Would Mr. Spok choose Open Source

Would Mr. Spok choose Open Source?

Ing. Jan VlčinskýGIS Ostrava 2009: 28.1.2009

Lessons learned from 8 years of field experience with Open Source platform for commercial web applications

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28.1.2009 GIS Ostrava: Jan Vlčinský: Would Mr. Spok choose Open Source? 2

Jan Vlčinský and Open Source

Running own SW development company since 1992 Last 8 years

Commercial web applications Based on Open Source platform Traffic Information processing

Nowadays - single as a freelance analyst Traffic Information IS SW development


Your and mine wishes

Be expert in new technologies Investigate new posibilities Build "nice-looking" solutions Deliver great functionality Please our clients Complete projects on time and budget Make our living

Our wishes are our problem


Who are we?

Student Researcher SW developer Enterpreneur

How are our wishes compatible with our role?


Today topic: How to fulfill our real mission

Using Open Source, how to: Safely complete the task Take advantages available Prevent distractions Be efficient

I will try to answer these questions


Now serious topics

Overview of Our projects Technologies used

Requirements for Commercial web application

Technical Business

Lessons learned - practical advice



Time, projects and technologies

PHP+Firebird 2001-2003

Java (+Tomcat+JBoss) 2003-2005

+GIS (+RichWeb) 2005-2008


Application types

User interaction Up to 720 users

Using digital maps Realtime Import/Export/Distribute

import from 3 systems Export to 10 systems


Languages and platform

PHP + Java Firebird +

PostgreSQL+PostGIS Tomcat+Turbine+

JbossAS+JBossESB


Business reqs and prefs for Commercial web application

Licencing Prefer open source solutions Allow to develop closed source application Strictly follow license agreements

Programmer and overall Productivity this is longer story, next page...


Programmer and overall Productivity

Keep set of technologies minimal and simple. Reliable components Provide enough functional tools Platform must not require too much fine tuning Platform stable in time. Available programmers for given technology Reachable technical support Stick to standards to allow component exchange


Technical reqs and prefsAreas

General Requirements Environment Map related User friendly interface Performace ManageabilityIllustrated on - Creating and processing Traffic Information at Czech Police


General Technical Requirements

Web application Pure web browser (no add-ins) Data persistence

simply „commercial web application“


Environment Requirements

Integrate with client Identity system Run in isolated Intranet Interact with outer systems Run on MS Windows as well as on Linux


Map related requirements

Show interactive maps. Show custom maps Full text search in maps. Allow updating maps few times a year


User friendly interface

Provide Rich web UI Nice Responsive (AJAX)

Notify user about server events UI automatically changes according to data changed on

server: „server push“


Performace requirements

Handle 50 concurrent users on today HW Failover capability Archive and clean old data Optimize for limited bandwidth Scalability


Manageability requirements

Easy license management Allow monitoring parameters Provide monitoring system


Summary of (quite numerous) Technical requirements

General technical Web application No add-ins Data persistence.

Environment Integrate with Identity system. Run in isolated Intranet. Interact with outer systems. MS Windows + Linux

Map related Interactive maps. Custom maps Full text search Updating maps

User friendly interface Provide Rich web UI. Notify user about server events

Performace Handle 50 concurrent users on today

HW Failover capability. Archive and clean old data Optimize for limited bandwidth. Scalability.

Manageability Easy license management. Allow monitoring parameters. Provide monitoring system.


Galery of our projects

DIZAS and DIS Traffic News v1 National Traffic Information Center Prokop (RDS TMC) eRDIS Traffic News v2 CDI2 and CDI3


DIZAS and DIS

Collect, process and distribute traffic information

No maps yet. PHP allows building complex solutions, but has limits Firebird works well to certain scale, with growing number

of transactions and records, performance drops Java Applets are tricky Apache web server works betterthen IIS: Linux on server is stable


Traffic News v1

Show traffic information to end users.

No maps yet. PHP + Firebird for

“preview simple data” application work nice.

Simplicity is nice.


(NTIC) National Traffic Information Center

Allow entering and viewing traffic information to 250 institutions and 720 users.

No maps yet. Java as a language is forcing to code in clean and

tidy way. Suitable for longer and bigger projects. Apache Turbine framework was surprisingly very

functional. Triactive JDO for object persistence was excellent.


Prokop (RDS TMC)

Broadcast traffic information for navigation systems using RDS TMC technology.

Java and JBoss AS is well suited for real time with messaging.

Java and real time works excellently PostgreSQL on MS Windows works JDO pays back in database portability LTS Linux distribution would be better


eRDIS

Collect, process and distribute traffic informationDigital maps used.

DWR and AJAX works well. JBoss AS proved suitability for web applications. ActiveMQ and JBossMQ: JMS is worth to trust. Deegree WMS, real performace needs cashed images. Speed of Lucene full text search is astonishing. JGraphT for path finding: very responsive PostgreSQL and PostGIS: Just take it.


Traffic News v2

Show traffic information to end users.

Using digital maps. Adopting EJB3 too early. Apache XMLBeans have simplified many tasks for

XML (XML structures, data population, serialization, validation)


CDI2 and CDI3

Collect, export, distribute, import and utilize traffic information at Czech police.

JPA (EJB3 Persistency) already works. JBossESB: works and very promissing. Allows splitting

architectire. Smooks: framework for transforming streams of data to

various formats. Very prommising, but too early in JBossESB (nowadays probably ok).

Quartz is excellent schedulling component.


Featured Open Source projects

There are too many, see conference proceedings

Operating system, Programming Language, Database Systems, Object-relational mapping (ORM), Application Server,

Messaging (JMS), Messaging (ESB), AJAX, OGC WMS - Web Map Server, Web map client,

Templating, Fulltext, Scheduler, Geo and topo calculations, Monitoring

God bless all the originators and authors.

Thank you!!!

file:///C:/Users/javl/Documents/@Projekty/@firma/@odbyt/GIS%20Ostrava%202009/Tasks/Open%20Source/opensource.gif


Lessons Learned

Real meaning of Open Source Balancing offerings and needs Anticipating future Consider less upgrades Use advantages of Open Source Develop personal discipline

Preventing unnecessary troubles


Real meaning of Open Source

Open Source platform works Gallery of our projects is a proof

Choose commercial friendly licence GNU LGPL, Apache 2.0 License, and BSD License. GNU GPL with Linking exception might be used Standalone systems (Nagios, Linux) can go GNU GPL


Balancing Offerings and needs

There are many open source components available See references.

Use complete, but minimal set of technologies Going too wide and wild fails in future. Do not behave as an expert, but as an enterpreneur.

Adopting too early is expensive Evaluate carefully and ask others. It might happen sometime.


Anticipating the future

Expect your solutions to grow Example Firebird Example Scaling JBoss

Try to be OS independent Windows is sometime required. Use portable technologies.


Consider less upgrades

Preffer creating solution for client over being at the bleeding edge with technology.

Sometime you are forced to upgrade. Just upgrade conciously.


Lessons Learned: Summary

Open Source works Be business-like regardles of Open/Closed source

platform. Top 3 recommendations

Choose complete, but minimal number of technologies Consider less upgrades Do not adopt new technologies too early

What would Mr. Spok answer?


Would Mr. Spok choose Open Source?

Better question:How would Mr. Spok adopt Open Source

platform?

YES!


What to do next?

See my paper in conference proceedings 26 pages 58 references 54 terms and abbreviations explained 15 recommendations

What can I do for you? As a freelance analyst I offer you my advice,

products or partnership.


Throw here your Questions


Thank you

Ing. Jan Vlčinský

www.cad-programs.com

[email protected]

[email protected]

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Would Mr. Spok choose Open Source

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