Speed up zing me – ntvv2 code with PHP extension module

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Speed up zing me – ntvv2 code with PHP extension module

  1. 1. 18/12/2010Speed up ZingMe-NTVV2 withPHP extension module By Nguyen Trung Thanh ZingMe Team leader Web Technical - VNG
  2. 2. ContentsIntroductionWhy?PHP extension basicSWIGSample
  3. 3. INTRODUCTION - ntvv2
  4. 4. Introduction• Ntvv2 (http://me.zing.vn/apps/ntvv2) – 1.M daily active user – Average 800 rps (per webserver) max 1100 rps – 9300 rps (all database servers) – 3 webservers• Use Membase for cache and storage• Use other db for secondary storage• All bussiness function is moved to PHP extension
  5. 5. Why to write PHP module?Make complicated Bussiness functions run faster, consume less memoryPHP high-level overhead cpu/memAdvance facility with PHP-FPM Cache something in PHP processStrictly Confidential – Do Not Distribute
  6. 6. PHP extension basicWhat is an extension?LifecycleSetting up a build environmenthttp://devzone.zend.com/article/4486http://devzone.zend.com/article/1021-Extension-Writing-Part-I- Introduction-to-PHP-and-Zend
  7. 7. What is an extension?Have you ever used PHP extension?PHP consist of many extensionsAll function we used is from extensions
  8. 8. Lifecycle
  9. 9. Setting up build environment- Setup PHP-devel- Sample extension
  10. 10. Is it complicated?● Is there any sexier and easier way?● We can use SWIG
  11. 11. SWIGSWIG is an interface compiler that connects programs written in C and C++ with scripting languages such as PHP, Python, Ruby...How SWIG worksUsing SWIGInstall module to PHP extensionsSampleStrictly Confidential – Do Not Distribute
  12. 12. How SWIG works
  13. 13. What does SWIG do for you ?NamespaceConstantsType conversion For simple types (int, float, char *, enum)Wraps complex types Pointers to structs and classesExposes functions
  14. 14. Using SWIGDefile module in swig fileGenerate source codeCreate module project, build it
  15. 15. Define moduleData typeWrapper class/functions %module ntvv2module %{ #include <string> #include <vector> #include <list> #include <string> #include “ntvvgame.h" %} struct LandInfo{ int id; std::string data; } ;Strictly Confidential – Do Not Distribute LandInfo updateLandInfo(int uid, int landID);
  16. 16. Exposure•Swig recognizes C/C++ declarationsstruct or classfunctions•Hiding elements%ignore solver::noupdate;%include “satsolver/solver.h”
  17. 17. Useful commands•Renaming%rename("to_s") asString();%rename( "name=" ) set_name( const char *name );%rename("empty?") empty();•Aliasing%alias get "[]";•Constants%constant int Script = C_CONSTANT;•Defines%define YUILogComponent "bindings"%enddef%define %macro(PARAMETER)
  18. 18. SWIG stepsGenerate codeCreate project, compiling – Add genterated code to projectRunning – Add extension module to PHP
  19. 19. SampleCache data in PHP moduleStrictly Confidential – Do Not Distribute
  20. 20. Q&A

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