Gearman is a job server that allows clients to distribute jobs to workers. It manages communication between clients and workers, which can be written in different programming languages. Clients submit jobs to Gearman that workers then process asynchronously. Gearman provides features like parallel processing, callbacks, prioritization, and monitoring of job status. It allows scaling applications by distributing work across multiple workers.

1. Scaling like a pro
with
Gearman

2. Me?
Web developer at... well yet another startup!
Contributor to Symfony web framework
Find me on Twitter @kertz

3. My idea of scaling...

4. What is Gearman?
A Job server
Client API
Worker API
...and lots of client & worker API libraries

5. What’s a job server?
Manages the communication between clients
and workers

6. Client & Worker
The client asks the worker to do a specific job
The worker does what the client asks, oh yeah!
More importantly it’s language independent!
PHP Gearman extension

7. How does it work?

8. A Simple Worker
Worker

9. Calling the worker
Client

10. Making it work
Start gearmand in your terminal
You can use -vvv for verbose mode
Run the worker and client
Foreground and background jobs

11. Status of Work
Numerator/Denominator(X of Y)
Store the status in memcache/APC
Store in MySQL, Drizzle

12. Knowing The Status
Worker

13. Knowing The Status
Client

14. Knowing The Status
Result

15. Parallel Tasks
Client

16. Callbacks
Client

17. Callbacks
Worker

18. Prioritize Work
Note: Separate queues for each priority level

19. Managing Worker
cron
Gearman Manager
https://github.com/brianlmoon/GearmanManager
supervisord

20. In Retrospect
Easily manage client-worker relationship
Language independent (PHP, C, Perl etc.)
Parallel, Callbacks, Priorities
Managing Workers

21. Questions?