Learn about a common geocoding technical called Geo Hashing which will allow you to find points of interests (POI) around your user’s location very efficiently. This will let you build proximity apps such as Uber, Lyft, Yelp, and many more.
Use this interactive map for visualization: [https://www.movable-type.co.uk/scripts/geohash.html](https://www.movable-type.co.uk/scripts/geohash.html)
System Design Playlist: https://youtube.com/playlist?list=PL8hP5HjAnJ3_mT7IHXjlbpYX_xiz4v_kP
More References from the video:
[https://www.pubnub.com/learn/glossary/what-is-geohashing/](https://www.pubnub.com/learn/glossary/what-is-geohashing/)
[https://medium.com/@bkawk/geohashing-20b282fc9655](https://medium.com/@bkawk/geohashing-20b282fc9655)
00:00 Why Use Geohashing?
00:32 What is Geohashing?
00:50 Visualization
03:45 Greater Precision
05:25 San Francisco Map Example
08:10 How to find POIs using Geohash
12:30 Map Prefix Length Match to Distance
15:45 Optimize the number of POIs
16:25 Future Videos using Geohash
17:05 Geohash Visualization Tool
17:50 Feedback Please!
#systemDesign #geohashing #location
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