我有一个巨大的数据集，每隔几分钟就会增加数百/数千件商品。我将解析这些数据，我正在寻找有关如何有效地将新传入的项目与想要该项目的用户匹配的建议。
其他人如何做到这一点的例子对我来说意味着世界。即使只是澄清在线搜索什么也会有所帮助。我很难向搜索引擎提出正确的问题，所以我可以学习如何解决这个问题（通常我非常擅长这类事情）。
谢谢各位天才！P.S。希望用nodejs解决这个问题
广告资源数据集示例：
{
"anchor": 982179125,
"next_page": 1,
"next_tier": 0,
"num_matches": 47037,
"postings": [
{
"category": "SBIK",
"category_group": "SSSS",
"external_id": "4488716340",
"heading": "60cm Aluminum/Carbon Road Bike, Ultegra/105 equipped, 20-Spd",
"location": {
"accuracy": 8,
"city": "USA-SFO-SNF",
"country": "USA",
"county": "USA-CA-SAF",
"geolocation_status": 3,
"lat": "37.801041",
"locality": "USA-SFO-MRS",
"long": "-122.434151",
"metro": "USA-SFO",
"region": "USA-SFO-SAF",
"state": "USA-CA",
"zipcode": "USA-94123"
},
"price": 800.0
},
{
"category": "SBOT",
"category_group": "SSSS",
"external_id": "4488164318",
"heading": "Burley Bee Boat Trailer",
"location": {
"accuracy": 8,
"city": "USA-SFO-SNF",
"country": "USA",
"county": "USA-CA-SAF",
"geolocation_status": 3,
"lat": "37.7999",
"locality": "USA-SFO-MRS",
"long": "-122.4342",
"metro": "USA-SFO",
"region": "USA-SFO-SAF",
"state": "USA-CA",
"zipcode": "USA-94123"
},
"price": 150.0
},
{
"category": "SAUT",
"category_group": "SSSS",
"external_id": "4459983854",
"heading": "Car frame extra light castom made",
"location": {
"accuracy": 8,
"city": "USA-SFO-SNF",
"country": "USA",
"county": "USA-CA-SAF",
"geolocation_status": 3,
"lat": "37.7999",
"locality": "USA-SFO-MRS",
"long": "-122.4342",
"metro": "USA-SFO",
"region": "USA-SFO-SAF",
"state": "USA-CA",
"zipcode": "USA-94123"
},
"price": 300.0
},
"success": true,
"time_fetch": 9.4971656799316406,
"time_search": 42.315006256103516,
"time_taken": 183.84885787963867
}
我的用户正在寻找：
{name:"tom",wants:"new car"}
{name:"john",wants:"Road Bike",price:[low:100,high:1000]}
{name:"becky",wants:"dolls"}
{name:"sam",wants:"Drobo",price:[low:0,high:500]}]
...
...
...