Enterprise PHP Development

                 Ivo Jansch - ivo@ibuildings.com


                        php|works 2008

Enterprise PHP
What’s an Enterprise?
            “Any of several ships by that name
          in the Star Trek universe” – Wikipedia




Enterprise PHP
What’s an Enterprise?
            “Any of several ships by that name
          in the Star Trek universe” – Wikipedia




Enterprise PHP
What’s an Enterprise?
             “Any of several ships by that name
           in the Star Trek universe” – Wikipedia




“A business, company or comparable organization”
 Enterprise PHP
PHP usage is changing




Enterprise PHP
PHP usage is changing
•    1998
      •    Personal stuff




    Enterprise PHP
PHP usage is changing
•    1998
      •    Personal stuff

•    2003
      •    Simple websites
      •    Content management
      •    Blogs




    Enterprise PHP
PHP usage is changing
•    1998
      •    Personal stuff

•    2003
      •    Simple websites
      •    Content management
      •    Blogs

•    2008
      •    Big websites
      •    Banks
      •    Insurance Companies

    Enterprise PHP
PHP’s Quest so far

                             Enterprise



                                     SME


                                           SOHO



Enterprise PHP
Is PHP ‘enterprise ready’?




Enterprise PHP
Is PHP ‘enterprise ready’?




 Big                           Small
 Enterprise friendly           Lightweight

 enterpriCe                    Inexpensive

 CS required                   Easy to learn




    Enterprise PHP
A word from my girlfriend


            It's not the   SIZE of the tool...

                 It's how you USE it.




Enterprise PHP
Traditional PHP metaphor

                 PHP is like LEGO bricks




Enterprise PHP
Improved metaphor
                       PHP is no longer a toy
                 Let’s use the metaphor of actual bricks




Enterprise PHP
About Bricks


•    Extreme Simplicity
•    Easy to learn
•    Versatile
•    Inexpensive




    Enterprise PHP
Enterprise Development
                 In 10 steps




Enterprise PHP
Step 1 – The Team
     “I have read about your plans to build a new
         skyscraper and I am applying for a job.

I have a lot of experience with Bricks. I taught myself
   how to use them and have been maintaining our
           family shed for a few years now.”




 Enterprise PHP
Step 1 – The Team
• Be a Software Engineer
• Train your skills
• Study OO principles
• Consider Zend Certification



 Enterprise PHP
Step 2 - Requirements
• What does the customer want?
• What will visitors want?
• What does the customer really need?




 Enterprise PHP
Step 2 - Requirements
Functional Design
  •   Requirements Definition
  •   Interaction Design / Wireframes
  •   Flow Diagrams
  •   Tip: Axure




 Enterprise PHP
Step 3 - Architecture




Enterprise PHP
Step 3 - Architecture
Don’t just start stacking bricks




  Enterprise PHP
Step 3 - Architecture
Don’t just start stacking bricks




                             Create an architecture first

  Enterprise PHP
Step 3 - Architecture
Technical Design
  •   Modeling
      • Class Diagrams
      • ER Diagrams (data model)
      • Collaboration Diagrams
      • Use Cases etc.
  •   Tools:
      • UML
      • Whiteboards



  Enterprise PHP
Step 3 - Architecture
High Level Architectures:

   •   MVC (Model, View, Controller)
   •   SOA (Service Oriented Architecture)
   •   Multi-tier development (Frontend, Application, BL, Data)
   •   CBD (Component Based Development)




  Enterprise PHP
Step 4 - Tools




Enterprise PHP
Step 4 - Tools
You don’t need tools…




  Enterprise PHP
Step 4 - Tools
You don’t need tools…



                        But they make you productive




  Enterprise PHP
Step 4 - Tools
Development:
   •   Eclipse PDT
   •   Zend Studio
   •   PhpEd
   •   Vim
   •   Komodo

IDE’s versus Editors
   •   Debugging & Profiling
   •   Syntax Check
   •   Cross-Referencing / Navigation

  Enterprise PHP
Step 4 - Tools
Development:
   •   Eclipse PDT
   •   Zend Studio
   •   PhpEd
   •   Vim
   •   Komodo

IDE’s versus Editors
   •   Debugging & Profiling
   •   Syntax Check
   •   Cross-Referencing / Navigation

  Enterprise PHP
Step 4 - Tools




Enterprise PHP
Step 4 - Tools
Source Control
  •   CVS / SVN / MS VSS
  •   Bitkeeper / GIT




 Enterprise PHP
Step 4 - Tools
Source Control
  •   CVS / SVN / MS VSS
  •   Bitkeeper / GIT




Documentation
  •   phpDocumentor
       http://phpdoc.org

  •   PHPXRef

   
        http://phpxref.sourceforge.net

  •   Wiki
   
   
        http://en.wikipedia.org/wiki/List_of_wiki_software




 Enterprise PHP
Step 5 - Foundation




Enterprise PHP
Step 5 - Foundation
Start stacking bricks?
   •   How many bricks does it take?
   •   What about stability?




  Enterprise PHP
Step 5 - Foundation
Start stacking bricks?
   •   How many bricks does it take?
   •   What about stability?




                                   Start with a foundation


  Enterprise PHP
Step 5 - Foundation
Use a framework
  •   Provides guidelines (frame)
  •   Off the shelf components

Examples
  •   Zend Framework – http://framework.zend.com
  •   ezComponents – http://ez.no/ezcomponents
  •   Symfony – http://www.symfony-project.org
  •   ATK – http://www.atk-framework.com




 Enterprise PHP
Step 5 - Foundation
The “Not Invented Here” Syndrome:


  •   “The existing frameworks are no good.
      
 
 I can do this better.”
  •   “This framework is no good.
      
 
 It can do A through Y but I need Z.”
  •   “This framework is too big.
      
 
 It provides A-Z but we only need A and B.”
  •   “I know there's a good framework.
      
 
 But I would like to learn.”



 Enterprise PHP
Step 6 - Design Patterns

                     Requirement 1056.4:

           We need to be able to look outside,
           but we can't make holes in the wall
             (rain should be kept outside).

                 When it's sunny, a hole is ok.


Enterprise PHP
Step 6 - Design Patterns




Enterprise PHP
Step 6 - Design Patterns
• A ‘window’ is a concept
  •   Best practice way of solving a particular problem




 Enterprise PHP
Step 6 - Design Patterns
• A ‘window’ is a concept
  •   Best practice way of solving a particular problem

• In IT, we call this a ‘design pattern’




 Enterprise PHP
Step 6 - Design Patterns
• A ‘window’ is a concept
  •   Best practice way of solving a particular problem

• In IT, we call this a ‘design pattern’
• Popular patterns in PHP:
  •   MVC, Factory, Singleton, Registry, Decorator




 Enterprise PHP
Step 6 - Design Patterns
• A ‘window’ is a concept
  •   Best practice way of solving a particular problem

• In IT, we call this a ‘design pattern’
• Popular patterns in PHP:
  •   MVC, Factory, Singleton, Registry, Decorator

• Good read:
  •   php|architect's Guide to PHP Design Patterns
      
- Jason E. Sweat



 Enterprise PHP
Step 7 - Testing




  Is your software tested after it has gone live?
Enterprise PHP
Step 7 - Testing
Various types of testing:
   •   Developer testing
   •   Functional testing
   •   Environment testing
   •   Performance testing
   •   Usability testing




  Enterprise PHP
Step 7 - Testing
                 A common scenario…




Enterprise PHP
Step 7 - Testing
                   The user complains…




                 MWOEHA!
                  BUG!




Enterprise PHP
Step 7 - Testing
             Developer attacks the problem…




                 fix_bug();




Enterprise PHP
Step 7 - Testing
                   Problem Solved!




Enterprise PHP
Step 7 - Testing




Enterprise PHP
Step 7 - Testing
• Solution: Unit Tests
   •    Automated testing after each change
   •    Prevents regressions




  Enterprise PHP
Step 7 - Testing
• Solution: Unit Tests
   •    Automated testing after each change
   •    Prevents regressions

• Testing for PHP applications:
   •    PHPUnit

 
 
 
     http://www.phpunit.de/ 

   •    SimpleTest
 
 
 
   http://www.lastcraft.com/simple_test.php




  Enterprise PHP
Step 7 - Testing
• Solution: Unit Tests
   •    Automated testing after each change
   •    Prevents regressions

• Testing for PHP applications:
   •    PHPUnit

 
 
 
     http://www.phpunit.de/ 

   •    SimpleTest
 
 
 
   http://www.lastcraft.com/simple_test.php


• Continuous Integration:
   •CruiseControl

 
       http://cruisecontrol.sourceforge.net/

   •    phpUnderControl
    http://www.phpundercontrol.org/




  Enterprise PHP
Step 7 - Testing
• Test Driven Development
  1. Define functionality
  2. Create testcase
  3. Run test => test fails
  4. Implement functionality
     •   Test succeeds? Done
     •   Test fails? Refactor

  Repeat step 4 until finished




 Enterprise PHP
Step 8 - Optimization

                 Users are reporting:


        "I work on the 197th floor. Every day I
       have to walk the stairs for 2 hours, then I
         have only 4 hours left to do my job."




Enterprise PHP
Step 8 - Optimization
                  Solution: Elevator




Enterprise PHP
Step 8 - Optimization




Enterprise PHP
Step 8 - Optimization
In PHP, this ‘elevator’ is called an ‘accelerator’




  Enterprise PHP
Step 8 - Optimization
In PHP, this ‘elevator’ is called an ‘accelerator’

   •   This is how PHP works (pseudo-ish code):
       read index.php;           // enter the building
       compile index.php;         // go to floor 197
       echo “Hello World”;        // get the job done




  Enterprise PHP
Step 8 - Optimization
In PHP, this ‘elevator’ is called an ‘accelerator’

   •   This is how PHP works (pseudo-ish code):
       read index.php;            // enter the building
       compile index.php;          // go to floor 197
       echo “Hello World”;         // get the job done


   •   An accelerator improves the first 2 steps




  Enterprise PHP
Step 8 - Optimization
In PHP, this ‘elevator’ is called an ‘accelerator’

   •   This is how PHP works (pseudo-ish code):
       read index.php;                  // enter the building
       compile index.php;                // go to floor 197
       echo “Hello World”;               // get the job done


   •   An accelerator improves the first 2 steps


   •   Accelerators for PHP:
       •   APC

 
 
 
       http://pecl.php.net/package/APC
       •   eAccelerator
 
   http://eaccelerator.net/
       •   Zend Platform

   http://www.zend.com/products/zend_platform


  Enterprise PHP
Step 8 - Optimization

                    Users complain:


          “Every time I want coffee I have to go
              to the top floor to get some.”




Enterprise PHP
Step 8 - Optimization




Enterprise PHP
Step 8 - Optimization
• Solution:
  •    Create small coffee corners on every floor so people don’t
       have to go to the main restaurant every time.




 Enterprise PHP
Step 8 - Optimization
• Solution:
   •    Create small coffee corners on every floor so people don’t
        have to go to the main restaurant every time.

• In PHP we call this caching
   •    Don’t query the database everytime you need data
   •    Use locally stored copy (file or memory)




  Enterprise PHP
Step 8 - Optimization
• Solution:
   •    Create small coffee corners on every floor so people don’t
        have to go to the main restaurant every time.

• In PHP we call this caching
   •    Don’t query the database everytime you need data
   •    Use locally stored copy (file or memory)

• PHP Caching solutions:
   •Zend_Cache
 
          http://framework.zend.com

   •    Zend Platform
 
   http://www.zend.com/products/zend_platform

   •    Memcached
 
 
     http://danga.com/memcached/



  Enterprise PHP
Step 9 - Deployment
•    Lifecycle:
     •    Develop
     •    Test
     •    Deploy to staging environment
     •    Deploy to live


•    Use SVN
•    Code is just a part, don't forget the database
•    Create a 'Deployment & Release Profile'

    Enterprise PHP
Step 9 - Deployment
                    System Architecture


                       PHP
                                 MySQL
                     Apache
                             Linux


    From a simple single machine LAMP stack…
Enterprise PHP
Step 9 - Deployment




   … to a High Availability, Scalable Architecture
Enterprise PHP
Step 10 - Operations

Monitoring:


  •   Logfiles
  •   Monitor infrastructure (tools such as Nagios)
  •   Monitor application (tools such as Zend Platform)
  •   Monitor business (is the money still pouring in?)




 Enterprise PHP
Step 10 - Operations
Debugging

  •   Ideal:

      “I had error x when I selected y after I clicked z”

  •   Reality:

      “It doesn't work!”
      “What exactly doesn't work, and what did you do?”
      “It just ******** didn't work, FIX IT.”



 Enterprise PHP
Step 10 - Operations

Solutions:
   •   A ‘root cause’
       analysis tool
   •   Logging
   •   Context Capture




  Enterprise PHP
Step 10 - Operations

Change management:


  •   Ticket system
  •   Stick to your deployment - use the DRP
  •   DON'T TOUCH THE LIVE ENVIRONMENT. EVAH!




 Enterprise PHP
The Big Picture
                   (We’re almost done)




Enterprise PHP
The Big Picture




Enterprise PHP
The Big Picture
• No ‘cowboy coding’, but structured steps
  •   Higher quality
  •   Software will be easier to maintain (and cheaper)




 Enterprise PHP
The Big Picture
• No ‘cowboy coding’, but structured steps
  •   Higher quality
  •   Software will be easier to maintain (and cheaper)

• Development methodology
  •   Waterfall
  •   Agile (DSDM, XP, Scrum)




 Enterprise PHP
The Big Picture
• No ‘cowboy coding’, but structured steps
  •   Higher quality
  •   Software will be easier to maintain (and cheaper)

• Development methodology
  •   Waterfall
  •   Agile (DSDM, XP, Scrum)

• Software Development Life Cycle (SDLC)
  •   Adapt from existing methods, learn from experts
  •   Document it properly
  •   Make it the cornerstone of your development efforts

 Enterprise PHP
More things to think about

• Planning
• Coding
• Implementation
• Security


 Enterprise PHP
Shameless Plug
Book about this all:
   •   php|architect’s Guide to
       Enterprise PHP Development
   •   ISBN: 978-0-9738621-8-8
   •   Order at phparch.com
       or amazon.com
   •   http://www.enterprisephp.nl




  Enterprise PHP
Questions?
                    ivo@ibuildings.com
                 http://www.ibuildings.com
                    http://www.jansch.nl
                 http://joind.in/talk/view/65
Enterprise PHP

Phpworks enterprise-php-1227605806710884-9

  • 1.
    Enterprise PHP Development Ivo Jansch - ivo@ibuildings.com php|works 2008 Enterprise PHP
  • 2.
    What’s an Enterprise? “Any of several ships by that name in the Star Trek universe” – Wikipedia Enterprise PHP
  • 3.
    What’s an Enterprise? “Any of several ships by that name in the Star Trek universe” – Wikipedia Enterprise PHP
  • 4.
    What’s an Enterprise? “Any of several ships by that name in the Star Trek universe” – Wikipedia “A business, company or comparable organization” Enterprise PHP
  • 5.
    PHP usage ischanging Enterprise PHP
  • 6.
    PHP usage ischanging • 1998 • Personal stuff Enterprise PHP
  • 7.
    PHP usage ischanging • 1998 • Personal stuff • 2003 • Simple websites • Content management • Blogs Enterprise PHP
  • 8.
    PHP usage ischanging • 1998 • Personal stuff • 2003 • Simple websites • Content management • Blogs • 2008 • Big websites • Banks • Insurance Companies Enterprise PHP
  • 9.
    PHP’s Quest sofar Enterprise SME SOHO Enterprise PHP
  • 10.
    Is PHP ‘enterpriseready’? Enterprise PHP
  • 11.
    Is PHP ‘enterpriseready’?  Big  Small  Enterprise friendly  Lightweight  enterpriCe  Inexpensive  CS required  Easy to learn Enterprise PHP
  • 12.
    A word frommy girlfriend It's not the SIZE of the tool... It's how you USE it. Enterprise PHP
  • 13.
    Traditional PHP metaphor PHP is like LEGO bricks Enterprise PHP
  • 14.
    Improved metaphor PHP is no longer a toy Let’s use the metaphor of actual bricks Enterprise PHP
  • 15.
    About Bricks • Extreme Simplicity • Easy to learn • Versatile • Inexpensive Enterprise PHP
  • 16.
    Enterprise Development In 10 steps Enterprise PHP
  • 17.
    Step 1 –The Team “I have read about your plans to build a new skyscraper and I am applying for a job. I have a lot of experience with Bricks. I taught myself how to use them and have been maintaining our family shed for a few years now.” Enterprise PHP
  • 18.
    Step 1 –The Team • Be a Software Engineer • Train your skills • Study OO principles • Consider Zend Certification Enterprise PHP
  • 19.
    Step 2 -Requirements • What does the customer want? • What will visitors want? • What does the customer really need? Enterprise PHP
  • 20.
    Step 2 -Requirements Functional Design • Requirements Definition • Interaction Design / Wireframes • Flow Diagrams • Tip: Axure Enterprise PHP
  • 21.
    Step 3 -Architecture Enterprise PHP
  • 22.
    Step 3 -Architecture Don’t just start stacking bricks Enterprise PHP
  • 23.
    Step 3 -Architecture Don’t just start stacking bricks Create an architecture first Enterprise PHP
  • 24.
    Step 3 -Architecture Technical Design • Modeling • Class Diagrams • ER Diagrams (data model) • Collaboration Diagrams • Use Cases etc. • Tools: • UML • Whiteboards Enterprise PHP
  • 25.
    Step 3 -Architecture High Level Architectures: • MVC (Model, View, Controller) • SOA (Service Oriented Architecture) • Multi-tier development (Frontend, Application, BL, Data) • CBD (Component Based Development) Enterprise PHP
  • 26.
    Step 4 -Tools Enterprise PHP
  • 27.
    Step 4 -Tools You don’t need tools… Enterprise PHP
  • 28.
    Step 4 -Tools You don’t need tools… But they make you productive Enterprise PHP
  • 29.
    Step 4 -Tools Development: • Eclipse PDT • Zend Studio • PhpEd • Vim • Komodo IDE’s versus Editors • Debugging & Profiling • Syntax Check • Cross-Referencing / Navigation Enterprise PHP
  • 30.
    Step 4 -Tools Development: • Eclipse PDT • Zend Studio • PhpEd • Vim • Komodo IDE’s versus Editors • Debugging & Profiling • Syntax Check • Cross-Referencing / Navigation Enterprise PHP
  • 31.
    Step 4 -Tools Enterprise PHP
  • 32.
    Step 4 -Tools Source Control • CVS / SVN / MS VSS • Bitkeeper / GIT Enterprise PHP
  • 33.
    Step 4 -Tools Source Control • CVS / SVN / MS VSS • Bitkeeper / GIT Documentation • phpDocumentor http://phpdoc.org • PHPXRef http://phpxref.sourceforge.net • Wiki http://en.wikipedia.org/wiki/List_of_wiki_software Enterprise PHP
  • 34.
    Step 5 -Foundation Enterprise PHP
  • 35.
    Step 5 -Foundation Start stacking bricks? • How many bricks does it take? • What about stability? Enterprise PHP
  • 36.
    Step 5 -Foundation Start stacking bricks? • How many bricks does it take? • What about stability? Start with a foundation Enterprise PHP
  • 37.
    Step 5 -Foundation Use a framework • Provides guidelines (frame) • Off the shelf components Examples • Zend Framework – http://framework.zend.com • ezComponents – http://ez.no/ezcomponents • Symfony – http://www.symfony-project.org • ATK – http://www.atk-framework.com Enterprise PHP
  • 38.
    Step 5 -Foundation The “Not Invented Here” Syndrome: • “The existing frameworks are no good. I can do this better.” • “This framework is no good. It can do A through Y but I need Z.” • “This framework is too big. It provides A-Z but we only need A and B.” • “I know there's a good framework. But I would like to learn.” Enterprise PHP
  • 39.
    Step 6 -Design Patterns Requirement 1056.4: We need to be able to look outside, but we can't make holes in the wall (rain should be kept outside). When it's sunny, a hole is ok. Enterprise PHP
  • 40.
    Step 6 -Design Patterns Enterprise PHP
  • 41.
    Step 6 -Design Patterns • A ‘window’ is a concept • Best practice way of solving a particular problem Enterprise PHP
  • 42.
    Step 6 -Design Patterns • A ‘window’ is a concept • Best practice way of solving a particular problem • In IT, we call this a ‘design pattern’ Enterprise PHP
  • 43.
    Step 6 -Design Patterns • A ‘window’ is a concept • Best practice way of solving a particular problem • In IT, we call this a ‘design pattern’ • Popular patterns in PHP: • MVC, Factory, Singleton, Registry, Decorator Enterprise PHP
  • 44.
    Step 6 -Design Patterns • A ‘window’ is a concept • Best practice way of solving a particular problem • In IT, we call this a ‘design pattern’ • Popular patterns in PHP: • MVC, Factory, Singleton, Registry, Decorator • Good read: • php|architect's Guide to PHP Design Patterns - Jason E. Sweat Enterprise PHP
  • 45.
    Step 7 -Testing Is your software tested after it has gone live? Enterprise PHP
  • 46.
    Step 7 -Testing Various types of testing: • Developer testing • Functional testing • Environment testing • Performance testing • Usability testing Enterprise PHP
  • 47.
    Step 7 -Testing A common scenario… Enterprise PHP
  • 48.
    Step 7 -Testing The user complains… MWOEHA! BUG! Enterprise PHP
  • 49.
    Step 7 -Testing Developer attacks the problem… fix_bug(); Enterprise PHP
  • 50.
    Step 7 -Testing Problem Solved! Enterprise PHP
  • 51.
    Step 7 -Testing Enterprise PHP
  • 52.
    Step 7 -Testing • Solution: Unit Tests • Automated testing after each change • Prevents regressions Enterprise PHP
  • 53.
    Step 7 -Testing • Solution: Unit Tests • Automated testing after each change • Prevents regressions • Testing for PHP applications: • PHPUnit http://www.phpunit.de/ • SimpleTest http://www.lastcraft.com/simple_test.php Enterprise PHP
  • 54.
    Step 7 -Testing • Solution: Unit Tests • Automated testing after each change • Prevents regressions • Testing for PHP applications: • PHPUnit http://www.phpunit.de/ • SimpleTest http://www.lastcraft.com/simple_test.php • Continuous Integration: •CruiseControl http://cruisecontrol.sourceforge.net/ • phpUnderControl http://www.phpundercontrol.org/ Enterprise PHP
  • 55.
    Step 7 -Testing • Test Driven Development 1. Define functionality 2. Create testcase 3. Run test => test fails 4. Implement functionality • Test succeeds? Done • Test fails? Refactor Repeat step 4 until finished Enterprise PHP
  • 56.
    Step 8 -Optimization Users are reporting: "I work on the 197th floor. Every day I have to walk the stairs for 2 hours, then I have only 4 hours left to do my job." Enterprise PHP
  • 57.
    Step 8 -Optimization Solution: Elevator Enterprise PHP
  • 58.
    Step 8 -Optimization Enterprise PHP
  • 59.
    Step 8 -Optimization In PHP, this ‘elevator’ is called an ‘accelerator’ Enterprise PHP
  • 60.
    Step 8 -Optimization In PHP, this ‘elevator’ is called an ‘accelerator’ • This is how PHP works (pseudo-ish code): read index.php; // enter the building compile index.php; // go to floor 197 echo “Hello World”; // get the job done Enterprise PHP
  • 61.
    Step 8 -Optimization In PHP, this ‘elevator’ is called an ‘accelerator’ • This is how PHP works (pseudo-ish code): read index.php; // enter the building compile index.php; // go to floor 197 echo “Hello World”; // get the job done • An accelerator improves the first 2 steps Enterprise PHP
  • 62.
    Step 8 -Optimization In PHP, this ‘elevator’ is called an ‘accelerator’ • This is how PHP works (pseudo-ish code): read index.php; // enter the building compile index.php; // go to floor 197 echo “Hello World”; // get the job done • An accelerator improves the first 2 steps • Accelerators for PHP: • APC http://pecl.php.net/package/APC • eAccelerator http://eaccelerator.net/ • Zend Platform http://www.zend.com/products/zend_platform Enterprise PHP
  • 63.
    Step 8 -Optimization Users complain: “Every time I want coffee I have to go to the top floor to get some.” Enterprise PHP
  • 64.
    Step 8 -Optimization Enterprise PHP
  • 65.
    Step 8 -Optimization • Solution: • Create small coffee corners on every floor so people don’t have to go to the main restaurant every time. Enterprise PHP
  • 66.
    Step 8 -Optimization • Solution: • Create small coffee corners on every floor so people don’t have to go to the main restaurant every time. • In PHP we call this caching • Don’t query the database everytime you need data • Use locally stored copy (file or memory) Enterprise PHP
  • 67.
    Step 8 -Optimization • Solution: • Create small coffee corners on every floor so people don’t have to go to the main restaurant every time. • In PHP we call this caching • Don’t query the database everytime you need data • Use locally stored copy (file or memory) • PHP Caching solutions: •Zend_Cache http://framework.zend.com • Zend Platform http://www.zend.com/products/zend_platform • Memcached http://danga.com/memcached/ Enterprise PHP
  • 68.
    Step 9 -Deployment • Lifecycle: • Develop • Test • Deploy to staging environment • Deploy to live • Use SVN • Code is just a part, don't forget the database • Create a 'Deployment & Release Profile' Enterprise PHP
  • 69.
    Step 9 -Deployment System Architecture PHP MySQL Apache Linux From a simple single machine LAMP stack… Enterprise PHP
  • 70.
    Step 9 -Deployment … to a High Availability, Scalable Architecture Enterprise PHP
  • 71.
    Step 10 -Operations Monitoring: • Logfiles • Monitor infrastructure (tools such as Nagios) • Monitor application (tools such as Zend Platform) • Monitor business (is the money still pouring in?) Enterprise PHP
  • 72.
    Step 10 -Operations Debugging • Ideal: “I had error x when I selected y after I clicked z” • Reality: “It doesn't work!” “What exactly doesn't work, and what did you do?” “It just ******** didn't work, FIX IT.” Enterprise PHP
  • 73.
    Step 10 -Operations Solutions: • A ‘root cause’ analysis tool • Logging • Context Capture Enterprise PHP
  • 74.
    Step 10 -Operations Change management: • Ticket system • Stick to your deployment - use the DRP • DON'T TOUCH THE LIVE ENVIRONMENT. EVAH! Enterprise PHP
  • 75.
    The Big Picture (We’re almost done) Enterprise PHP
  • 76.
  • 77.
    The Big Picture •No ‘cowboy coding’, but structured steps • Higher quality • Software will be easier to maintain (and cheaper) Enterprise PHP
  • 78.
    The Big Picture •No ‘cowboy coding’, but structured steps • Higher quality • Software will be easier to maintain (and cheaper) • Development methodology • Waterfall • Agile (DSDM, XP, Scrum) Enterprise PHP
  • 79.
    The Big Picture •No ‘cowboy coding’, but structured steps • Higher quality • Software will be easier to maintain (and cheaper) • Development methodology • Waterfall • Agile (DSDM, XP, Scrum) • Software Development Life Cycle (SDLC) • Adapt from existing methods, learn from experts • Document it properly • Make it the cornerstone of your development efforts Enterprise PHP
  • 80.
    More things tothink about • Planning • Coding • Implementation • Security Enterprise PHP
  • 81.
    Shameless Plug Book aboutthis all: • php|architect’s Guide to Enterprise PHP Development • ISBN: 978-0-9738621-8-8 • Order at phparch.com or amazon.com • http://www.enterprisephp.nl Enterprise PHP
  • 82.
    Questions? ivo@ibuildings.com http://www.ibuildings.com http://www.jansch.nl http://joind.in/talk/view/65 Enterprise PHP