Gearman is an open-source software that provides a job queue to distribute tasks among multiple machines. It uses a simple request-response protocol that allows workers to perform tasks like processing images, sending email, and log analysis. Originally created by Brad Fitzpatrick in 2005, Gearman is widely used by companies like LiveJournal, Digg and Yahoo to distribute workloads and build asynchronous workflows.

1. Gearman Introduction
Shiqiang at 2011-11-18

2. What is gearman?
带 实现 协议
队
务调
构设计

3. Features
Open Source
Multi-language PHP C Perl Java etc
Flexible Application Design
Simple & Fast
Embeddable
No single point of failure

4. History
Danga Interactive 创
Author Brad Fitzpatrick
First Demo in 2005, written by perl

5. Author
Brad Fitzpatrick
Works
Memcached
MogileFS
Perlbal
Gearmand

6. How does it work?
Client 户 创 务 发
给 务 务
Worker 务 务
务
Job Server 务 务 协
调 户 务
给

7. How does it work?

8. Job Server
务
gearmand C
java-gearman-service java
Gearman::Server perl

9. Job Server Install
tar xzf gearmand-X.Y.tar.gz
cd gearmand-X.Y
./configure
make
make install

11. Client and Worker API
Gearman Command Line Tool
Gearman PHP Extension
Perl client
Python API
Ruby API
etc

12. Use Cases
LiveJournal Digg Yahoo etc
场
Sending Email
Image Processing
Map/Reduce
Asynchronous Queues
Pipeline Processing

13. Scatter/Gather

14. Scatter/Gather

15. Scatter/Gather Queries

16. Scatter/Gather Queries

17. Map/Reduce

18. Log Processing

19. Pipeline Processing

20. URL Processing

21. References
Gearman
Gearman Protocol
Danga
The First Gearman Demo
Brad Fitzpatrick
Drizzle

22. Thanks !