geohash的运用 附近地址搜索

geohash的应用 附近地址搜索
http://en.wikipedia.org/wiki/Geohash

简单使用 geohash， redis，bottle, python-geohash 来实现 restful api的地理位置附近人搜素

from bottle import Bottle, runimport timeimport jsonfrom redis_pool import Redis                                                   R = Redis().connection_pool() import geohashapp = Bottle()@app.route('/v1/mark/<longitude:float>/<latitude:float>')def mark_police(longitude, latitude):    geo_encode = geohash.encode(longitude, latitude, 12)    R.set(geo_encode, time.time())    return json.dumps({"code":"success", "msg":{"geohash":geo_encode}})@app.route('/v1/show/<longitude:float>/<latitude:float>')def show(longitude, latitude):    geo_encode = geohash.encode(longitude, latitude, 7)    eight = geohash.expand(geo_encode)    response = []    for e in eight:        response.extend([geohash.decode(i) for i in R.keys("%s*"%e)])    return json.dumps({"code":"success", "msg":response})run(server='eventlet', app=app, host='0.0.0.0', port=9090)

依赖的redis封装class

import redisclass Redis(object):    pool=None    R = None    def __init__(self, host='localhost', port=6379, max_connections=2048):        self.host=host        self.port=port        self.max_connections=int(max_connections)        self.pool = redis.ConnectionPool(host=host,                 port=port, db=0,                 max_connections=max_connections)        def connection_pool(self):        if not self.R:            self.R = redis.Redis(connection_pool=self.pool)        return self.R

API 接口使用example

1. 标记 user 位置
http://localhost:9090/v1/mark/longitude/latitude

example: http://localhost:9090/v1/mark/12.1256/22.22

            

 {"msg": {"geohash": "s6pucxkhex8v"}, "code": "success"}

2. 用户请求周围1km内的 其他 user 位置信息
http://localhost:9090/v1/show/longitude/latitude

example: http://localhost:9090/v1/show/12.1256/22.22
              
             

 {"msg": [[12.123455917462707, 22.220000009983778], [12.125600008293986, 22.220000009983778]], "code": "success"}

注：
   longitude 经度
   latitude   纬度
   均为float 型

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