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https://github.com/melihmucuk/geocache

Geocache is an in-memory cache that is suitable for geolocation based applications.
https://github.com/melihmucuk/geocache

cache geocaches geofence geolocation geolocation-cache golang

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Geocache is an in-memory cache that is suitable for geolocation based applications.

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# geocache [![GoDoc](https://godoc.org/github.com/melihmucuk/geocache?status.svg)](https://godoc.org/github.com/melihmucuk/geocache) [![Go Report Card](https://goreportcard.com/badge/melihmucuk/geocache)](https://goreportcard.com/report/melihmucuk/geocache) [![Build Status](http://img.shields.io/travis/melihmucuk/geocache.svg?style=flat)](https://travis-ci.org/melihmucuk/geocache)



geocache is an in-memory cache that is suitable for geolocation based applications. It uses geolocation as a key for storing items. You can specify range on initialization and thats it! You can store any object, it uses interface.



### Installation



`go get github.com/melihmucuk/geocache`



### Usage



![geolocation cache](http://i.imgur.com/O6UzVEW.png "Geolocation Cache")



```go



import (

	"fmt"

	"time"



	"github.com/melihmucuk/geocache"

)



func main() {

	c, err := geocache.NewCache(5*time.Minute, 30*time.Second, geocache.WithIn1KM)

	geoPoint := geocache.GeoPoint{Latitude: 40.9887, Longitude: 28.7817}

	if err != nil {

		fmt.Println("Error: ", err.Error())

	} else {

		c.Set(geoPoint, "helloooo", 2*time.Minute)

		v1, ok1 := c.Get(geocache.GeoPoint{Latitude: 41.2, Longitude: 29.3})

		v2, ok2 := c.Get(geocache.GeoPoint{Latitude: 41.2142, Longitude: 29.4234})

		v3, ok3 := c.Get(geocache.GeoPoint{Latitude: 40.9858, Longitude: 28.7852})

		v4, ok4 := c.Get(geocache.GeoPoint{Latitude: 40.9827, Longitude: 28.7883})

		fmt.Println(v1, ok1)

		fmt.Println(v2, ok2)

		fmt.Println(v3, ok3)

		fmt.Println(v4, ok4)

	}

}



```



outputs:

```

, false

, false

helloooo, true

helloooo, true

```



### Information



You can specify 8 different range. More info can be found [here](http://gis.stackexchange.com/questions/8650/how-to-measure-the-accuracy-of-latitude-and-longitude).



* `WithIn11KM`



The first decimal place is worth up to 11.1 km `eg: 41.3, 29.6`



* `WithIn1KM`



The second decimal place is worth up to 1.1 km `eg: 41.36, 29.63`



* `WithIn110M`



The third decimal place is worth up to 110 m `eg: 41.367, 29.631`



* `WithIn11M`



The fourth decimal place is worth up to 11 m `eg: 41.3674, 29.6316`



* `WithIn1M`



The fifth decimal place is worth up to 1.1 m `eg: 41.36742, 29.63168`



* `WithIn11CM`



The sixth decimal place is worth up to 0.11 m `eg: 41.367421, 29.631689`



* `WithIn11MM`



The seventh decimal place is worth up to 11 mm `eg: 41.3674211, 29.6316893`



* `WithIn1MM`



The eighth decimal place is worth up to 1.1 mm `eg: 41.36742115, 29.63168932`