Nearby-backend

Geospatial based photo shared social network backend with Golang
Frontend is implementated with ReactJS, please see here.

Overview of project

Develop Web services with Golang to handle user auth(register, login, logout), post and search
Implement token based authentication with PostgreSQL, JWT, OAuth 2.0
Implement posts storage, geo-location based search for nearby posts, data visualization with ElasticSearch and Kibana in GKE(Google Kubernetes Engine)
Store post image with Google Cloud Storage(GCS)
Improve read performance with a little data consistency sacrifice with Redis
Deploy with Docker, GKE(Google Kubernetes Engine) and GOOGLE CLOUD LOAD BALANCING

/signup
- save to PostgreSQL.
/login
- check login credential in PostgreSQL, if correct return token
/search - search nearby posts
1. have token-based authentication first
2. search in Redis cache, if not found then search ElasticSearch
3. use "type" : "geo_point" to map (lat, lon) to geo_point, ElasticSearch will use geo-indexing to search(KD tree)
e.g.
```
/search?lat=10.0&lon=20.0
/search?lat=10.0&lon=20.0&range=10
```
/post
1. save post image in GCS.
2. save post info in ElasticSearch, bigTable(optional).
post body
```
{
  "message": "<3",
  "location": {
    "lat": 47.651977307189256,
    "lon": -122.3316657342046
  },
  "url": [
    "https://www.googleapis.com/download/storage/v1/b/nearby-posts/o/d46f6e06-669b-41ec-9bb4-25a6e08c259f0?generation=1548962551529115&alt=media"
  ]
}
```
Nearby-frontend

Geospatial based photo shared social network frontend with Javascript, ReactJS, Ant Design
Backend is implementated with Golang, please see here

Overview of project
- Develope the Ajax based frontend with Yarn, ReactJS, Ant Design
- Implement list view with react-grid-gallery and map view with react-google-maps for nearby posts
- Implement create new post with message and single or bulk uploaded images with Antd Modal, Button, Form, Input, Upload, Icon, message
Video Demo

Video Demo

TODO
- CRUD for user's own posts
- Follow and Like
- Refactor with Typescript