Paho library. 
  • Slack
    • Slack is a cloud-based team collaboration tool, it's has IRC-like features, persistent chat rooms (channels) organized by topic, private groups and direct messaging. The connector allows you to connect to an instance of Slack and delivers a message contained in the message body via a pre established Slack incoming webhook. 
  • Kubernetes
    • Kubernetes is implemented as container cluster manager, provides mechanisms for deploying, maintaining, and scaling applications on Docker. This connector allow you to interact with Kubernetes operation, and use it to manage and integrate with your containers. 
  • PDF Documents
    • This components provides the ability to create, modify or extract content from PDF documents. This component uses Apache PDFBox as underlying library to work with PDF documents.

Also with mentioning is the addition of swagger-java module, with the REST DSL in Camel, we will now be able to build a complete, flexible API-Based application with Camel being the API connector base technology. Using swagger-java module to automatic generate the documentation.

Take a look and play with the new Fuse 6.3!


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這個題目很多人叫我寫,可是這題目好大,這分明就是整死我咩~
所以我會分幾段慢慢寫。

JBoss 的 SubsystemDatasource WebWeb Service EJB Hibernate JMSJCAJVM 調校OS (作業系統)

先來看一下 DataSource Subsystem, DataSource 的部分主要是針對Connection Pool 做調校。

通常,程式都會需要跟資料庫界接,電腦在本機,尤其是在記憶體的運算很快,但是一旦要外部的資源連接,就是會非常的耗資源。所以現在的應用程式伺服器都會有個Pool 放一些先連接好的 資料庫connection,當程式有需要的時候就可以馬上提供,而不用花那些多餘的資源去連接資料庫。

這就是為什麼要針對Connection Pool 去做調校。

以下會討論到的參數,都是跟效能比較有關係,Datasource 還有很多參數,像是檢核connection 是否正確的,我都不會提到。如果你追求的是非常快速的效能,那我建議你一個檢核都不要加。當然,這樣就會為伺服器上面執行的程式帶來風險。這就是你要在效能與正確,安全性上面的取捨了。 (套句我朋友說的話,不可能又要馬兒好,又要馬兒不吃草的..)

最重要的調校參數就是 Connection 的 Pool 數量。(也就是那個Pool 裡面要放幾條的connection.) 這個參數是每一個應用程式都不一樣的。

min-pool-size 

Connection Pool 最少會存留的connection 數量

max-pool-size 

Connection Pool 最多可以開啓的 connection 數量

prefill

事先將connection pool 裡面建立好min-pool-size 的connection.

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