This document discusses Zend Server Job Queue, which allows offloading PHP code execution to improve perceived performance and manage load. It describes how to create and schedule jobs using the ZendJobQueue PHP API. Jobs can be created to run immediately, periodically on a schedule, or at a deferred time in the future. Parameters can be passed to jobs and their execution status reported.

1. Task Scheduling and Asynchronous Processing Evolved. Zend Server Job Queue By Sam Hennessy – Zend Professional Services Consultant

4. Blog Example Post comment Save in the DB Rebuild RSS feeds Send email notifications Display “Thank You” message

5. Blog Example Post comment Save in the DB Rebuild RSS feeds Send email notifications Display thank you message Queue Tasks Job Queue

6. Architectural Overview PHP + Job Queue Extension TCP or Unix Socket Job Queue Damon Persistent Storage (SQLite) HTTP Request Executing Server

11. Passing Parameters (example) $params = array( 'cart' => array( 'items' => array( array( 'id' => 324 , 'qty' => 1 , 'price' => 19.95 ), array( 'id' => 75 , 'qty' => 2 , 'price' => 14.95 , 'size' => 'XL' ) ), 'total' => 49.85 , 'coupon' => null , 'giftwrap' => true ), 'user' => $user ); $queue -> createHttpJob ( 'http://backend/jobs/checkout.php' , $params );

17. Job HTTP Request POST /job.php HTTP/1.0 Host: localhost Content-Type: text/json Content-Length: 34 Connection: close Accept: */* USER_AGENT: Zend Server Job Queue/4.1 Cookie: SESS273df6b85bb9a37ced781f806219fc6a=7k6atppt8akccooobs26htsim7; ZDEDebuggerPresent=php,phtml,php3 {"var1":15,"nested":["a","b","c"]}

18. Job HTTP Response HTTP/1.1 200 OK Date: Thu, 10 Sep 2009 17:29:20 GMT Server: Apache/2.2.9 (Debian) PHP/5.2.10 X-Powered-By: PHP/5.2.10 ZendServer/4.0 Set-Cookie: ZDEDebuggerPresent=php,phtml,php3; path=/ X-Job-Queue-Status: 1 Something is wrong! Vary: Accept-Encoding Content-Length: 152 Connection: close Content-Type: text/html array(2) { ["var1"]=> int(15) ["nested"]=> array(3) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" } }

19. Live Demo

20. Questions?