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Open-JLBS

A LBS application realized by pure java 基于位置的服务(Location Based Service,LBS),它是通过电信移动联通等运营商的无线电通讯网络(如GSM网、CDMA网)或外部定位方式(如GPS)获取移动终端用户的位置信息(地理坐标,或大地坐标),在GIS(Geographic Information System,地理信息系统)平台的支持下,为用户提供相应服务的一种增值业务。

当前移动设备上网已是大势所趋,通过GIS,WIFI热点等定位作为移动设备的一个基础功能,LBS必然是大量手机app所必备的基础应用。 Open-JLBS是一个纯Java开发的LBS基础系统。它实现了LBS的基本功能,包括但不限于:
1.定位数据的存储,删除及查找(CRUD)
2.用户签到checkin
3.用户UGC地理位置POI数据生成
4.根据指定范围查找附近用户及POI
5.定位最后一次签到lastcheckin数据

为适应高并发及高可用性,本系统使用了ActiveMQ及Memcached进行读写及缓存操作,关于相关的开源软件,请参考以下url:
http://activemq.apache.org/
http://code.google.com/p/spymemcached

本系统特点:
1.可以方便的以spring SOA服务的方式发布
2.基于Spring3.x的高可用性系统
3.多数据库支持,目前打算实现MySQL,mongodb等
4.查找附近使用多种算法实现
5.高并发下可选同步或者异步操作

本系统下一步打算实现的功能:
1.完成多数据库支持
2.附近群组功能引入
3.定位例程提供
4.查找附近使用空间地理位置等多种算法实现
5.加权排序算法

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