了解gearman，请访问gearman官网：gearman.org/
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安装Gearman:
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基础依赖库：
立即学习“Python免费学习笔记（深入）”；
yum install boost-devel libevent-devel sqlite-devel libuuid-devel wget https://launchpad.net/gearmand/trunk/0.33/+download/gearmand-0.33.tar.gz tar xzvf gearmand-0.33.tar.gz cd gearmand-0.33 ./configure make make install
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安装Gearman Python客户端
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wget http://pypi.python.org/packages/source/g/gearman/gearman-2.0.2.tar.gz#md5=3847f15b763dc680bc672a610b77c7a7
tar xvzf gearman-2.0.2.tar.gz
python setup.py install获取直接用自动安装： easy_install gearman
启动服务：gearmand -d
启动Worker：gearman -w -f wc -- wc -l &
-w 代表启动的是worker，-f wc 代表启动一个task名字为wc， -- wc -l表示这个task是做wc -l 统计行数。
启动Client：gearman -f wc
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python work代码：
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import os
import gearman
import math
class MyGearmanWorker(gearman.GearmanWorker):
def on_job_execute(self, current_job):
print "Job started"
return super(MyGearmanWorker, self).on_job_execute(current_job)
def task_callback(gearman_worker, gearman_job):
print gearman_job.data
return gearman_job.data
my_worker = MyGearmanWorker(['192.168.0.75:4730'])
my_worker.register_task("echo", task_callback)
my_worker.work()++++++++++++++++++++++++++++++++++++++++++++
python client代码：
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from gearman import GearmanClient
gearman_client = GearmanClient(['192.168.0.75:4730'])
gearman_request = gearman_client.submit_job('echo', 'foo')
result_data = gearman_request.result
print result_data 
