Skip to main content

Red Hat JBoss Fuse - Getting Started Home Loan Demo version 6.2 Part 6

This is the 6th part of my getting started demo for JBoss FUSE 6.2, an update from my old demo project.  For people that are getting started to know Fuse, and wants to get their hands dirty and develop a JBoss Fuse project.

There is a series of blogs/videos, you can find the previous post here:


First part of demo was to take in and process the information, first we separates the 2 kinds of files, because they are handled differently. And send it to separate messaging broker.
Second demo was about processing the customer data, by reading the xml file and store it into a existing database table.
Third part starts to process housing data by getting number of schools surrounding the house address via SAAS. Forth part does the actual housing value appraisal and store it into database.
Fifth part demo, was the last part of developing this application, which as to add a Restful Web service, providing all the housing appraisal result combining the customer details. 

It's time we start running this application and see how it works, first we are going to start up JBoss Fuse, as our example needs to have a running message broker to deliver data between each distributed microservices. And new in JBoss Fuse 6.2, it has introduce this very helpful and nice ability in the development tool to allow user to do debugging while developing this route. While running the debugging mode, we can configure which node we would like to place the breakpoint, so when the message reach the breakpoint the route will pause to allow user to see how the application is doing,  you will be cable to see the running thread, value of the Camel header, body, this is particular useful, because we will have better idea of how the message has been changed by each processor. There is an option to set condition breakpoint which it will only pause then the criteria it meet. 

Please see the video for more details about the debugging tools.


To run it, you can find the source project in my github.
https://github.com/jbossdemocentral/jboss-fuse-homeloan

Comments

Popular posts from this blog

Red Hat Fuse - Announcing Fuse 7 Tech preview 3 release.

Red Hat Fuse 7.0 technical preview three is out today! On the pathway to become one of the best cloud-native integration platform, Fuse gives developer freedom to choose how they want to develop the integration solution, where they want to deploy it and capabilities to address new integration personas that do not have development experience.
By supporting the three major runtime, developer is free to work on the runtime of their choice.By supporting standalone and cloud deployment, it simplifies the complexity to distinguish between these environments, allowing application to deploy freely among the environment of your choice. All levels of developers are welcome, you can either dive deep into creating customize complex integration logic, or using the new low code platform to quickly build a simple integration. In this Tech Preview release you get it all.
Fuse StandaloneSpring-boot for microserviceKaraf 4 for OSGi loverJBoss EAP for JavaEE developersFuse on OpenShiftPlugins for easy co…

JBoss EAP 6 - 效能調校 (一) DataSource 的 Connection Pool

效能沒有什麼Best Practice, 反正能調整的就那些。 通常,一個程式的效能大概有70-80% 都跟程式怎麼寫的其實比較有關係。

最近我最疼愛的小貓Puji 因為膀胱結石開刀的時候過世了,心情很差請原諒我的口氣沒有很好,也沒有心情寫部落格。

Puji R.I.P.

=======================正文=======================

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.

我的建議是觀察一下平常程式要用到的量設定為 min-pool-size 。
加上…

Fuse - Contract First API Design with Apicurio and Fuse/Camel - Part One

This is part one of my two-article series that demonstrates the approach of implementing contract-first API design using Apicurioand Red Hat Fuse.

It covers how to create an OpenAPI standard document as the contract between API providers and consumers using Apicurio. It also shows how to quickly create mock tests using Red Hat Fuse.

There are two common approaches of creating these APIs.
Code FirstContract First Coming from a old time ESB developer, these are not new. We have been doing this forever. Before, it was the WSDL that define the contract of the service. we were doing a lot more code first, for me it's simply because it's much easier for me to write couple of Java classes and generate the WSDL for my consumer. 

It's often pretty straightforward if the consumer of your application has finalized how they want the service to be like. But you and I all know this is not often the case. So I had to go back to my code, and make the changes accordingly and pray I did not …